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Search Results: 1 - 10 of 27927 matches for " NING Ying "
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Micropropagation of Chinese Plum (Prunus salicina Lindl.) Using Mature Stem Segments
Ying-Ning ZOU
Notulae Botanicae Horti Agrobotanici Cluj-Napoca , 2010,
Abstract: An effective in vitro culture system for mature stem segments of Chinese plum (Prunus salicina Lindl. cv. ‘Gulf-ruby’) was established. The nodal segments of 1 cm were cut from young shoots in open field, sterilized and established in vitro. The successfully induced culture was achieved on woody plant medium (WPM) supplemented with 0.05-0.1 mg/l IBA, 0.5-1.0 mg/l BA, 30 g/l glucose, 5 g/l agar and 1.0 g/l Vc. The successful shoot multiplication was achieved on WPM with 0.05-0.1 mg/l IBA, 0.2 mg/l BA, 0.3 mg/l KT and 1.0 g/l casein hydrolysate. Elongation of the shoot in vitro was facilitated on WPM with 0.05 mg/l IBA, 0.3 mg/l KT/BA and 1.0 g/l casein hydrolysate. The shoots from microcuttings were rooted in 1/2 MS (half strength MS) supplemented with 0.2-0.5 mg/l IBA, 15 g/l sucrose and 20-40 mg/l phloroglucinol (PG). Regenerated shoots successfully acclimatized to greenhouse conditions and grew vigorously with no apparent phenotypic aberrations.
A controlled Intervention Study: Comparison of Intervention on the Antibiotic Prophylaxis of Three Clean Surgeries in Chinese Tertiary Hospitals  [PDF]
Yingdong Zheng, Ying Zhou, Ning Chen, Liang Zhou, Qing Yan
Pharmacology & Pharmacy (PP) , 2013, DOI: 10.4236/pp.2013.45066
Abstract: A controlled intervention study was to promote rational antibiotic prophylaxis in clean surgeries in Chinese tertiary hospitals from 2008 to 2009. The effect of the intervention was measured and compared before and after intervention (intervention group, IG, including twelve hospitals), and compared with the control group (CG, including 164 tertiary hospitals distributed in 31 provinces). There were a total of 3961 and 657 cases identified in IG & CG for the study. Comparing the changes of IG with CG following the 3rd intervention, the proportion of antibiotics use without indication decreased from 61.9% (IG) & 84.4% (CG) (χ2 test, P < 0.01) to 60.9% (IG) & 59.1% (CG) (χ2 test, P > 0.05); the rationality scores increased from 55.4 (IG) & 57.6 (CG) (t test, P > 0.05) to 77.0 (IG) & 64.3 (CG) (t test, P < 0.01) respectively. The results showed that the main problems of irrational antibiotic prophylaxis included antibiotic selection, medication given at wrong time, and the long duration of medication, accounting for 28.1%, 34% and 69.6% of the total indicated cases respectively. Significant improvements in using antibiotics with indication would help enhance rational use of the antibiotics. There were complicated factors affecting the antibiotics use decision making beyond the capacity of technical interventions.
Photocleavage Properties and DNA-Binding Studies of Oxovanadium Complexes Incorporating 2-(2-Hydroxybenzylideneamino) Isoindoline-1,3-Dione and Fluoro-Phenanthroline Derivatives  [PDF]
Peng Ying, Pengfei Zeng, Jiazheng Lu, Ning Yang, Hongyuan Chen
Open Journal of Inorganic Chemistry (OJIC) , 2014, DOI: 10.4236/ojic.2014.44007
Abstract: Three mononuclear oxovanadium complexes [VO(Hbid)(CF3PIP)] (1) (Hbid=(E)-2-(2-hydroxybenzylideneamino) isoindoline-1,3-dione, CF3PIP=2-(2-trifluoromethyl phenyl)imidazole[4,5-f][1,10] phenanthroline), [VO(Hbid)(m-CF3PIP)]; (2) (m-CF3PIP=2-(3-trifluoromethyl phenyl)imidazole [4, 5-f][1,10]phenanthroline) and [VO(Hbid)(p-CF3PIP)]; (3) (p-CF3PIP=2-(4-trifluoromethyl phenyl) imidazole[4,5-f][1,10]phenanthroline) have been synthesized and characterized by elemental analysis, IR, molar conductance, ES-MS and 1H NMR. The DNA-binding properties of these complexes were studied by using UV-Vis absorption titration, fluorescence spectra, viscosity measurements and thermal denaturation studies. The results show that 1, 2 and 3 interact with calf thymus DNA (CT-DNA) by intercalation modes and the magnitude of their intrinsic binding constants (Kb values) follows the order: 2 < 1 < 3. Furthermore, their photocleavage properties with pBR322 plasmid DNA were investigated by agarose gel electrophoresis experiments. The DNA cleavage capacity of complex 3 is also stronger than that of 1 and 2.
Neurotoxic Effects in Workers of the Clinical Thermometer Manufatcure Plant
Ning Tang, Ying M. Li
International Journal of Occupational Medicine and Environmental Health , 2006, DOI: 10.2478/v10001-006-0023-8
Abstract: Objectives: Occupational exposure to mercury can induce adverse health effects, and the central nervous system is the major target of its toxic action. This problem especially arises in plants involved in the manufacture of mercury-containing products, where an appropriate protection against mercury exposure is not ensured. The aim of this study was to assess health effects of mercury, especially neurotoxic effects and oral disorders, in workers employed in a clinical thermometer manufacture plant and to determine mercury concentrations in the workplace ambient air. Materials and Methods: The study population comprised 143 workers, including 51 (35.7%) men and 92 (64.3%) women employed in the plant. Mean age in the whole group was 29 years (range, 18-55 years). It was divided into three groups: control, mercury absorption and mercury poisoning. A questionnaire-based interview was used to collect data on medical history, occupational exposure and employment. For clinical diagnosis, all subjects underwent physical, neurological and oral examinations. Mercury concentrations in the air were recorded by Hg monitoring instrument and mercury levels in collected urine samples were determined by cold vapor atomic absorption spectrophotometry. Results: Neurasthenic symptoms were found in 51.75% of the subjects, emotional changes in 27.27%, tremors in 11.19%, and infiammations in 21.68%. The case percentage of neurological symptoms in the control and mercury absorption groups did not show significant difference, but it was significantly higher in the mercury poisoning group. Conclusions: The high occupational exposure to mercury, found in the plant and evidenced by urinary Hg concentration >m 0.05 mg/l, can result in chronic quantitative neurotoxic effects and qualitative health changes. Therefore, constant monitoring of the work environment and checking of workers' health status should be ensured. In addition, appropriate steps should be taken to improve work conditions and promote health among the employees.
Interleukin-1 exerts distinct actions on different cell types of the brain in vitro
Ying An, Qun Chen, Ning Quan
Journal of Inflammation Research , 2011, DOI: http://dx.doi.org/10.2147/JIR.S15357
Abstract: terleukin-1 exerts distinct actions on different cell types of the brain in vitro Short Report (3537) Total Article Views Authors: Ying An, Qun Chen, Ning Quan Published Date January 2011 Volume 2011:4 Pages 11 - 20 DOI: http://dx.doi.org/10.2147/JIR.S15357 Ying An, Qun Chen, Ning Quan Department of Oral Biology, Ohio State University, Columbus, OH, USA Abstract: Interleukin-1 (IL-1) is a critical neuroinflammatory mediator in the central nervous system (CNS). In this study, we investigated the effect of IL-1 on inducing inflammation-related gene expression in three astrocyte, two microglial, and one brain endothelial cell line. Interleukin-1 beta (IL-1β) is found to be produced by the two microglial cell lines constitutively, but these cells do not respond to IL-1β stimulation. The three astrocyte cell lines responded to IL-1 stimulation by expressing MCP-1, CXCL-1, and VCAM-1, but different subtypes of astrocytes exhibited different expression profiles after IL-1β stimulation. The brain endothelial cells showed strongest response to IL-1β by producing MCP-1, CXCL-1, VCAM-1, ICAM-1, IL-6, and COX-2 mRNA. The induction of endothelial COX-2 mRNA is shown to be mediated by p38 MAPK pathway, whereas the induction of other genes is mediated by the NF-κB pathway. These results demonstrate that IL-1 exerts distinct cell type-specific action in CNS cells and suggest that IL-1-mediated neuroinflammation is the result of the summation of multiple responses from different cell types in the CNS to IL-1.
Interleukin-1 exerts distinct actions on different cell types of the brain in vitro
Ying An,Qun Chen,Ning Quan
Journal of Inflammation Research , 2011,
Abstract: Ying An, Qun Chen, Ning QuanDepartment of Oral Biology, Ohio State University, Columbus, OH, USAAbstract: Interleukin-1 (IL-1) is a critical neuroinflammatory mediator in the central nervous system (CNS). In this study, we investigated the effect of IL-1 on inducing inflammation-related gene expression in three astrocyte, two microglial, and one brain endothelial cell line. Interleukin-1 beta (IL-1β) is found to be produced by the two microglial cell lines constitutively, but these cells do not respond to IL-1β stimulation. The three astrocyte cell lines responded to IL-1 stimulation by expressing MCP-1, CXCL-1, and VCAM-1, but different subtypes of astrocytes exhibited different expression profiles after IL-1β stimulation. The brain endothelial cells showed strongest response to IL-1β by producing MCP-1, CXCL-1, VCAM-1, ICAM-1, IL-6, and COX-2 mRNA. The induction of endothelial COX-2 mRNA is shown to be mediated by p38 MAPK pathway, whereas the induction of other genes is mediated by the NF-κB pathway. These results demonstrate that IL-1 exerts distinct cell type-specific action in CNS cells and suggest that IL-1-mediated neuroinflammation is the result of the summation of multiple responses from different cell types in the CNS to IL-1.Keywords: astrocyte, microglia, endothelial cells, signal transduction pathways, gene expression
A new electrical contact alloy with high reliability based on gold
Yuantao Ning,Ying Peng,Hong Dai
Gold Bulletin , 2002, DOI: 10.1007/BF03214842
Abstract: A new gold alloy (NSCGA) was designed and prepared for light duty precision contacts. The microstructure, mechanical, electrical and applied properties of the NSCGA alloy were studied. The NSCGA alloy contains copper, palladium, platinum, nickel and rhodium as well as gold. The unique structure comprised of two phases, a gold-rich solid solution as the matrix and a platinum-rich solid solution as a strengthening phase. The matrix presents short-range ordering in the temperature range 200-900°C, which leads to the specific resistance of the alloy decreasing, and a modulated structure at low temperatures, which is responsible for age strengthening. The NSCGA alloy has low specific resistance, high tensile strength and high Vickers hardness. Various TO-5 type relays (TO-5 relay is a sealed mini relay with magnetic preservation) with NSCGA alloy as contacts were prepared and tested in a special relay factory under industrial conditions. NSCGA alloy contacts showed stable and low contact resistance, long loading life and high reliability, superior to that of an available conventional sixcomponent palladium alloy. The NSCGA alloy and the composites with NSCGA alloy as a covering layer and copper alloys as a base have been evaluated in various TO-5 type mini relays and other electric products.
Novel Test Structures for 2D-Mesh NoC with Evaluation on the Coverage-driven & VMM-based Testbench
Ying Zhang,Ning Wu,Fen Ge
Lecture Notes in Engineering and Computer Science , 2011,
Abstract:
Adaptive Responses of Birch-Leaved Pear (Pyrus betulaefolia) Seedlings to Salinity Stress
Qiang Sheng WU,Ying Ning ZOU
Notulae Botanicae Horti Agrobotanici Cluj-Napoca , 2009,
Abstract: One-year-old birch-leaved pear (Pyrus betulaefolia Bunge) seedlings were subjected to 0, 50, 100, 150, and 200 mmol/L NaCl solutions for 27 days in order to study the effects of salinity stress on photosynthesis, ion accumulation and enzymatic and non-enzymatic scavenging of reactive oxygen species in the seedlings. The research was performed in a greenhouse using potted trees. Salinity stress reduced photosynthetic rates, stomatal conductance and water use efficiency of leaves of the pear seedlings, but increased transpiration rates and leaf temperature. Hydrogen peroxide and superoxide anion radical contents increased with increasing NaCl concentrations, a phenomena also observed for malondialdehyde, suggesting that leaves of the pear seedlings suffered from oxidative injury. Superoxide dismutase (SOD) and catalase (CAT) activities quickly responded by increasing when the pear seedlings were subjected to salinity stress. Total protein content in leaves of the seedlings was restrained by salinity stress, whereas ascorbate content increased. Salinity stress reduced glutathione content once the birch-leaved pear seedlings were exposed to a low level (50 or 100 mmol/L) of NaCl, whereas a high level (150 or 200 mmol/L NaCl) of salinity stress stimulated the accumulation of glutathione. Salinity stress increased the accumulation of Na+, Cl-, K+ and Mg2+ in the seedlings, but reduced Ca2+ levels and the ratio of other ions to Na+ except K+/Na+ under 50 mmol/L NaCl conditions. This suggests that leaves of birch-leaved pear seedlings possess the capacity for salt exclusion only under 50 mmol/L NaCl conditions, and Ca2+ does not play a fundamental role as a secondary messenger under salinity stress conditions.
Life Cycle Assessment-based method of Excessive Commodity Packaging on Energy Conservation and Emissions Reduction  [PDF]
Si-ying Wang, Xi-chun Bao, Ning-ling Wang
Energy and Power Engineering (EPE) , 2013, DOI: 10.4236/epe.2013.54B271
Abstract:

Based on a Life Cycle Assessment model, the effect of the whole life cycle of excessive commodity packaging on the environment was analyzed by eBalance Evaluation LCA software from production through circulation. The cost evaluation system and environment impact model of its three main processes, that is, material production, product machining and waste manufacturing, were established to identify the main environmental impact corresponding indicators and the influence on energy conservation and emissions reduction of excessive packaging life cycle. And packaging of moon-cakes was taken as an example to analyze the difference between the ordinary packaging and excessive packaging of moon-cakes in terms of life cycle assessment and costs analysis. Meanwhile some measures are put forward to conserve energy and reduce emissions.

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