Integrating and sharing data from different data sources is one of the trends to make better use of data. However, data integration hampers data confidentiality where each data source has its own access control policy...Integrating and sharing data from different data sources is one of the trends to make better use of data. However, data integration hampers data confidentiality where each data source has its own access control policy. This paper includes a discussion on the issue about access control across multiple data sources when they arc combined together in the scenario of searching over these data. A method based on multilevel security for data integration is proposed. The proposed method allows the merging of policies and also tackles the issue of policy conflicts between different data sources.展开更多
The integration of rural information resources is a key factor restricting rural informationization and effective operation of rural information services. To solve problems of separate rural information resources and ...The integration of rural information resources is a key factor restricting rural informationization and effective operation of rural information services. To solve problems of separate rural information resources and departments acting willfully regardless of overall interest,this paper analyzed characteristics and distribution of rural information resources,built a basic framework for integration of rural information resources and a mathematic model of integration,and finally came up with specific solutions to integration of rural information resources.展开更多
采用开顶式气室(open top chambers,OTCs)装置,研究O3浓度升高(E-O3,约150μL.L-1)对常绿阔叶树种全缘冬青幼苗的影响,主要包括伤害症状、植株生长、光合色素含量、气体交换速率与叶绿素荧光、丙二醛含量以及主要抗氧化剂含量变化.经过...采用开顶式气室(open top chambers,OTCs)装置,研究O3浓度升高(E-O3,约150μL.L-1)对常绿阔叶树种全缘冬青幼苗的影响,主要包括伤害症状、植株生长、光合色素含量、气体交换速率与叶绿素荧光、丙二醛含量以及主要抗氧化剂含量变化.经过高浓度O3处理一个生长季后,当年生全展叶片表面分布着大量的黑褐色斑点与斑块,呈腐蚀状凹陷于叶片表面.O3引起茎百分比显著降低7%,但对株高与基径生长、生物量累积与比叶重无显著性影响;与CF处理相比,O3处理下全缘冬青幼苗当年生全展叶片净光合速率、叶绿素a/b值与总酚含量分别显著降低19%、9%与36%.气孔导度、胞间CO2浓度、叶绿素荧光参数、光合色素含量、叶片丙二醛含量、总还原能力以及抗坏血酸含量的变化均不显著.结果表明,O3对全缘冬青幼苗的光合作用具有一定的抑制作用,叶绿素含量组成发生变化是引起净光合速率下降的主要原因;O3对植株总的抗氧化能力未产生明显影响,尚未引起膜脂过氧化程度加剧;虽然全缘冬青幼苗叶片呈现伤害症状,但植株生长指标未受到O3的显著影响.展开更多
A new discrete isospectral problem is introduced,from which a hierarchy of Lax i ntegrable lattice equation is deduced. By using the trace identity,the correspon ding Hamiltonian structure is given and its Liouville i...A new discrete isospectral problem is introduced,from which a hierarchy of Lax i ntegrable lattice equation is deduced. By using the trace identity,the correspon ding Hamiltonian structure is given and its Liouville integrability is proved.展开更多
Background: Kalanchoe integra is widely used in folklore medicine as an antiasthmatic agent. Previous studies have shown the ameliorating effect of Kalanchoe integra leaf extract [KILE] on bronchial hyperesponsiveness...Background: Kalanchoe integra is widely used in folklore medicine as an antiasthmatic agent. Previous studies have shown the ameliorating effect of Kalanchoe integra leaf extract [KILE] on bronchial hyperesponsiveness and inflammation. Further, the stabilizing effect of Kalanchoe sp on mast cell degranulation, suggests that Kalanchoe species are suitable candidates for allergic asthma therapy. This study is designed to investigate the anti-asthmatic potential of KILE and monitor the accompanying histopathological and immunobiochemical changes that occur in an animal model of bronchial asthma using ovalbumin sensitized guinea pigs. Method: Thirty male guinea pigs were divided into five groups of six animals each. Bronchial asthma was simulated in guinea pigs using ovalbumin. Both low dose (300 mg/kg) and high dose extract (900 mg/kg) were administered daily for 42 days. Prednisolone (2.5 mg/kg) was the standard drug used. Results: Guinea pigs in all KILE treated groups maintained the integrity of their airway structures: bronchial folds and walls, alveoli, alveolar ducts and sacs. KILE and prednisolone caused a reduction in immune parameters (p 0.001), extent of bronchoconstriction, bronchial wall thickness and goblet cell accumulation in the sensitized guinea pigs. Conclusion: This study demonstrates the anti-asthmatic potential of KILE during prolonged administration by the oral route.展开更多
Determining the responses of candidate plants to salt stress is a prerequisite for selecting and breeding suitable plants with high salt tolerance to grow in coastal mudfl at areas with high salinity.Here,2-year cutti...Determining the responses of candidate plants to salt stress is a prerequisite for selecting and breeding suitable plants with high salt tolerance to grow in coastal mudfl at areas with high salinity.Here,2-year cutting seedlings of Ilex purpurea Hassk.(local species)and I.integra Thunb.(introduced species)were grown in pots in a glasshouse and irrigated with a Hoagland-NaCl solution at 0,24,and 48 h.Root samples were collected at 0,1,6,24,and 72 h,and concentration of Na^(+)ion;content of proline,soluble carbohydrate,malondialdehyde(MDA),H_(2)O_(2) and ascorbate;and activity of three key antioxidative enzymes were measured.Roots of I.integra accumulated relatively less Na^(+)and had less membrane lipid peroxidation and H_(2)O_(2) during salt stress,thus indicating a relatively higher salt tolerance than roots of I.purpurea.Values for ascorbate content and antioxidant enzymatic activity suggest that the antioxidant ascorbate and antioxidative catalase may play substantial roles for scavenging reactive oxygen species in I.integra roots during salt treatment.Thus,I.integra is apparently more suitable for growing in local highly saline coastal mudfl ats.展开更多
<strong>Objective:</strong> The study aimed to evaluate the performance of the three glucometers compared to standard the laboratory method (Cobas Integra 400 Plus) in measuring blood glucose levels. <s...<strong>Objective:</strong> The study aimed to evaluate the performance of the three glucometers compared to standard the laboratory method (Cobas Integra 400 Plus) in measuring blood glucose levels. <strong>Patients and Methods: </strong>A total of 100 Yemeni diabetic patients were randomly recruited into a comparative cross-sectional study. Venous and finger-pricked blood samples were obtained from all participants and used for blood glucose levels measurement following the standard procedures. <strong>Results:</strong> The mean blood glucose levels for one-hundred diabetic patients using the Gluco Contour TS and Gluco SD Codefree were not significantly different compared with the Cobas Integra 400 Plus (12.14 ± 6.89 mmol/L vs. 12.85 ± 8.83 mmol/L, <span style="white-space:normal;"><i></span>P<span style="white-space:normal;"></i></span> = 0.159;12.50 ± 7.18 mmol/L vs. 12.85 ± 8.83 mmol/L, <i>P</i> = 0.490), respectively. However, there is a significant difference using the Gluco Alert device from that of the Cobas Integra 400 Plus (11.83 ± 6.94 mmol/L vs. 12.85 ± 8.83 mmol/L, <span style="white-space:normal;"><i></span>P<span style="white-space:normal;"></i></span> = 0.046). Furthermore, using the ROC curve at a 95% confidence interval, the Cobas Integra 400 Plus showed a significant agreement with the Gluco Contour TS (51.4%), Gluco SD Codefree (50.4%), and Gluco Alert (39.3%), respectively. For determining accuracy, the sensitivity of the glucometer devices was the following: Gluco SD Codefree (87.3%), Contour TS (85.9%), and Gluco Alert (78.9%). In this regard, the highest specificity was related to Gluco Contour TS (65.5%). <strong>Conclusion:</strong> The correlation between both methods was good, with high sensitivity and specificity in measuring blood glucose levels as indicated by the ROC curve. Thus, we suggest using these glucometers at homes and hospitals as a point of care for diabetic patients.展开更多
基金Supported by the China MOE-China Mobile Research Fund(MCM20121051,MCM20130651)China MOE Doctoral Research Fund(20134407120017)+2 种基金Natural Science Foundation of Guangdong Province(S2012030006242)Guangdong Industry Development Fund(S2014-007)Guangzhou Industry Cooperation Fund(2014Y2-00004,2014Y2-00006)
文摘Integrating and sharing data from different data sources is one of the trends to make better use of data. However, data integration hampers data confidentiality where each data source has its own access control policy. This paper includes a discussion on the issue about access control across multiple data sources when they arc combined together in the scenario of searching over these data. A method based on multilevel security for data integration is proposed. The proposed method allows the merging of policies and also tackles the issue of policy conflicts between different data sources.
基金Supported by Soft Science Project of Ministry of Science and Technology(2011GXS1D003)Soft Science Project of Chongqing Municipality(cstc2011cx-rkxB00008)
文摘The integration of rural information resources is a key factor restricting rural informationization and effective operation of rural information services. To solve problems of separate rural information resources and departments acting willfully regardless of overall interest,this paper analyzed characteristics and distribution of rural information resources,built a basic framework for integration of rural information resources and a mathematic model of integration,and finally came up with specific solutions to integration of rural information resources.
文摘采用开顶式气室(open top chambers,OTCs)装置,研究O3浓度升高(E-O3,约150μL.L-1)对常绿阔叶树种全缘冬青幼苗的影响,主要包括伤害症状、植株生长、光合色素含量、气体交换速率与叶绿素荧光、丙二醛含量以及主要抗氧化剂含量变化.经过高浓度O3处理一个生长季后,当年生全展叶片表面分布着大量的黑褐色斑点与斑块,呈腐蚀状凹陷于叶片表面.O3引起茎百分比显著降低7%,但对株高与基径生长、生物量累积与比叶重无显著性影响;与CF处理相比,O3处理下全缘冬青幼苗当年生全展叶片净光合速率、叶绿素a/b值与总酚含量分别显著降低19%、9%与36%.气孔导度、胞间CO2浓度、叶绿素荧光参数、光合色素含量、叶片丙二醛含量、总还原能力以及抗坏血酸含量的变化均不显著.结果表明,O3对全缘冬青幼苗的光合作用具有一定的抑制作用,叶绿素含量组成发生变化是引起净光合速率下降的主要原因;O3对植株总的抗氧化能力未产生明显影响,尚未引起膜脂过氧化程度加剧;虽然全缘冬青幼苗叶片呈现伤害症状,但植株生长指标未受到O3的显著影响.
文摘A new discrete isospectral problem is introduced,from which a hierarchy of Lax i ntegrable lattice equation is deduced. By using the trace identity,the correspon ding Hamiltonian structure is given and its Liouville integrability is proved.
文摘Background: Kalanchoe integra is widely used in folklore medicine as an antiasthmatic agent. Previous studies have shown the ameliorating effect of Kalanchoe integra leaf extract [KILE] on bronchial hyperesponsiveness and inflammation. Further, the stabilizing effect of Kalanchoe sp on mast cell degranulation, suggests that Kalanchoe species are suitable candidates for allergic asthma therapy. This study is designed to investigate the anti-asthmatic potential of KILE and monitor the accompanying histopathological and immunobiochemical changes that occur in an animal model of bronchial asthma using ovalbumin sensitized guinea pigs. Method: Thirty male guinea pigs were divided into five groups of six animals each. Bronchial asthma was simulated in guinea pigs using ovalbumin. Both low dose (300 mg/kg) and high dose extract (900 mg/kg) were administered daily for 42 days. Prednisolone (2.5 mg/kg) was the standard drug used. Results: Guinea pigs in all KILE treated groups maintained the integrity of their airway structures: bronchial folds and walls, alveoli, alveolar ducts and sacs. KILE and prednisolone caused a reduction in immune parameters (p 0.001), extent of bronchoconstriction, bronchial wall thickness and goblet cell accumulation in the sensitized guinea pigs. Conclusion: This study demonstrates the anti-asthmatic potential of KILE during prolonged administration by the oral route.
基金supported by the Key Research and Development Program of Jiangsu Province(Modern agriculture)(BE2018400)by Innovation Capacity Building Plan(Science and Technology Facilities)-Independent Research Fund for Research Institutes of Public Welfare of Jiangsu Province(BM2018022-6)。
文摘Determining the responses of candidate plants to salt stress is a prerequisite for selecting and breeding suitable plants with high salt tolerance to grow in coastal mudfl at areas with high salinity.Here,2-year cutting seedlings of Ilex purpurea Hassk.(local species)and I.integra Thunb.(introduced species)were grown in pots in a glasshouse and irrigated with a Hoagland-NaCl solution at 0,24,and 48 h.Root samples were collected at 0,1,6,24,and 72 h,and concentration of Na^(+)ion;content of proline,soluble carbohydrate,malondialdehyde(MDA),H_(2)O_(2) and ascorbate;and activity of three key antioxidative enzymes were measured.Roots of I.integra accumulated relatively less Na^(+)and had less membrane lipid peroxidation and H_(2)O_(2) during salt stress,thus indicating a relatively higher salt tolerance than roots of I.purpurea.Values for ascorbate content and antioxidant enzymatic activity suggest that the antioxidant ascorbate and antioxidative catalase may play substantial roles for scavenging reactive oxygen species in I.integra roots during salt treatment.Thus,I.integra is apparently more suitable for growing in local highly saline coastal mudfl ats.
文摘<strong>Objective:</strong> The study aimed to evaluate the performance of the three glucometers compared to standard the laboratory method (Cobas Integra 400 Plus) in measuring blood glucose levels. <strong>Patients and Methods: </strong>A total of 100 Yemeni diabetic patients were randomly recruited into a comparative cross-sectional study. Venous and finger-pricked blood samples were obtained from all participants and used for blood glucose levels measurement following the standard procedures. <strong>Results:</strong> The mean blood glucose levels for one-hundred diabetic patients using the Gluco Contour TS and Gluco SD Codefree were not significantly different compared with the Cobas Integra 400 Plus (12.14 ± 6.89 mmol/L vs. 12.85 ± 8.83 mmol/L, <span style="white-space:normal;"><i></span>P<span style="white-space:normal;"></i></span> = 0.159;12.50 ± 7.18 mmol/L vs. 12.85 ± 8.83 mmol/L, <i>P</i> = 0.490), respectively. However, there is a significant difference using the Gluco Alert device from that of the Cobas Integra 400 Plus (11.83 ± 6.94 mmol/L vs. 12.85 ± 8.83 mmol/L, <span style="white-space:normal;"><i></span>P<span style="white-space:normal;"></i></span> = 0.046). Furthermore, using the ROC curve at a 95% confidence interval, the Cobas Integra 400 Plus showed a significant agreement with the Gluco Contour TS (51.4%), Gluco SD Codefree (50.4%), and Gluco Alert (39.3%), respectively. For determining accuracy, the sensitivity of the glucometer devices was the following: Gluco SD Codefree (87.3%), Contour TS (85.9%), and Gluco Alert (78.9%). In this regard, the highest specificity was related to Gluco Contour TS (65.5%). <strong>Conclusion:</strong> The correlation between both methods was good, with high sensitivity and specificity in measuring blood glucose levels as indicated by the ROC curve. Thus, we suggest using these glucometers at homes and hospitals as a point of care for diabetic patients.
