92 research outputs found
Migrant Students’ Social Integration Data
No full textOur study aimed to investigate how group permeability and parental involvement affect the relationship between perceived personal discrimination and social integration. A total of 755 migrant students at three schools in mainland China were included in the study. The results indicated that perceived personal discrimination negatively predicted group permeability, whereas group permeability had a positive effect on social integration. Group permeability partially mediated the relationship between perceived personal discrimination and social integration. In addition, parental involvement played a significant moderating role between perceived personal discrimination and group permeability and mitigated the negative effect of perceived personal discrimination on group permeability. These findings suggest that we could reduce migrant students’ perceived personal discrimination by improving their group permeability and parental involvement, thereby increasing their social integration
Development of in-transit ripening technology for delivering ready-to-eat pears
No full textNon-availability of year-around fully-ripened ready-to-eat pears at retail level has become one of major factors that limit fresh pear consumption in U.S. market in recent years. The objective of this project is to test the feasibility of developing a ripening technology that can have pear fully-ripened when they are delivered to distribution center. Ripening is triggered by ethylene encapsulated in α-cyclodextrin, packaged in sachet and control released by moisture from respiration of pears, under refrigeration temperature during transportation. The objective is composed of three sub-objectives: (1) Ethylene encapsulation in α-cyclodextrin. (2) Release study of sachet (PVA film and Tyvek® paper) packaged encapsulated complex with RH as trigger (70%, 80% and 90%). (3) Biological evaluation of efficacy of ethylene released from sachet system. Ethylene encapsulation was controlled by encapsulation duration time and headspace ethylene concentration. Under 1×106 ppm headspace concentration, ethylene was encapsulated in α-cyclodextrin with 2.1% inclusion ratio within 20hrs. Headspace ethylene concentration and duration time did not change inclusion ratio of encapsulated complex, remaining around 2.1%. However, higher headspace ethylene concentration and longer duration time would increase yield of encapsulated complex. PVA film and Tyvek® paper were used as sachet materials to control release ethylene from encapsulated complex at 4℃ with RH as trigger. Release of ethylene from Tyvek® sachet system was faster than from PVA sachet system. Under 90% RH, it took around 72hrs to completely release ethylene from PVA sachet system and 48hrs to reach complete release from Tyvek® sachet system. Unripened pears were used to evaluate biological efficacy of ethylene released from encapsulated complex packaged in Tyvek® sachet. After 10 days of ethylene treatment from sachet system along with stored at 4℃, firmness of pears decreased to 4.2 lbf, within the range of firmness of pears with good eating quality, from 18 lbf. While the firmness of those pears without ethylene treatment had only decreased to 10.3 lbf, which were still unripened. In conclusion, it is technically feasible to develop an in-transit ripening technology to provide ready-to-eat pears when they arrive at the distribution center. RH from the respiration of pears was able to trigger the release of ethylene to induce their ripening along with low temperature during transportation.M.A.Includes bibliographical referencesby Chenyi X
Angiotensin II induces soluble fms-Like tyrosine kinase-1 release via calcineurin signaling pathway in pregnancy
No full textMaternal endothelial dysfunction in preeclampsia is associated with increased soluble fms-like tyrosine kinase-1 (sFlt-1), a circulating antagonist of vascular endothelial growth factor and placental growth factor. Angiotensin II (Ang II) is a potent vasoconstrictor that increases concomitant with sFlt-1 during pregnancy. Therefore, we speculated that Ang II may promote the expression of sFlt-1 in pregnancy. Here we report that infusion of Ang II significantly increases circulating levels of sFlt-1 in pregnant mice, thereby demonstrating that Ang II is a regulator of sFlt-1 secretion in vivo. Furthermore, Ang II stimulated sFlt-1 production in a dose- and time-dependent manner from human villous explants and cultured trophoblasts but not from endothelial cells, suggesting that trophoblasts are the primary source of sFlt-1 during pregnancy. As expected, Ang II-induced sFlt-1 secretion resulted in the inhibition of endothelial cell migration and in vitro tube formation. In vitro and in vivo studies with losartan, small interfering RNA specific for calcineurin and FK506 demonstrated that Ang II-mediated sFlt-1 release was via Ang II type 1 receptor activation and calcineurin signaling, respectively. These findings reveal a previously unrecognized regulatory role for Ang II on sFlt-1 expression in murine and human pregnancy and suggest that elevated sFlt-1 levels in preeclampsia may be caused by a dysregulation of the local renin/angiotensin system
Analysis and Discussion on Subway Construction Accidents from Geological Perspective
No full textSeveral cave-in accidents often occur in subway construction, causing personnel and economic losses. This paper has carried on the statistics and analysis of some typical subway construction accidents in recent years. Taking the collapse accident of a subway station in Hangzhou as the engineering background, the causes of the collapse of the foundation pit were analyzed. The analysis found that groundwater, earthwork over-excavation, weak support design and inadequate monitoring are the main reasons. These factors should be highlighted in the construction of similar projects in the future to avoid similar tragedies
CO 2 emission characteristics and reduction responsibility of industrial subsectors in China
No full textAbstract(#br)Industrial subsectors have an important role in reducing China’s carbon dioxide (CO 2 ) emissions. The present study analyzes the CO 2 emission characteristics of selected subsectors. Results show that the electric and heat power sector is the major industrial CO 2 emitter, and CO 2 emissions of most sectors present huge inter-provincial and inter-regional differences. Then, the CO 2 emission reduction responsibility of provincial-level industrial subsectors is confirmed by the decoupling model. Results show that the development of a low-carbon economy in the nonmetal sector is ideal, and the economic growth in Shanxi and Guizhou is moving toward a low-carbon and energy-saving mode. Moreover, the subsectors that each province should focus on are identified. Finally, constructive suggestions for policymakers to promote low-carbon economy and sustainable development are provided
Acute Phase Blood Glucose Levels and Functional Outcomes in Patients with Spontaneous Intracerebral Hemorrhage
No full textYing Zhou,1 Zhixian Luo,1 Mengying Yu,1 Chenyi Zhan,1 Haoli Xu,1 Ru Lin,1 Shuying Bian,1 Yunjun Yang,2,3 Zhenghao Jiang,4 Xinyi Tao,4 Zusen Ye,5 Meihao Wang,1 Dongqin Zhu2 1Department of Radiology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, People’s Republic of China; 2Department of Nuclear, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, People’s Republic of China; 3Key Laboratory of Novel Nuclide Technologies on Precision Diagnosis and Treatment & Clinical Transformation of Wenzhou, Wenzhou, People’s Republic of China; 4The First School of Medicine, Wenzhou Medical University, Wenzhou, People’s Republic of China; 5Department of Neurology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, People’s Republic of ChinaCorrespondence: Dongqin Zhu, Department of Nuclear, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, People’s Republic of China, Tel +86 0577 55579667, Email [email protected]: Post-stroke hyperglycemia as a common phenomenon is associated with unfavorable outcomes. Focusing on admission hyperglycemia, other markers of dysglycemia were overlooked. This study aimed to explore the contribution of acute phase blood glucose levels in combination with other radiological signs to the prognostication of functional outcomes in patients with spontaneous intracerebral hemorrhage (sICH).Methods: Consecutive patients with sICH with at least five random plasma glucose measurements and complete radiological data during hospitalization were included. We calculated the average, maximum, minimum, standard deviation, and coefficient of variation of blood glucose levels for each patient. Radiological data, including island, black hole, blend, and satellite signs were collected. Functional outcomes were evaluated using the Barthel index. Unfavorable outcomes were defined as a Barthel index score ≤ 60. Univariate and multivariate analyses were performed to identify independent predictors of unfavorable outcomes.Results: Two hundred and thirty-eight patients (mean age 58.5, 163 men and 75 women) were included, and 71 had a history of diabetes. Unfavorable outcomes occurred in 107 patients (45.0%) at 3 months. Multivariate logistic regression analysis demonstrated that maximum blood glucose levels (odds ratio, 1.256; 95% confidence interval, 1.124‒1.404; p < 0.001) and island sign (odds ratio, 2.701; 95% confidence interval, 1.322‒5.521; p = 0.006) were independent predictors of unfavorable outcomes in the nondiabetic group. Meanwhile, patients without diabetes who experienced hematoma expansion had higher average (p = 0.036) and maximum blood glucose levels (p = 0.014).Interpretation: Maximum blood glucose levels and island sign were independently associated with unfavorable outcomes in patients without diabetes, whereas no glycemic variability indices were associated with unfavorable outcomes. Glucose levels influenced hematoma expansion and functional outcomes, particularly in patients without diabetes with sICH. Thus, clinical management of blood glucose levels should be strengthened for patients with sICH with or without a history of diabetes.Keywords: spontaneous intracerebral hemorrhage, glycemic variability, functional outcomes, island sign, diabete
CO2 emission characteristics and reduction responsibility of industrial subsectors in China.
No full textIndustrial subsectors have an important role in reducing China’s carbon dioxide (CO2) emissions. The present study analyzes the CO2 emission characteristics of selected subsectors. Results show that the electric and heat power sector is the major industrial CO2 emitter, and CO2 emissions of most sectors present huge inter-provincial and inter-regional differences. Then, the CO2 emission reduction responsibility of provincial-level industrial subsectors is confirmed by the decoupling model. Results show that the development of a low-carbon economy in the nonmetal sector is ideal, and the economic growth in Shanxi and Guizhou is moving toward a low-carbon and energy-saving mode. Moreover, the subsectors that each province should focus on are identified. Finally, constructive suggestions for policymakers to promote low-carbon economy and sustainable development are provided
Thermal Comfort during Summer in a High-speed Railway Station in Cold Region of China
No full textAbstractThis study explores the interaction between perceived and calculated thermal comfort in high-speed railway station in Cold Region of China. To achieve this, a questionnaire survey in two typical high-speed railway stations in Cold Region of China was conducted in conjunction with physical measurements. The study results reveal that there is a relatively large difference between perceived thermal sensations and calculated predicted mean vote (PMV) from the measurements for the majority of the waiting hall of high-speed railway station. This finding implies that the calculation of PMV is not suitable for the situation in air conditioned waiting hall of high-speed railway stations. The results also show that the length of time a respondent staying in the waiting hall also have effect on the rule of the thermal comfort
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