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Large areas of $$^{3}$$ He neutron detector array and corresponding readout electronics are used in the MPI built at China Spallation Neutron Source (CSNS) to measure the position and flight time of scattered neutrons, and MPI has a high requirement for the position resolution of $$^{3}$$ He neutron detector. A $$^{3}$$ He neutron detector readout electronics prototype composed of two front-end boards and one digital readout board is designed to meet the above requirements. Testing the whole readout electronics system before its mass production to ensure it can run correctly and fulfill the functional and performance requirements. The test of the readout electronics prototype is implemented in the laboratory, and a signal generator is used to generate electronic signals instead of actual neutron signals. The position resolution test of the readout electronics prototype with $$^{3}$$ He tubes is carried out in the No. 20 beamline measurement room of CSNS. The functional and performance tests in the laboratory state that the readout electronics prototype can fulfill the readout requirements. The typical value of charge resolution is 0.85 fC; the integral nonlinearity of charge is 0.094 $$\%$$ in the input charge range from 100 to 800 fC. The position resolution test result of the prototype with $$^{3}$$ He tubes is better than the design requirement of 10 mm and also quite good compared with that of some other commercial products. These tests provide a reliable basis for the mass production of the readout electronics prototype.

The GEM-based neutron detector has flourished in the past decade. However, most of the GEM-based neutron detectors operate in the flow-gas mode, and the long-term performances of the detectors may be unstable due to the dynamic changes of atmospheric pressure and ambient temperature. In this work, a sealed ceramic GEM-based neutron detector with 100 mm × 100 mm sensitive area was developed at China Spallation Neutron Source (CSNS). Various characteristics of the detector were determined. These included the plateau curve, neutron beam profile, neutron wavelength spectrum, spatial resolution (FWHM: 2.77 ± 0.01(stat) mm), two-dimensional (2D) imaging ability, neutron detection efficiency and long-term counting rate instability (Relative Standard Deviation (RSD): 0.80%). The results revealed the good performance of the detector in sealed mode. Furthermore, the detector can be used for measurements of the direct neutron beam at CSNS.

Objective To retrospectively analyze the data of 72 patients with tuberculous meningitis (TBM) combined with cranial nerve palsy, to explore the incidence, clinical features, CSF assay changes and outcome in patients with TBM. Patients and methods A total of 72 patients were diagnosed as TBM with cranial nerve palsy. The gender, age, clinical manifestations, CSF examinations, cerebral magnetic resonance imaging (MRI) enhancement scan were collected. All these patients had completed at least 2 months of follow up after anti-tuberculous treatment. Results This study retrospectively evaluated 486 patients; include 254 (52.3%) men and 232 (47.7%) women. The mean age was 35.2 ± 17.0 years. 72 patients (14.8%) were diagnosed as TBM with cranial nerve palsy. Among them, 38 cases (52.8%) had optic nerve palsy (the 2nd nerve), 41 cases (56.9%) had oculomotor nerve palsy (the 3rd nerve), 3 cases (4.2%) had abducens nerve palsy (the 6th nerve), and 10 cases (13.9%) had auditory nerve palsy (the 8th nerve). 16 patients (22.2%) had two groups of cranial nerve involvement (oculomotor nerve and optic nerve in 10 cases, optic nerve and auditory nerve in 5 cases, and optic nerve and abducens nerve in 1 case). Two patients (2.8%) had three groups of cranial nerve involvement (oculomotor nerve, optic nerve and abducens nerve). CSF MTB was detected by acid fast bacilli (no patient was positive), MTB DNA detection by multiplex polymerase chain reaction (PCR) (3 patients were positive) and MTB cultures (2 patients were positive). There was no significant difference of CSF cells and biochemistry investigations between the patients with or without cranial nerve palsy. Magnetic resonance imaging (MRI) enhancement scan were done in 66 (91.7%) patients after admission. It was abnormal in 57 (86.3%) patients. 15 cases (26.3%) had meningeral enhancement, 25 cases (43.9%) had tuberculoma, 11 cases (19.3%) had hydrocephalus and 6 cases (10.5%) with infarct. All patients were followed up after 2 months of anti-tuberculous treatment. 70 patients (97.2%, 70/72) with the cranial nerve palsy were fully recovered without obvious sequel. Conclusion The complications of cranial nerve palsy in TBM patients are not uncommon, and the rate of misdiagnosis is high, which makes them vulnerable to emergencies such as disturbance of consciousness. Effective anti-tuberculous treatment can restore most cranial nerve palsy.

Based on the needle selection principle and requirements for hybrid magnetic type of driving knitting needles, this paper puts forward the mechanical model for the knitting needles of magnetic suspension drive mode. This paper analyzes the force model of the knitting needle by establishing the relationship between the magnetic force and the air gap. It also researches stress and strain for the knitting needle by using the finite element method. All these results will provide guidance for the optimal design of the knitting needle and parameters design of the key components like the needle cylinder and so on, at the same time these results will also provide a theoretical basis for the study of coupling mechanism for the knitting needle.

Using the fuzzy evaluation theory,through the establishment of the safety of large cross construction of fuzzy evaluation model, using AHP to evaluate the safety of large cross construction, the comprehensive safety evaluation,and points out its advantages and disadvantages. The fuzzy control is conducive to the management level of large-scale cross constructionsafety improve, to the great guidance for other types ofcity rail traffic.

During the construction of concrete structure, laying controlled permeability formwork within the traditional formwork can effectively improve the durability of concrete for marine structures and prolong the working life of concrete structures. This paper discusses the working mechanism of controlled permeability formwork, introduces its development history and research status, summarizes the construction process and matters needing attention of controlled permeability formwork, and puts forward the problems remaining to be solved at present.

Monitoring and controlling of vertical construction for main arch ribs is most important for concrete-filled steel tube (CFST) arch bridges due to high risk. Controlling the difference of elevation between the two main arch ribs has direct influence on the mechanical behavior of lateral brace, towers and temporary hinges at arch abutments of main piers. Therefore, transverse synchronization control is the main priority in vertical rotating construction phase. Taking a half-through CFST arch bridge in Shijiazhuang City as an example, this paper make a study of transverse synchronization control of the two main arch ribs during vertical rotation. The finite element method (FEM) software-Midas is employed to simulate the main arch ribs in rotation construction phase, and maximum value of the difference of elevation between the two main arch ribs is obtained to offer reference and basis of vertical rotation construction of this bridge.

To discuss the relationship between tongue manifestation and the degree of neurological impairment in the patients with acute cerebral infarction.Two hundred patients with first unilateral cerebral infarction were recruited. The relationship between different tongue manifestation and National Institute of Health Stroke Scale (NIHSS) were analyzed.NIHSS scores in the patients from different tongue color groups were analyzed and further analysis demonstrated that the NIHSS score was higher in the patients with red or bluish-purple tongue than that of those with the pink (P0.01). On tongue fur, the NIHSS score in the patients with thick fur was higher than that of those with the thin (P=0.003). NIHSS score in patients with slippery, moist or dry fur was significant different (P=0.003), Further analysis demonstrated that the NIHSS score was higher in the patients with dry fur than that of those with moist fur, and had statistical significance (P=0.01). The NIHSS score was higher in patients from greasy fur group than that of the non-greasy (P=0.002). There was significant difference of NHISS score in the patients with different fur color (P=0.000), and further analysis demonstrated that the NHISS score in white-yellow, yellow fur group were higher than that of the white (P=0.06 or 0.000).The changes of tongue manifestation might be associated with the degree of neurological impairment in the patients with acute cerebral infarction.

In order to realize remote measure, remote communication and remote control function in wind-solar hybrid street light operation management system, a kind of management system based on ZigBee technology is introduced by this paper. This design is used JN513x series ZigBee wireless communication micro controller to build hardware platform, and is used Modbus protocol to manage all light controllers. The data exchange between each wireless module and the gathering terminal is completed by ZigBee wireless network. The data exchange between each gathering terminal and monitoring center is completed by GPRS/CDMA network. This design has applied to Hunan new energy road lighting project with stability and excellent performance.

In order to realize the conversion from computer flat knitting machine design pattern to control data, a kind of control data preparation method in development of computerize flat knitting machine is introduced by this paper. This method has five parts, including of PAT data, CNT data, SYS data, KSD data, and FKD data. This paper illustrates the function of all the data documents and data definition, and give the FKD data conversion algorithm. Most existing pattern of design software flat knitting machine process files can be compatible by this method. FKD data conversion algorithm has small burden of data to control system. FKD data transmission is compact and can be quickly applied in all kinds of master-slave type of computer knitting machine control system. This design has applied to computerize flat knitting machine controller with stability of processing data and excellent performance.

Based on the magnetic suspension theory, this paper has proposed a kind of suspension-type jacquard needle driving principle, and designed its 3-dimension model method. By making finite element analysis on suspension-type needles, analyzing the experimental data and designing the structure, we can get the relationship among related parameters under conditions of different permanent-magnet thickness and air gaps, which can provide criteria in theory and application for designing on new needle driving principle, control system and needle.

Taking a half-through concrete-filled steel tube(CFST) tied arch bridge with span arrangement (40m+200m+40)m as an example, this paper make a study of tower’s stability, construction monitoring and control during vertical rotation of the arch rib. Using the finite element method to simulate the rotation construction phase of the bridge by the way of normal erection calculation, the effect of several different factors to the tower’s instability is analyzed in detail. On the basis, we obtained the effective measure to ensure the tower stable. Meanwhile, survey the tower’s stress and deformation to supervise the tower during the rotation construction. Finally control tower top displacement and its foot stress to guarantee the rotation construction of the CFST arch bridge quality and safety.

This paper has proposed a drive theory for magnetic suspended knitting needles based on the magnetic suspension theory. The feasibility of the principles for suspended-driven needle selection of circular knitting machine has been discussed. The mechanical characteristics of needles under different drive conditions, and the stress analysis of electromagnetic force have been simulated with ANSYS software.

ObjectiveTo analyze the association between tongue manifestations and the levels of glucose (GLU), total cholesterol (TCH), and high-density lipoprotein cholesterol (HDL-C) in subjects with acute cerebral infarction.MethodsHospitalized patients with first unilateral cerebral infarction in the Neurological Department of Xuanwu Hospital were included and the correlation between tongue fur color, fur nature, and the levels of GLU, TCH, HDL-C were analyzed.ResultsHDL level in the thin fur group was higher than that in the thick fur group (P=0.02). The difference in the levels of GLU, TCH, and HDL-C among the groups was significant (P

BACKGROUND: The diagnosis of pleural tuberculosis (TB) remains to be difficult. Interferon-gamma release assay (IGRA) is a promising method for diagnosing TB in low TB burden countries. The release of interferon-gamma (IFN-γ) by T lymphocytes increases at a localized site of infection with Mycobacterium tuberculosis antigen. This study aimed to examine the clinical accuracy of T-SPOT.TB on pleural fluid and peripheral blood for the diagnosis of pleural TB in high TB burden country. METHODS: 168 subjects with pleural effusion were enrolled prospectively and examined with T-SPOT.TB on pleural fluid and peripheral blood samples simultaneously. RESULTS: The receiver operating characteristic (ROC) curve and cut-off value of pleural fluid T-SPOT.TB was established according to spot forming cells (SFC) between culture/biopsy-confirmed pleural TB group and no pleural TB group. The sensitivity of pleural fluid T-SPOT.TB and peripheral blood T-SPOT.TB was similar (96.3% and 92.7%, respectively) (P= 0.691). In contrast, the specificity of pleural fluid T-SPOT.TB (94.5%) was significantly higher than that of peripheral blood T-SPOT.TB (76.1%) (P=0.002). 2% (2/98) of pleural fluid T-SPOT.TB results were indeterminate. CONCLUSION: The diagnostic accuracy of peripheral blood T-SPOT.TB is low in high TB burden countries due to latent tuberculosis infection. Pleural fluid T-SPOT.TB is a relatively useful and supplementary test to explore pleural TB in high TB burden countries, but its diagnostic accuracy needs to be validated in further large scale research.

To discuss the correlation of tongue manifestation with the site of cerebral infarction in patients with acute cerebral infarction. From March 2008 to February 2009, 200 cases of hospitalized patients with first unilateral cerebral infarction were chosen in the Department of Neurology, Xuanwu Hospital. The correlation of different tongue color, fur texture, fur color with the site of cerebral infarction was analyzed. The site of cerebral infarction in patients were compared between different tongue color by Chisquare test (P=0.314), and further correspondence analysis demonstrated that there was correlation between red tongue and cortical-subcortical infarction group. The site of cerebral infarction in patients were compared between thick fur group and thin fur group, cortical-subcortical infarction occurred more frequently in the former (P=0.0008). The site of cerebral infarction in patients were compared between dry fur group, moist fur group and smooth fur group, correspondence analysis demonstrated there was correlation between dry fur and cortical-subcortical group. The site of cerebral infarction in the patients were compared between white fur group, white-yellow fur group and yellow fur group (P=0.010), and correspondence analysis demonstrated there was correlation between white fur and brainstem infarction; white-yellow fur has relationship with cortical infarction; subcortical infarction was weakly related with white-yellow fur; there was closer relationship between yellow fur and cortical-subcortical infarction. The change of tongue manifestation was associated with the site of cerebral infarction in patients, providing a new combining site for diagnosing cerebrovascular diseases by integrative medicine.

This paper proposes a PDM design based on the clothing plate-type, and integrates the various different tools and software used in the stages of the product life cycle. So that the data can be used unhindered by the designers, producers, managers and marketers at all stages. It solved the problem that date can only be used in a phase-specific. In this paper, we construct the two three-tier structure based on J2EE and teamcenter to adapt to the different needs of different users. And according to the requirement of PDM implementation, the problems in the process of PDM modeling are researched, Three models in the process of implementation including Plate-type database, the framework of the PDM system based on teamcenter, and server architecture are established, and the report system is developed by the research of the pick-up method of the relative information of teamcenter product. In addition, the paper integrates the existing idea of ERP. The study has some reference value to the digital garment enterprises

The traditional error resilience technique has been widely used in video coding. Many literatures have shown that with the technique's help, the video coding bitstream can been protected and the reconstructed image will get high improvement. In traditional techniques, the bitstream is segmented to packets and the encoder is reset at the beginning of each packet. The initialization will significantly reduce the coding efficiency. In this paper, we propose a new technique to improve the error resilience using concept of disharmony degree in both spatial and temporal domain. This new concept compares the pixels' difference in the spatial filed and temporal field, which helps retain the correctly decoder within the bitstream improving the quality of the reconstructed image. Experimental results show that with the new resilience technique help, the efficiency of error resilience improves the quality of reconstructed image and the detection ratio of error blocks.

On the basis of elaborating the traditional tension control, a new software design in which digital motol control and digital display used is offered. Simple and effective practical yarn tension controlling system of MCU design is adopted in its hardware. It, meantime, discussed the tension transmission system, specific quantization and the anti-interference problems. The results show that the controller has simple structure, low-cost and great performance.

We investigate the efficiency of electrical manipulation in a two-dimensional topological insulator by inspecting the electronic states of a lateral electrical potential superlattice in the system. The spatial distribution of the electron density in the system can be tuned by changing the strength of the externally applied lateral electrical superlattice potential. This provides us the information about how efficiently one can manipulate the electron motion inside a two-dimensional topological insulator. Such information is important in designing electronic devices, e.g., an electric field effect transistor made of the topological insulator. The electronic states under various conditions are examined carefully. It is found that the dispersion of the mini-band and the electron distribution in the potential well region both display an oscillatory behavior as the potential strength of the lateral superlattice increases. The probability of finding an electron in the potential well region can be larger or smaller than the average as the potential strength varies. These features can be attributed to the coupled multiple-band nature of the topological insulator. In addition, it is also found that these behaviors are not sensitive to the gap parameter of the two-dimensional topological insulator model. Our study suggests that the electron density manipulation via electrical gating in a two-dimensional topological insulator is less effective and more delicate than that in a traditional single-band semiconductor.

The recoil distance Doppler shift method has been widely used in the study of nuclear structure to determine the level lifetime and absolute transition probabilities. A capacitance servo control plunger based on this method has been successfully developed by the Nuclear Structure Group of the China Institute of Atomic Energy. Three microscopes were employed to check the parallelism and can therefore guarantee a delicate measurement of the distance between the target and the stopper. This new plunger made a successful performance in the test experiment and the measured lifetime of the 2 + →0 + transition in 78 Kr is in agreement with the previous value.

When second-harmonic generation is realized in a passive cavity, self-pulsing occurs beyond a critical threshold. We analyze the vicinity of this threshold when the input field is amplitude modulated at twice the self-pushing frequency. We determine analytically the domain of stable synchronous response.

We study a model of a far-infrared laser that was recently shown to explain a number of experimental results adequately. In a systematic way we perform linear stability analyses analytically. This determines up to four bifurcation diagrams in steady state, two of which are rather exceptional: In one case the whole branch of finite intensity is unstable, in the second case the low-intensity domain of the finite steady state is unstable. In both these cases the laser displays periodic or chaotic output without ever reaching a stable steady output.

We present a theoretical study of a multilongitudinal-mode laser with an intracavity-doubling crystal. The longitudinal modes are coupled to one another through frequency-doubling processes (because of the crystal) and through sum-frequency processes (because of the laser cavity). This leads to a mode–mode competition that significantly alters the nature of the output solutions.