In the robotic community more and more hands are developed. Based on theexperience of HIT Hand and DLR Hand II, a smaller and easier manufactured dexterous robot hand withmultisen-sory function and high integration is...In the robotic community more and more hands are developed. Based on theexperience of HIT Hand and DLR Hand II, a smaller and easier manufactured dexterous robot hand withmultisen-sory function and high integration is jointly developed. The prototype of the hand issuccessfully built. It has 4 fingers in total 13-DOFs (degree of freedom). Each finger has 3-DOFsand 4 joints, the last 2 joints are mechanically coupled by means of four-bar linkage mechanism. Italso has an additional DOF to realize motion of the thumb relative to the palm. The fingertip forcecan reach up to 10 N. Full integration of mechanical body, actuation system, multisensory system andelectronics is a significant feature. DSP based control system is implemented in PCI busarchitecture and the serial communication between the hand and DSP needs only 2 lines.展开更多
Yunnan is famous for its attractive karst landscapes especially shilins, fengcong and fenglin. The development of caves beneath the shilins in the vicinity of Lunan is closely connected with the formation of shilins. ...Yunnan is famous for its attractive karst landscapes especially shilins, fengcong and fenglin. The development of caves beneath the shilins in the vicinity of Lunan is closely connected with the formation of shilins. Most of the waters percolating through shilins run through the caves beneath them and are responsible for their formation. The study of cave speleogenesis deepens knowledge about both the development of shilins and karst structure. In the vicinity of the Lunan Shilin, speleological, morphological and structural geological studies of four karst caves have been accomplished. At Puzhehei, Qiubei, which is characterised by numerous fenglin, fengcong and caves, speleological and morphological studies have been performed. Cave sediments for paleomagnetic analyses have been taken from all studied areas (samples CH 1-9). Karst caves in SE Yunnan are probably much older than the age of the cave sediments (<780,000 years B.P.). The studied areas are located in the vicinity of the Xiaojiang fault (N-S direction I and the Red River fault (NW-SE direction). The general directions of both active faults are assumed to influence the direction of the most frequent fissures as well as the cave passages near the Lunan Shilin. The Xiaojiang fault more strongly influences cave passage orientation, while the more distant Red River fault most strongly influences fissure orientation.展开更多
This paper introduces two types of rapid inversion imaging techniques for long offset transient electromagnetic sounding: namely S-inversing algorithm based on the conductive sheet model and quasi-wave equation based ...This paper introduces two types of rapid inversion imaging techniques for long offset transient electromagnetic sounding: namely S-inversing algorithm based on the conductive sheet model and quasi-wave equation based on wavefield transform. The corresponding software was developed with VC++. Application of the algorithms to the processing of the real Lotem data from the western part of China proved that two the algorithms and the developed software package are effective, fast and stable.展开更多
The utilization of MT and CEMP methods has been extended from plains to mountainous areas. The rugged topography not only brings about difficulties in field electro-magnetic measurements but also affects data processi...The utilization of MT and CEMP methods has been extended from plains to mountainous areas. The rugged topography not only brings about difficulties in field electro-magnetic measurements but also affects data processing, interpretation and results. Analyzed in this paper were the 2D and 3D forward modeling of the fluctuated topography and the real examples to discuss the topographic effects on electric data and the practical methods to avoid these effects.展开更多
The discovery of the essential difference of maximum ion energy for TW-pslaser plasma interaction compared with, the 100 ns laser pulses led to the theory of a skin layermodel where the control of prepulses suppressed...The discovery of the essential difference of maximum ion energy for TW-pslaser plasma interaction compared with, the 100 ns laser pulses led to the theory of a skin layermodel where the control of prepulses suppressed the usual relativistic self-focusing. The subsequentgeneration of two nonlinear force driven blocks has been demonstrated experimentally and inextensive numerical studies where one block moves against the laser light and the other block intothe irradiated target. These blocks of nearly solid state density DT plasma correspond to ion beamcurrent densities exceeding 10^(10) A/cm^2 where the ion velocity can be chosen up to highlyrelativistic values. Using the results of the expected ignition of DT fuel by light ion beams, aself-sustained fusion reaction front may be generated even into uncompressed solid DT fuel similarto the Nuckolls-Wood scheme where 10 kJ laser pulses produce 100 MJ fusion energy. This new andsimplified scheme of laser-ICF needs and optimisation of the involved parameters.展开更多
Objective: to explore the application and nursing countermeasures of umbilical vein catheterization in premature infants. Methods: 100 premature infants were selected from our hospital from January 2021 to February 20...Objective: to explore the application and nursing countermeasures of umbilical vein catheterization in premature infants. Methods: 100 premature infants were selected from our hospital from January 2021 to February 2022. They were divided into control group (50 cases, peripheral venous indwelling needle treatment) and observation group (50 cases, umbilical vein indwelling treatment) by computer lottery. The indwelling condition, treatment condition and adverse events of the two groups were observed and compared. Results: the success rate of one-time puncture in the observation group was 96.00%, higher than 80.00% in the control group (P < 0.05);The puncture point search time (84.54 ± 15.69) s and the compression coagulation time (264.54 ± 30.55) s were shorter than those in the control group (288.36 ± 15.54) s and (480.25 ± 42.22) s (P < 0.05);The retention time was (6.05 ± 1.27) d, which was longer than that in the control group (4.22 ± 1.65) d (P < 0.05);The number of intravenous indwelling needles (12.69 ± 5.04) was less than that in the control group (16.45 ± 7.28) (P < 0.05);The duration of intravenous treatment (20.47 ± 2.24) d and the total incidence of adverse events was 4.00%, lower than that of the control group (24.65 ± 2.66) d and 20.00% (P < 0.05). Conclusion: the effective application of umbilical vein catheterization during the treatment of premature infants can effectively improve the success rate of one-time puncture and make intravenous therapy more effective. Strengthening relevant nursing intervention can effectively reduce the incidence of adverse events and make intravenous therapy more safe, so as to better maintain the health and safety of children.展开更多
Water quality monitoring is a process of evaluating water quality, including monitoring and measuring the trend, concentration and water body change of various pollutants. The organization and implementation of import...Water quality monitoring is a process of evaluating water quality, including monitoring and measuring the trend, concentration and water body change of various pollutants. The organization and implementation of important water quality monitoring will provide representative, accurate, comparable and complete data for governments at all levels, timely feedback the monitoring results to relevant ministries and commissions, and provide scientific and theoretical basis for governments at all levels to make water pollution prevention and control decisions.展开更多
The development of environmental water quality monitoring itself is difficult, and the content involved is extensive and complex. In order to carry out this work, people with certain professional ability are often nee...The development of environmental water quality monitoring itself is difficult, and the content involved is extensive and complex. In order to carry out this work, people with certain professional ability are often needed. At the same time, the development of this work is closely related to our daily life. If there is no scientific quality control of environmental water quality monitoring, it may have a great adverse impact on our life. Especially in the period of rapid economic development in China, it is more necessary to carry out environmental water quality monitoring. Based on this, this article attempts to analyze the relevant contents of environmental water quality monitoring quality control for reference only.展开更多
To summarize the nursing experience of a case of pulmonary embolism who underwent pulmonary exploration and pulmonary artery dilation after thrombolysis. Key points of nursing: Patients were given oral and subcutaneou...To summarize the nursing experience of a case of pulmonary embolism who underwent pulmonary exploration and pulmonary artery dilation after thrombolysis. Key points of nursing: Patients were given oral and subcutaneous low-molecular-weight heparin for anticoagulation, followed by intravenous thrombolysis and short-term interventional operation. During the whole process, patients had a high risk of bleeding and may have serious complications. In addition, patients had less relevant nursing experience in the past. However, with the cooperation of medical care, the patient's condition was stable and improved after 8 days of specialized and individualized treatment.展开更多
Water is a life resource, especially with the development of society, and the pollution of water quality is getting more and more serious. At the same time, with the improvement of living standards, peoples requiremen...Water is a life resource, especially with the development of society, and the pollution of water quality is getting more and more serious. At the same time, with the improvement of living standards, peoples requirements for water are getting higher and higher, so they pay more and more attention to the environment. If the water quality can be effectively monitored, it can provide an important reference for the next step of environmental protection, which not only realizes the protection of water quality and environment, but also ensures peoples health. It should be noted that water quality can be fully reflected through water quality monitoring, which provides a more scientific basis for further strengthening water resources management and protecting the environment. It should be noted that the pollution of water resources and environment has become more serious in recent years, so it is imperative and urgent to comprehensively strengthen the monitoring of water quality and protect water resources.展开更多
Difference in the genomic compositions of prokaryotes is the basis of the diversity in their biological characters. However, besides their flora-or strain-specific genes,those floras with closer relationship in the ev...Difference in the genomic compositions of prokaryotes is the basis of the diversity in their biological characters. However, besides their flora-or strain-specific genes,those floras with closer relationship in the evolution also have conserved “backbone sequences”, which reveal the marks of their origin and evolution, and these “backbone sequences”are just the basis of their elementary living abilities and common biological properties. Shigella is very closely related to E. coli in the origin and evolution, and may turn out to belong to the same genus. In this study, a microarray containing E. coli K-12 whole genome and Sf301 specific ORFs is used to investigate the genomic components of four Shigella strains. The results indicate that 16%-22% K-12 ORFs sequences are not detected in the genome of Shigella strains while the genome of Shigella contains at least 2800 conserved ORFs, which compose the common “backbone sequences”.Advanced analysis indicated that the “backbone sequences”are the essential components in maintaining the normal physiological activities of intestinal bacteria. Furthermore,only 20% Sf301-specific ORFs exist in other strains simultaneously, which demonstrate the great genome heterogeneity and the genetic diversity among the strains.展开更多
文摘In the robotic community more and more hands are developed. Based on theexperience of HIT Hand and DLR Hand II, a smaller and easier manufactured dexterous robot hand withmultisen-sory function and high integration is jointly developed. The prototype of the hand issuccessfully built. It has 4 fingers in total 13-DOFs (degree of freedom). Each finger has 3-DOFsand 4 joints, the last 2 joints are mechanically coupled by means of four-bar linkage mechanism. Italso has an additional DOF to realize motion of the thumb relative to the palm. The fingertip forcecan reach up to 10 N. Full integration of mechanical body, actuation system, multisensory system andelectronics is a significant feature. DSP based control system is implemented in PCI busarchitecture and the serial communication between the hand and DSP needs only 2 lines.
文摘Yunnan is famous for its attractive karst landscapes especially shilins, fengcong and fenglin. The development of caves beneath the shilins in the vicinity of Lunan is closely connected with the formation of shilins. Most of the waters percolating through shilins run through the caves beneath them and are responsible for their formation. The study of cave speleogenesis deepens knowledge about both the development of shilins and karst structure. In the vicinity of the Lunan Shilin, speleological, morphological and structural geological studies of four karst caves have been accomplished. At Puzhehei, Qiubei, which is characterised by numerous fenglin, fengcong and caves, speleological and morphological studies have been performed. Cave sediments for paleomagnetic analyses have been taken from all studied areas (samples CH 1-9). Karst caves in SE Yunnan are probably much older than the age of the cave sediments (<780,000 years B.P.). The studied areas are located in the vicinity of the Xiaojiang fault (N-S direction I and the Red River fault (NW-SE direction). The general directions of both active faults are assumed to influence the direction of the most frequent fissures as well as the cave passages near the Lunan Shilin. The Xiaojiang fault more strongly influences cave passage orientation, while the more distant Red River fault most strongly influences fissure orientation.
文摘This paper introduces two types of rapid inversion imaging techniques for long offset transient electromagnetic sounding: namely S-inversing algorithm based on the conductive sheet model and quasi-wave equation based on wavefield transform. The corresponding software was developed with VC++. Application of the algorithms to the processing of the real Lotem data from the western part of China proved that two the algorithms and the developed software package are effective, fast and stable.
文摘The utilization of MT and CEMP methods has been extended from plains to mountainous areas. The rugged topography not only brings about difficulties in field electro-magnetic measurements but also affects data processing, interpretation and results. Analyzed in this paper were the 2D and 3D forward modeling of the fluctuated topography and the real examples to discuss the topographic effects on electric data and the practical methods to avoid these effects.
文摘The discovery of the essential difference of maximum ion energy for TW-pslaser plasma interaction compared with, the 100 ns laser pulses led to the theory of a skin layermodel where the control of prepulses suppressed the usual relativistic self-focusing. The subsequentgeneration of two nonlinear force driven blocks has been demonstrated experimentally and inextensive numerical studies where one block moves against the laser light and the other block intothe irradiated target. These blocks of nearly solid state density DT plasma correspond to ion beamcurrent densities exceeding 10^(10) A/cm^2 where the ion velocity can be chosen up to highlyrelativistic values. Using the results of the expected ignition of DT fuel by light ion beams, aself-sustained fusion reaction front may be generated even into uncompressed solid DT fuel similarto the Nuckolls-Wood scheme where 10 kJ laser pulses produce 100 MJ fusion energy. This new andsimplified scheme of laser-ICF needs and optimisation of the involved parameters.
文摘Objective: to explore the application and nursing countermeasures of umbilical vein catheterization in premature infants. Methods: 100 premature infants were selected from our hospital from January 2021 to February 2022. They were divided into control group (50 cases, peripheral venous indwelling needle treatment) and observation group (50 cases, umbilical vein indwelling treatment) by computer lottery. The indwelling condition, treatment condition and adverse events of the two groups were observed and compared. Results: the success rate of one-time puncture in the observation group was 96.00%, higher than 80.00% in the control group (P < 0.05);The puncture point search time (84.54 ± 15.69) s and the compression coagulation time (264.54 ± 30.55) s were shorter than those in the control group (288.36 ± 15.54) s and (480.25 ± 42.22) s (P < 0.05);The retention time was (6.05 ± 1.27) d, which was longer than that in the control group (4.22 ± 1.65) d (P < 0.05);The number of intravenous indwelling needles (12.69 ± 5.04) was less than that in the control group (16.45 ± 7.28) (P < 0.05);The duration of intravenous treatment (20.47 ± 2.24) d and the total incidence of adverse events was 4.00%, lower than that of the control group (24.65 ± 2.66) d and 20.00% (P < 0.05). Conclusion: the effective application of umbilical vein catheterization during the treatment of premature infants can effectively improve the success rate of one-time puncture and make intravenous therapy more effective. Strengthening relevant nursing intervention can effectively reduce the incidence of adverse events and make intravenous therapy more safe, so as to better maintain the health and safety of children.
文摘Water quality monitoring is a process of evaluating water quality, including monitoring and measuring the trend, concentration and water body change of various pollutants. The organization and implementation of important water quality monitoring will provide representative, accurate, comparable and complete data for governments at all levels, timely feedback the monitoring results to relevant ministries and commissions, and provide scientific and theoretical basis for governments at all levels to make water pollution prevention and control decisions.
文摘The development of environmental water quality monitoring itself is difficult, and the content involved is extensive and complex. In order to carry out this work, people with certain professional ability are often needed. At the same time, the development of this work is closely related to our daily life. If there is no scientific quality control of environmental water quality monitoring, it may have a great adverse impact on our life. Especially in the period of rapid economic development in China, it is more necessary to carry out environmental water quality monitoring. Based on this, this article attempts to analyze the relevant contents of environmental water quality monitoring quality control for reference only.
文摘To summarize the nursing experience of a case of pulmonary embolism who underwent pulmonary exploration and pulmonary artery dilation after thrombolysis. Key points of nursing: Patients were given oral and subcutaneous low-molecular-weight heparin for anticoagulation, followed by intravenous thrombolysis and short-term interventional operation. During the whole process, patients had a high risk of bleeding and may have serious complications. In addition, patients had less relevant nursing experience in the past. However, with the cooperation of medical care, the patient's condition was stable and improved after 8 days of specialized and individualized treatment.
文摘Water is a life resource, especially with the development of society, and the pollution of water quality is getting more and more serious. At the same time, with the improvement of living standards, peoples requirements for water are getting higher and higher, so they pay more and more attention to the environment. If the water quality can be effectively monitored, it can provide an important reference for the next step of environmental protection, which not only realizes the protection of water quality and environment, but also ensures peoples health. It should be noted that water quality can be fully reflected through water quality monitoring, which provides a more scientific basis for further strengthening water resources management and protecting the environment. It should be noted that the pollution of water resources and environment has become more serious in recent years, so it is imperative and urgent to comprehensively strengthen the monitoring of water quality and protect water resources.
文摘Difference in the genomic compositions of prokaryotes is the basis of the diversity in their biological characters. However, besides their flora-or strain-specific genes,those floras with closer relationship in the evolution also have conserved “backbone sequences”, which reveal the marks of their origin and evolution, and these “backbone sequences”are just the basis of their elementary living abilities and common biological properties. Shigella is very closely related to E. coli in the origin and evolution, and may turn out to belong to the same genus. In this study, a microarray containing E. coli K-12 whole genome and Sf301 specific ORFs is used to investigate the genomic components of four Shigella strains. The results indicate that 16%-22% K-12 ORFs sequences are not detected in the genome of Shigella strains while the genome of Shigella contains at least 2800 conserved ORFs, which compose the common “backbone sequences”.Advanced analysis indicated that the “backbone sequences”are the essential components in maintaining the normal physiological activities of intestinal bacteria. Furthermore,only 20% Sf301-specific ORFs exist in other strains simultaneously, which demonstrate the great genome heterogeneity and the genetic diversity among the strains.
