Objective] This study was performed to investigate the trait changes and their correlations as wel as the dynamic changes of biological yield of Xuzishu 3, which wil help to enhance the yield and anthocyanin content o...Objective] This study was performed to investigate the trait changes and their correlations as wel as the dynamic changes of biological yield of Xuzishu 3, which wil help to enhance the yield and anthocyanin content of sweetpotato by cul-tivation. [Method] We systematical y measured the agronomic traits, qualitative char-acters and biological yield of Xuzishu 3 during six growing periods to investigate the dynamic changes of its essential characters and yield accumulation. [Result] The characters of Xuzishu 3 appeared most prosperous after the 90th d except for an-thocyanin content. Extremely significant positive correlations were found between ev-ery two of the dry matter rates of above-ground parts （including leaf petioles, leaves and stems）, reducing sugar content and potato weight per plant. Assimilated product distributed more in stems and leaves than in storage roots before the 90th d in growing period. Photosynthetic capacity and net assimilation rate gradual y de-creased after the 90th d, but the assimilated product distributing to storage roots in-creased quickly and maximized in the 135th d. [Conclusion] Xuzishu 3 is a late ma-turing variety requiring more fertilizer, and the accumulation of anthocyanin fluctuates during the growth period of Xuzishu 3. So yield of Xuzishu 3 can be increased by applying more fertilizer and extending the growth period reasonably, meanwhile the anthocyanin content can be increased by means of control ing temperature, light, water and phytohormone within 60 d after planting.展开更多
The psychotherapeutic technique plays an important role in acupuncture therapy. In the present paper, the authors explain the relevance of psychotherapeutic technique and curative effect of acupuncture from （1）conne...The psychotherapeutic technique plays an important role in acupuncture therapy. In the present paper, the authors explain the relevance of psychotherapeutic technique and curative effect of acupuncture from （1）connection between psychologic factors and curing disease, （2）specialty of acupuncture therapy, and （3）influence of psychologic factors on acupuncture therapy, etc. Finally bring forward how to make good use of the technique during the course of acupuncture.展开更多
Cloud computing is becoming an important solution for providing scalable computing resources via Internet. Because there are tens of thousands of nodes in data center, the probability of server failures is nontrivial....Cloud computing is becoming an important solution for providing scalable computing resources via Internet. Because there are tens of thousands of nodes in data center, the probability of server failures is nontrivial. Therefore, it is a critical challenge to guarantee the service reliability. Fault-tolerance strategies, such as checkpoint, are commonly employed. Because of the failure of the edge switches, the checkpoint image may become inaccessible. Therefore, current checkpoint-based fault tolerance method cannot achieve the best effect. In this paper, we propose an optimal checkpoint method with edge switch failure-aware. The edge switch failure-aware checkpoint method includes two algorithms. The first algorithm employs the data center topology and communication characteristic for checkpoint image storage server selection. The second algorithm employs the checkpoint image storage characteristic as well as the data center topology to select the recovery server. Simulation experiments are performed to demonstrate the effectiveness of the proposed method.展开更多
Coronary blood flow reserve (CFR) was assessed by transesophageal Doppler echocardiography in normal subjects (group A. n=20),hypertensive non-left ventricular hypertrophy (non-LVH)Patients (group B,n=22). hypertensiv...Coronary blood flow reserve (CFR) was assessed by transesophageal Doppler echocardiography in normal subjects (group A. n=20),hypertensive non-left ventricular hypertrophy (non-LVH)Patients (group B,n=22). hypertensive patients with LVH(group C.n=32)and coronary heart disease patients (group D. n=33) with the volume sample placed at the bifurcation of the left main and left main and left descending coronary artery. Coronary blood flow velocity (CBFV)was evaluated at rest.2 minutes after dipyridamole (0. 56mg/kg. i. v.) . and 2 minutes after aminophylline i.v. The ratio of dipyridamole to rest maximal diastolic velocity (D/R PDV) was considered the index of coronary blood flow reserve.It was found that D/R PDV was significantly less in groups C and D compared with that in groups A and B (D PDC,1.84±0. 57. 1. 57±0. 41 versus 2.59±0.70 and 2.22+0.58,respectively),with no difference in D/R PDV between groups C and D.Twenty-four out of 32 patients in group C with D/R PDV were less than 2.0 compared to 29 out of 33 patients in group D (P>0.05).Significant negative correlation was found between D/R PDV. D/R PSV and interseptal thickness. left ventricular mass index in hypertensive patients.These data show that impaired CFR in hypertensive patients with LVH is comparable to that in patients with coronary heart disease.展开更多
AIM： To investigate prevalence of C/onorchis sinensis in patients with gastrointestinal symptoms, and the relation of the infection to hepatobiliary diseases in 26 hospitals in Korea. METHODS： Consecutive patients w...AIM： To investigate prevalence of C/onorchis sinensis in patients with gastrointestinal symptoms, and the relation of the infection to hepatobiliary diseases in 26 hospitals in Korea. METHODS： Consecutive patients who had been admitted to the Division of Gastroenterology with gastrointestinal symptoms were enrolled from March to April 2005. Of those who had been diagnosed with clonorchiasis, epidemiology and correlation between infection and hepatobiliary diseases were surveyed by questionnaire. RESULTS： Of 3080 patients with gastrointestinal diseases, 396 （12.9%） had clonorchiasis and 1140 patients （37.2%） had a history of eating raw freshwater fish. Of those with a history of raw freshwater fish ingestion, 238 （20.9%） patients had clonorchiasis. Cholangiocarcinoma was more prevalent in C. sinensis-infected patients than nonnfected patients [34/396 （8.6%） vs 145/2684 （5.4%）, P = 0.015]. Cholangiocarcinoma and clonorchiasis showed statistically significant positive cross-relation （P = 0.008）. Choledocholithiasis, cholecystolithiasis, cholangitis, hepatocellular carcinoma, and biliary pancreatitis did not correlate with clonorchiasis. CONCLUSION： Infection rate of clonorchiasis was still high in patients with gastrointestinal diseases in Korea, and has not decreased very much during the last two decades. Cholangiocarcinoma was related to clonorchiasis, which suggested an etiological role for the parasite.展开更多
Human aging is a global issue with important implications for current and future incidence and prevalence of health conditions and disability. Cardiac arrhythmias, including atrial fibrillation, sudden cardiac death, ...Human aging is a global issue with important implications for current and future incidence and prevalence of health conditions and disability. Cardiac arrhythmias, including atrial fibrillation, sudden cardiac death, and bradycardia requiring pacemaker placement, all increase exponentially after the age of 60. It is important to distinguish between the normal, physiological consequences of aging on cardiac electrophysiology and the abnormal, pathological alterations. The age-related cardiac changes include ventricular hypertrophy, senile amyloidosis, cardiac valvular degenerative changes and annular calcification, fibrous infiltration of the conduction system, and loss of natural pacemaker cells and these changes could have a profound effect on the development of arrhythmias. The age-related cardiac electrophysiological changes include up- and down-regulation of specific ion channel expression and intmcellular Ca2＋ overload which promote the development of cardiac arrhythmias. As ion channels are the substrates of antiarrhythmic drugs, it follows that the pharmacokinetics and pharmacodynamics of these drugs will also change with age. Aging alters the absorption, distribution, metabolism, and elimination of antiarrhythmic drugs, so liver and kidney function must be monitored to avoid potential adverse drug effects, and antiarrhythmic dosing may need to be adjusted for age. Elderly patients are also more susceptible to the side effects of many antiarrhytbanics, including bradycardia, orthostatic hypotension, urinary retention, and falls. Moreover, the choice of antiarrhythmic drugs in the elderly patient is frequently complicated by the presence of co-morbid conditions and by polypharmacy, and the astute physician must pay careful attention to potential drug-drug interactions. Finally, it is important to remember that the use of antiarrhythmic drugs in elderly patients must be individualized and tailored to each patient＇s physiology, disease processes, and medication regimen.展开更多
In today＇s management of the teaching staff of public security colleges and universities, the research on the Psychological Contract problem is not only beneficial to the management and estimation of the teachers, bu...In today＇s management of the teaching staff of public security colleges and universities, the research on the Psychological Contract problem is not only beneficial to the management and estimation of the teachers, but also has an important role in the coordination and stability of the whole system of public security colleges and universities. Based on the theory of Psychological Contract, this paper expounds the basic understanding and research value of Psychological Contract, and puts forward the measures to cultivate teachers＇ good character and understanding, and as well as coordinate teachers＇ needs, effectively change teachers＇ attitude and actively promote the establishment of good interpersonal relationship to explain the research on the Management Mechanism of Teachers in Public Security Colleges and Universities from the Perspective of Psychological Contract.展开更多
Objective: To observe the influence of electrolytic destruction of nucleus soli tary tract (NTS) and hypothalamic paraventricular nucleus (PVN) on the effect of electroacupuncture (EA) in improving ischemic myocardia ...Objective: To observe the influence of electrolytic destruction of nucleus soli tary tract (NTS) and hypothalamic paraventricular nucleus (PVN) on the effect of electroacupuncture (EA) in improving ischemic myocardia cellular transmembrane action potential (TMAP). Methods: 38 Japanese breed big-ear wh ite rabbits (ane sthetized with 20% Urethane, 4 mL/kg) were randomly divided into acute myocardia l ischemia (AMI) group (n=8), PVN destruction group ( n=12) and PVN+NTS destructio n group (n=18). AMI model was established by occlusion of the descending anterio r branch (DAB) of the coronary artery. TMAP of myocytes was recorded by using a glass microelectrode which was fixed to a suspending spring silver wire. Bilater al "Neiguan"(PC 6) in all the 3 groups were punctured and stimulated electri call y by using parameters of continuous waves, frequency of 7 Hz, intensity of 6 mA a nd duration of 30 minutes. Results: After AMI, ECG-ST elevated significantly whil e APA lowered, APD50 and APD90 shortened clearly in comparison with those of pre -AMI in the 3 groups. Compared with AMI group, ECG-ST values of PVN destructi on group and PVN+NTS destruction group were significantly higher (P <0.05～0.01), whi le APA, APD50 and APD90 all significantly lower in all the recording time course s(P<0.05). The facts displayed that electrolytic destru ction of PVN and PVN+NT S could produce ischemic myocardial injury and reduce the protective effect of E A on ischemic myocardial cells. Comparison between PVN destruction and PVN+NTS g roups showed that all the 4 indexes of the later group were evidently worse than those of the former group (P<0.05), suggesting after des truction of these two n uclei, the effect of EA was worsened further. Conclusion: Electrolytic destru ction of PVN and NTS weakens the protective effect of EA on ischemic myocardial cells, both NTS and PVN take part in the effect of EA of "Neiguan"(PC 6) Point i n improving ischemic myocardium.展开更多
This paper reviews the recently developed optical interconnect technologies designed for scalable, low latency and high-throughput comunications within datacenters or high perforrmnce computers. The three typical arch...This paper reviews the recently developed optical interconnect technologies designed for scalable, low latency and high-throughput comunications within datacenters or high perforrmnce computers. The three typical architectures including the broadcast-and-select based Optical Shared Memory Supercomputer Interconnect System （OSMOSIS） switch, the defection routing based Data Vortex switch and the arrayed waveguide grating based Low-latency Interconnect Optical Network Switch （LIONS） switch are discussed in detail. In particular, we investigate the various Ioopback buffering technologies in LIONS and present a proof of principle testbed demonstration showing feasibility of LIONS architecture. Moreover, the performance of LIONS, Data Vortex and OSMOSIS with traditional state-of-the-art electrical switching network based on the Flattened-ButterFly （FBF） architecture in terms of throughput and latency are compared. The sinmlation based perfortmnce study shows that the latency of LIONS is almost independent of the number of input ports and does not saturate even at very high input load.展开更多
As a great challenge of network virtualization, virtual network embedding/mapping is increasingly important. It aims to successfully and efficiently assign the nodes and links of a virtual network （VN） onto a shared...As a great challenge of network virtualization, virtual network embedding/mapping is increasingly important. It aims to successfully and efficiently assign the nodes and links of a virtual network （VN） onto a shared substrate network. The problem has been proved to be NP-hard and some heuristic algorithms have been proposed. However, most of the algorithms use only the local information of a node, such as CPU capacity and bandwidth, to determine how to map a VN, without considering the top- ological attributes which may pose significant impact on the performance of the embedding. In this paper, a new embedding algorithm is proposed based on real-time topological attributes. The concept ofbetweenness centrality in graph theory is borrowed to sort the nodes of VNs, and the nodes of the substrate network are sorted according to the correlation properties between the former selected and unselected nodes. In this way, node mapping and link mapping can be well coupled. A simulator is built to evaluate the performance of the proposed virtual network embedding （VNE） algorithm. The results show that the new algorithm significantly increases the revenue/cost （R/C） ratio and acceptance ratio as well as reduces the runtime.展开更多
基金Supported by Earmarked Fund for China Agriculture Research System(CARS-11-B03)Key Technology Research and Development Program of Jiangsu Province(BE2013437)the Agricultural Science Independent Innovation Foundation of Jiangsu Province[CX(11)4057]~~
文摘Objective] This study was performed to investigate the trait changes and their correlations as wel as the dynamic changes of biological yield of Xuzishu 3, which wil help to enhance the yield and anthocyanin content of sweetpotato by cul-tivation. [Method] We systematical y measured the agronomic traits, qualitative char-acters and biological yield of Xuzishu 3 during six growing periods to investigate the dynamic changes of its essential characters and yield accumulation. [Result] The characters of Xuzishu 3 appeared most prosperous after the 90th d except for an-thocyanin content. Extremely significant positive correlations were found between ev-ery two of the dry matter rates of above-ground parts （including leaf petioles, leaves and stems）, reducing sugar content and potato weight per plant. Assimilated product distributed more in stems and leaves than in storage roots before the 90th d in growing period. Photosynthetic capacity and net assimilation rate gradual y de-creased after the 90th d, but the assimilated product distributing to storage roots in-creased quickly and maximized in the 135th d. [Conclusion] Xuzishu 3 is a late ma-turing variety requiring more fertilizer, and the accumulation of anthocyanin fluctuates during the growth period of Xuzishu 3. So yield of Xuzishu 3 can be increased by applying more fertilizer and extending the growth period reasonably, meanwhile the anthocyanin content can be increased by means of control ing temperature, light, water and phytohormone within 60 d after planting.
文摘The psychotherapeutic technique plays an important role in acupuncture therapy. In the present paper, the authors explain the relevance of psychotherapeutic technique and curative effect of acupuncture from （1）connection between psychologic factors and curing disease, （2）specialty of acupuncture therapy, and （3）influence of psychologic factors on acupuncture therapy, etc. Finally bring forward how to make good use of the technique during the course of acupuncture.
基金supported by Beijing Natural Science Foundation (4174100)NSFC(61602054)the Fundamental Research Funds for the Central Universities
文摘Cloud computing is becoming an important solution for providing scalable computing resources via Internet. Because there are tens of thousands of nodes in data center, the probability of server failures is nontrivial. Therefore, it is a critical challenge to guarantee the service reliability. Fault-tolerance strategies, such as checkpoint, are commonly employed. Because of the failure of the edge switches, the checkpoint image may become inaccessible. Therefore, current checkpoint-based fault tolerance method cannot achieve the best effect. In this paper, we propose an optimal checkpoint method with edge switch failure-aware. The edge switch failure-aware checkpoint method includes two algorithms. The first algorithm employs the data center topology and communication characteristic for checkpoint image storage server selection. The second algorithm employs the checkpoint image storage characteristic as well as the data center topology to select the recovery server. Simulation experiments are performed to demonstrate the effectiveness of the proposed method.
文摘Coronary blood flow reserve (CFR) was assessed by transesophageal Doppler echocardiography in normal subjects (group A. n=20),hypertensive non-left ventricular hypertrophy (non-LVH)Patients (group B,n=22). hypertensive patients with LVH(group C.n=32)and coronary heart disease patients (group D. n=33) with the volume sample placed at the bifurcation of the left main and left main and left descending coronary artery. Coronary blood flow velocity (CBFV)was evaluated at rest.2 minutes after dipyridamole (0. 56mg/kg. i. v.) . and 2 minutes after aminophylline i.v. The ratio of dipyridamole to rest maximal diastolic velocity (D/R PDV) was considered the index of coronary blood flow reserve.It was found that D/R PDV was significantly less in groups C and D compared with that in groups A and B (D PDC,1.84±0. 57. 1. 57±0. 41 versus 2.59±0.70 and 2.22+0.58,respectively),with no difference in D/R PDV between groups C and D.Twenty-four out of 32 patients in group C with D/R PDV were less than 2.0 compared to 29 out of 33 patients in group D (P>0.05).Significant negative correlation was found between D/R PDV. D/R PSV and interseptal thickness. left ventricular mass index in hypertensive patients.These data show that impaired CFR in hypertensive patients with LVH is comparable to that in patients with coronary heart disease.
基金Supported by The Korean Society of Gastroenterology Research Fund, No. 2005-1
文摘AIM： To investigate prevalence of C/onorchis sinensis in patients with gastrointestinal symptoms, and the relation of the infection to hepatobiliary diseases in 26 hospitals in Korea. METHODS： Consecutive patients who had been admitted to the Division of Gastroenterology with gastrointestinal symptoms were enrolled from March to April 2005. Of those who had been diagnosed with clonorchiasis, epidemiology and correlation between infection and hepatobiliary diseases were surveyed by questionnaire. RESULTS： Of 3080 patients with gastrointestinal diseases, 396 （12.9%） had clonorchiasis and 1140 patients （37.2%） had a history of eating raw freshwater fish. Of those with a history of raw freshwater fish ingestion, 238 （20.9%） patients had clonorchiasis. Cholangiocarcinoma was more prevalent in C. sinensis-infected patients than nonnfected patients [34/396 （8.6%） vs 145/2684 （5.4%）, P = 0.015]. Cholangiocarcinoma and clonorchiasis showed statistically significant positive cross-relation （P = 0.008）. Choledocholithiasis, cholecystolithiasis, cholangitis, hepatocellular carcinoma, and biliary pancreatitis did not correlate with clonorchiasis. CONCLUSION： Infection rate of clonorchiasis was still high in patients with gastrointestinal diseases in Korea, and has not decreased very much during the last two decades. Cholangiocarcinoma was related to clonorchiasis, which suggested an etiological role for the parasite.
文摘Human aging is a global issue with important implications for current and future incidence and prevalence of health conditions and disability. Cardiac arrhythmias, including atrial fibrillation, sudden cardiac death, and bradycardia requiring pacemaker placement, all increase exponentially after the age of 60. It is important to distinguish between the normal, physiological consequences of aging on cardiac electrophysiology and the abnormal, pathological alterations. The age-related cardiac changes include ventricular hypertrophy, senile amyloidosis, cardiac valvular degenerative changes and annular calcification, fibrous infiltration of the conduction system, and loss of natural pacemaker cells and these changes could have a profound effect on the development of arrhythmias. The age-related cardiac electrophysiological changes include up- and down-regulation of specific ion channel expression and intmcellular Ca2＋ overload which promote the development of cardiac arrhythmias. As ion channels are the substrates of antiarrhythmic drugs, it follows that the pharmacokinetics and pharmacodynamics of these drugs will also change with age. Aging alters the absorption, distribution, metabolism, and elimination of antiarrhythmic drugs, so liver and kidney function must be monitored to avoid potential adverse drug effects, and antiarrhythmic dosing may need to be adjusted for age. Elderly patients are also more susceptible to the side effects of many antiarrhytbanics, including bradycardia, orthostatic hypotension, urinary retention, and falls. Moreover, the choice of antiarrhythmic drugs in the elderly patient is frequently complicated by the presence of co-morbid conditions and by polypharmacy, and the astute physician must pay careful attention to potential drug-drug interactions. Finally, it is important to remember that the use of antiarrhythmic drugs in elderly patients must be individualized and tailored to each patient＇s physiology, disease processes, and medication regimen.
文摘In today＇s management of the teaching staff of public security colleges and universities, the research on the Psychological Contract problem is not only beneficial to the management and estimation of the teachers, but also has an important role in the coordination and stability of the whole system of public security colleges and universities. Based on the theory of Psychological Contract, this paper expounds the basic understanding and research value of Psychological Contract, and puts forward the measures to cultivate teachers＇ good character and understanding, and as well as coordinate teachers＇ needs, effectively change teachers＇ attitude and actively promote the establishment of good interpersonal relationship to explain the research on the Management Mechanism of Teachers in Public Security Colleges and Universities from the Perspective of Psychological Contract.
基金This studyis subsidized by National Science Foundation of China (No .30171179) .
文摘Objective: To observe the influence of electrolytic destruction of nucleus soli tary tract (NTS) and hypothalamic paraventricular nucleus (PVN) on the effect of electroacupuncture (EA) in improving ischemic myocardia cellular transmembrane action potential (TMAP). Methods: 38 Japanese breed big-ear wh ite rabbits (ane sthetized with 20% Urethane, 4 mL/kg) were randomly divided into acute myocardia l ischemia (AMI) group (n=8), PVN destruction group ( n=12) and PVN+NTS destructio n group (n=18). AMI model was established by occlusion of the descending anterio r branch (DAB) of the coronary artery. TMAP of myocytes was recorded by using a glass microelectrode which was fixed to a suspending spring silver wire. Bilater al "Neiguan"(PC 6) in all the 3 groups were punctured and stimulated electri call y by using parameters of continuous waves, frequency of 7 Hz, intensity of 6 mA a nd duration of 30 minutes. Results: After AMI, ECG-ST elevated significantly whil e APA lowered, APD50 and APD90 shortened clearly in comparison with those of pre -AMI in the 3 groups. Compared with AMI group, ECG-ST values of PVN destructi on group and PVN+NTS destruction group were significantly higher (P <0.05～0.01), whi le APA, APD50 and APD90 all significantly lower in all the recording time course s(P<0.05). The facts displayed that electrolytic destru ction of PVN and PVN+NT S could produce ischemic myocardial injury and reduce the protective effect of E A on ischemic myocardial cells. Comparison between PVN destruction and PVN+NTS g roups showed that all the 4 indexes of the later group were evidently worse than those of the former group (P<0.05), suggesting after des truction of these two n uclei, the effect of EA was worsened further. Conclusion: Electrolytic destru ction of PVN and NTS weakens the protective effect of EA on ischemic myocardial cells, both NTS and PVN take part in the effect of EA of "Neiguan"(PC 6) Point i n improving ischemic myocardium.
基金the Department of Defense under Contract No.#H88230-08-C-0202the Google Research Awards
文摘This paper reviews the recently developed optical interconnect technologies designed for scalable, low latency and high-throughput comunications within datacenters or high perforrmnce computers. The three typical architectures including the broadcast-and-select based Optical Shared Memory Supercomputer Interconnect System （OSMOSIS） switch, the defection routing based Data Vortex switch and the arrayed waveguide grating based Low-latency Interconnect Optical Network Switch （LIONS） switch are discussed in detail. In particular, we investigate the various Ioopback buffering technologies in LIONS and present a proof of principle testbed demonstration showing feasibility of LIONS architecture. Moreover, the performance of LIONS, Data Vortex and OSMOSIS with traditional state-of-the-art electrical switching network based on the Flattened-ButterFly （FBF） architecture in terms of throughput and latency are compared. The sinmlation based perfortmnce study shows that the latency of LIONS is almost independent of the number of input ports and does not saturate even at very high input load.
基金Project supported by the National Basic Research Program （973） of China （No. 2012CB315801）, the National Natural Science Foundation of China （Nos. 61302089 and 61300184）, and the Fundamental Research Funds for the Central Universities, China （No. 2013RC0113）
文摘As a great challenge of network virtualization, virtual network embedding/mapping is increasingly important. It aims to successfully and efficiently assign the nodes and links of a virtual network （VN） onto a shared substrate network. The problem has been proved to be NP-hard and some heuristic algorithms have been proposed. However, most of the algorithms use only the local information of a node, such as CPU capacity and bandwidth, to determine how to map a VN, without considering the top- ological attributes which may pose significant impact on the performance of the embedding. In this paper, a new embedding algorithm is proposed based on real-time topological attributes. The concept ofbetweenness centrality in graph theory is borrowed to sort the nodes of VNs, and the nodes of the substrate network are sorted according to the correlation properties between the former selected and unselected nodes. In this way, node mapping and link mapping can be well coupled. A simulator is built to evaluate the performance of the proposed virtual network embedding （VNE） algorithm. The results show that the new algorithm significantly increases the revenue/cost （R/C） ratio and acceptance ratio as well as reduces the runtime.
