Product storage policy, single picking volume and picking routing are the three factors of vital importance that affect the efficiency of a crane to pick goods in automated storage and retrieval systems(AS/RS). Compar...Product storage policy, single picking volume and picking routing are the three factors of vital importance that affect the efficiency of a crane to pick goods in automated storage and retrieval systems(AS/RS). Comparative experiments on picking efficiency were conducted targeting picking operation with order of 1 to 20. Based on dedicated and random storage policies, 4 picking methods of patching-based, S-type, return-type and optimized-type routes were used and compared in the experiments. The results show that either the dedicated policy or the random policy was applied, crane worked most efficiently with optimizedtype route, followed by S-type path, patching-based path, and return-type path. When the number of orders in a single picking is larger(more than 5), the random storage policy is preferable to the dedicated policy.展开更多
We used whole-vacuolar patch-clamp recording mode to study the action mechanism of La3+ to Slow Vacuolar (SV) channels for the first time. We recorded SV channel currents of Xinlimei (Raphanus satirus L.) vacuolars. T...We used whole-vacuolar patch-clamp recording mode to study the action mechanism of La3+ to Slow Vacuolar (SV) channels for the first time. We recorded SV channel currents of Xinlimei (Raphanus satirus L.) vacuolars. The minimum activation potentials of voltage-dependent SV channels tied in 25+/-5 mV. The increase in cytoplasmic Ca2+ led to enhancement of SV-type currents. It was found that the threshold potential of activation shifted towards more depolarized values whenever cytoplasmic Ca2+ was increased. When 10(-10) mol/L free La3+ was added to the bath, SV-type current was suppressed by 60 similar to 75%. These data showed La3+ reduced ion permeabilities of Xinlimei root vacuolar membrane.展开更多
Objectives Heart failure （HF） is one of the most common outcome for all kinds of heart diseases, the effects of energetic therapy on HF remains controversial, especially to ischemic HF. The aim of this study was to ...Objectives Heart failure （HF） is one of the most common outcome for all kinds of heart diseases, the effects of energetic therapy on HF remains controversial, especially to ischemic HF. The aim of this study was to explore the effect of exogenous phosphocreatine with different concentration on L-type calcium（I Cc-L） current in ischemic ventricular myocytes of guinea pig and to investigate its underlying electrophysiological mechanism for the treatment of ischemic HF. Methods Single ventricular myocytes were isolated enzymatically from left ventricle of guinea pig. Peak I Ca-L current were recorded using patch clamp techniques in the whole-cell configuration when myocytes had been superfused with normal Tyrode solution, simple ischemic solution, ischemic solution containing phosphocreatine with different concentration for 10 minutes respectively. Results Peak I Ca-L current density of myocytes superfused with simple simulated ischemic solution was remarkably inhibited by 80.6 ± 5.2% compared with myocytes superfused with normal Tyrode solution（P〈0.05）. Ischemic solution containing phosphocreatine of 5, 10, 20, 30mmol/L inhibited Peak I Ca-L current density by （53.8±6.7）%, （41.8 ± 8.2）%, （38.1±7.4）%, （36.6±9.7）% respectively. There was no statistical significance among phosphocreation of 10, 20, 30 mmol / L. Conclusions Extrogenous phosphocreatine could reverse the inhibition of I Ca-L current under ischemic condition, which could be the ionic basis for the treatment of ischemic heart failure. 0-10 mmol/L phosphocreatine exerted significant dose-effect relationship which no longer existed as concentration more than 10 mmol/L. It is supposed that phosphocreatine increased I Ca-L current by many pathways rather than simple substrate for ATP synthesis.展开更多
【目的】研究兰州市黄壤土条件下不同滴灌方式对设施黄瓜生长发育及产量的影响。【方法】分别运用滴箭式膜下滴灌、内镶贴片式膜下滴灌、垄膜沟灌及水肥耦合处理方式对设施黄瓜理化性状、产量和品质的影响,采用三因素三水平正交试验,利...【目的】研究兰州市黄壤土条件下不同滴灌方式对设施黄瓜生长发育及产量的影响。【方法】分别运用滴箭式膜下滴灌、内镶贴片式膜下滴灌、垄膜沟灌及水肥耦合处理方式对设施黄瓜理化性状、产量和品质的影响,采用三因素三水平正交试验,利用方差和回归分析得出三因素影响的最优组合方案。【结果】三因素对植株理化性状的影响不大,但对其果实的理化性状、产量、品质和水分利用率极显著,影响顺序为滴灌模式>灌水量>施肥量。三因素最优组合为滴箭式膜下滴灌:灌水量66.13 m 3/hm^(2),施肥量为25.2 kg/hm^(2),日光温室黄瓜的最高产量为256942.52 kg/hm^(2)。【结论】滴箭式膜下滴灌和内镶贴片式膜下滴灌均能在不影响设施黄瓜产量和品质的前提下,节水节肥节本,其中以滴箭式膜下滴灌效果最佳。展开更多
基金Funded by National Social Science Foundation of China(16CGL018)the Soft Science Research Funds for Chengdu Science and Technology Project(2015-RK00-00206-ZF)the National United Engineering Laboratory of Integrated and Intelligent Transportation,Southwest Jiaotong University,China
文摘Product storage policy, single picking volume and picking routing are the three factors of vital importance that affect the efficiency of a crane to pick goods in automated storage and retrieval systems(AS/RS). Comparative experiments on picking efficiency were conducted targeting picking operation with order of 1 to 20. Based on dedicated and random storage policies, 4 picking methods of patching-based, S-type, return-type and optimized-type routes were used and compared in the experiments. The results show that either the dedicated policy or the random policy was applied, crane worked most efficiently with optimizedtype route, followed by S-type path, patching-based path, and return-type path. When the number of orders in a single picking is larger(more than 5), the random storage policy is preferable to the dedicated policy.
基金The authors acknowledge the support of the National Natural Science Foundation of ChinaProvincial Natural Science Foundation of Shanxi.
文摘We used whole-vacuolar patch-clamp recording mode to study the action mechanism of La3+ to Slow Vacuolar (SV) channels for the first time. We recorded SV channel currents of Xinlimei (Raphanus satirus L.) vacuolars. The minimum activation potentials of voltage-dependent SV channels tied in 25+/-5 mV. The increase in cytoplasmic Ca2+ led to enhancement of SV-type currents. It was found that the threshold potential of activation shifted towards more depolarized values whenever cytoplasmic Ca2+ was increased. When 10(-10) mol/L free La3+ was added to the bath, SV-type current was suppressed by 60 similar to 75%. These data showed La3+ reduced ion permeabilities of Xinlimei root vacuolar membrane.
文摘Objectives Heart failure （HF） is one of the most common outcome for all kinds of heart diseases, the effects of energetic therapy on HF remains controversial, especially to ischemic HF. The aim of this study was to explore the effect of exogenous phosphocreatine with different concentration on L-type calcium（I Cc-L） current in ischemic ventricular myocytes of guinea pig and to investigate its underlying electrophysiological mechanism for the treatment of ischemic HF. Methods Single ventricular myocytes were isolated enzymatically from left ventricle of guinea pig. Peak I Ca-L current were recorded using patch clamp techniques in the whole-cell configuration when myocytes had been superfused with normal Tyrode solution, simple ischemic solution, ischemic solution containing phosphocreatine with different concentration for 10 minutes respectively. Results Peak I Ca-L current density of myocytes superfused with simple simulated ischemic solution was remarkably inhibited by 80.6 ± 5.2% compared with myocytes superfused with normal Tyrode solution（P〈0.05）. Ischemic solution containing phosphocreatine of 5, 10, 20, 30mmol/L inhibited Peak I Ca-L current density by （53.8±6.7）%, （41.8 ± 8.2）%, （38.1±7.4）%, （36.6±9.7）% respectively. There was no statistical significance among phosphocreation of 10, 20, 30 mmol / L. Conclusions Extrogenous phosphocreatine could reverse the inhibition of I Ca-L current under ischemic condition, which could be the ionic basis for the treatment of ischemic heart failure. 0-10 mmol/L phosphocreatine exerted significant dose-effect relationship which no longer existed as concentration more than 10 mmol/L. It is supposed that phosphocreatine increased I Ca-L current by many pathways rather than simple substrate for ATP synthesis.
文摘【目的】研究兰州市黄壤土条件下不同滴灌方式对设施黄瓜生长发育及产量的影响。【方法】分别运用滴箭式膜下滴灌、内镶贴片式膜下滴灌、垄膜沟灌及水肥耦合处理方式对设施黄瓜理化性状、产量和品质的影响,采用三因素三水平正交试验,利用方差和回归分析得出三因素影响的最优组合方案。【结果】三因素对植株理化性状的影响不大,但对其果实的理化性状、产量、品质和水分利用率极显著,影响顺序为滴灌模式>灌水量>施肥量。三因素最优组合为滴箭式膜下滴灌:灌水量66.13 m 3/hm^(2),施肥量为25.2 kg/hm^(2),日光温室黄瓜的最高产量为256942.52 kg/hm^(2)。【结论】滴箭式膜下滴灌和内镶贴片式膜下滴灌均能在不影响设施黄瓜产量和品质的前提下,节水节肥节本,其中以滴箭式膜下滴灌效果最佳。
