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Aim. To elaborate on the relationship between work engagement, perceived organizational support, and the turnover intention of nurses by analysing some potential moderators. Background. Nurses’ turnover intention is negatively impacted by their level of work engagement and perceptions of organizational support. However, it is challenging to reach a consistent conclusion. Methods. Data were acquired from six electronic databases. Each study was evaluated using the quality assessment tool for cross-sectional studies of the Agency for Healthcare Research and Quality (AHRQ). STATA 15.0 was used to analyse the data, and a random effects model was used. The groups that included two or more studies were added to the moderator analysis. Results. A total of 40 study articles involving 23,451 participants were included. The turnover intention of nurses was inversely associated with work engagement (coefficient: −0.42) and perceived organizational support (coefficient: −0.32). A substantial moderating role was played by cultural background, economic status, working years, and investigation time (P

Metachromatic Leukodystrophy (MLD) is a rare autosomal recessive disease, which is caused by mutations in the arylsulfatase A (ARSA) gene. The ARSA gene is located on chromosome 22q13, containing eight exons. According to the age of onset, MLD can be divided into late infantile type, juvenile type, and adult type. Adult MLD has an insidious onset after the age of 16 years. Additionally, intellectual as well as behavioral changes, such as memory deficits or emotional instability, are commonly the first presenting symptoms. There is a study that reported an adult-onset MLD manifested cognitive impairment progressively due to compound heterozygous mutations of NM_000487: c.[185_186dupCA], p.(Asp63GlnfsTer18), and NM_000487: c.[154G>T], p.(Gly172Cys), rs74315271 in the ARSA gene, finding that the c.[154G>T], p.(Gly172Cys) is a novel missense mutation. Brain magnetic resonance imaging (MRI) revealed symmetrical demyelination of white matter. The activity of ARSA enzymatic in leukocytes decreased. Nerve conduction studies displayed that evidence of polyneuropathy was superimposed upon diffuse, uniform demyelinating, and sensorimotor polyneuropathy. Family genes revealed that each family member carried one of two heterozygous mutant genes. She has been discharged and is currently being followed up. This study found a compound heterozygous mutation in the ARSA gene associated with MLD and identified a novel missense mutation NM_000487: c.[154G>T], p.(Gly172Cys), rs74315271. This will provide a critical clue for prenatal diagnosis of the offspring in this family, and expand the mutation spectrum of MLD-related ARSA.

Antibody-LGI1 limbic encephalitis (LGI1-Ab LE) is an anti-neuronal surface antigen-related autoimmune encephalitis. we report three cases of LGI1-Ab LE, describe the characteristics of clinical manifestation, course of evolution, imaging manifestation and treatment outcomes.Data from patients diagnosed with LGI1-Ab LE in the Second Hospital, Hebei Medical University, from June 2016 to July 2017, were retrospectively collected and analyzed. We followed up the patients for 90 days.Two of the three patients were females, the average age of onset is 53 years old. Epilepsy is the most common clinical manifestations, and one of patients developed faciobrachial dystonic seizures (FBDS), which was recently described as a characteristic feature of LGI1-Ab LE. All patients had cognitive impairment in different degrees and abnormal signal of hippocampus in cranial MRI. All serum LGI1 antibodies were positive, whereas one LGI1 antibodies of CSF were negative. All patients accepted first-line immune therapy and had a good outcome.LGI1-Ab LE, which is an autoimmune disease, is rare clinically and mostly nonparaneoplastic. We suggest that LGI1-Ab LE be considered in any patient with acute or subacute onset, cognitive dysfunction , various types of seizures, accompanied by mental disorders and hyponatremia, MR showed the involvement of the limbic system. It is necessary to have LE-related antibodies tested. Early immunotherapy can significantly improve the patient's overall prognosis. At the same time, we should also pay attention to the possibility of potential tumors.

In this article, we study the ground states and the first radial excited states of the flavor antitriplet heavy baryon states $\Lambda_Q$ and $\Lambda_Q$ with the spin-parity $\Lambda_Q$ by carrying out operator product expansion up to vacuum condensates of dimension $\Lambda_Q$ in a consistent way. We observe for the first time that the higher dimensional vacuum condensates play an important role, and obtain very stable QCD sum rules with variations of the Borel parameters for the heavy baryon states. The predicted masses $\Lambda_Q$ , $\Lambda_Q$ , and $\Lambda_Q$ for the first radial excited states $\Lambda_Q$ , $\Lambda_Q$ , and $\Lambda_Q$ , respectively, are in excellent agreement with the experimental data and support assigning $\Lambda_Q$ , $\Lambda_Q$ , and $\Lambda_Q$ to be the first radial excited states of $\Lambda_Q$ , $\Lambda_Q$ , and $\Lambda_Q$ , respectively. The predicted mass $\Lambda_Q$ for $\Lambda_Q$ can be confirmed using experimental data in the future.

In this article, we firstly derive two QCD sum rules QCDSR I and QCDSR II which are respectively used to extract observable quantities of the ground states and the first radially excited states of D-wave vector $��$ and $��$ mesons. In our calculations, we consider the contributions of vacuum condensates up to dimension-7 in the operator product expansion. The predicted masses for $1^{3}D_{1}$ $��$ meson and $2^{3}D_{1}$ $��$ meson are consistent well with the experimental data of $��$($1700$) and $��$($2170$). Besides, our analysis indicates that it is reliable to assign the recent reported $Y$($2040$) state as the $2^{3}D_{1}$ $��$ meson. Finally, we obtain the decay constants of these states with QCDSR I and QCDSR II. These predictions are helpful not only to reveal the structure of the newly observed $Y$($2040$) state but also to establish $��$ meson and $��$ meson families.

In this article, we study the ground states and the first radial excited states of the flavor antitriplet heavy baryon states $\Lambda_Q$ and $\Xi_Q$ with the spin-parity $J^P={1\over 2}^{+}$ by carrying out the operator product expansion up to the vacuum condensates of dimension $10$ in a consistent way. We observe that the higher dimensional vacuum condensates play an important role, and obtain very stable QCD sum rules with variations of the Borel parameters for the heavy baryon states for the first time. The predicted masses $6.08\pm0.09\,\rm{GeV}$, $2.78\pm0.08\,\rm{GeV}$ and $2.96\pm0.09\,\rm{GeV}$ for the first radial excited states $\Lambda_b(\rm 2S)$, $\Lambda_c(\rm 2S)$ and $\Xi_c(\rm 2S)$ respectively are in excellent agreement with the experimental data and support assigning the $\Lambda_b(6072)$, $\Lambda_c(2765)$ and $\Xi_c(2980/2970)$ to be the first radial excited states of the $\Lambda_b$, $\Lambda_c$ and $\Xi_c$, respectively, the predicted mass $6.24\pm0.07\,\rm{GeV}$ for the $\Xi_b(\rm 2S)$ can be confronted to the experimental data in the future., Comment: 15 pages, 17 figures

In this article, we illustrate how to calculate the hadronic coupling constants of the pentaquark states with the QCD sum rules based on rigorous quark-hadron quality, then study the hadronic coupling constants of the lowest diquark-diquark-antiquark type hidden-charm pentaquark state with the spin-parity $J^P={\frac{1}{2}}^-$ in details, and calculate the partial decay widths. The total width $\Gamma(P_c)=14.32\pm3.31\,\rm{MeV}$ is compatible with the experimental value $\Gamma_{P_c(4312)} = 9.8\pm2.7^{+ 3.7}_{- 4.5} \mbox{ MeV}$ from the LHCb collaboration, and favors assigning the $P_c(4312)$ to be the $[ud][uc]\bar{c}$ pentaquark state with the $J^P={\frac{1}{2}}^-$. The hadronic coupling constants have the relation $|G_{PD^-\Sigma_c^{++}}|= \sqrt{2}|G_{P\bar{D}^0\Sigma_c^+}|\gg |G_{P\bar{D}^0\Lambda_c^+}|$, and favor the hadronic dressing mechanism. The $P_c(4312)$ maybe have a diquark-diquark-antiquark type pentaquark core with the typical size of the $qqq$-type baryon states, the strong couplings to the meson-baryon pairs $\bar{D}\Sigma_c$ lead to some pentaquark molecule components, and the $P_c(4312)$ maybe spend a rather large time as the $\bar{D}\Sigma_c$ molecular state., Comment: 27 pages, 9 figures

In this article, we study the ground states and the first radial excited states of the flavor antitriplet heavy baryon states $��_Q$ and $��_Q$ with the spin-parity $J^P={1\over 2}^{+}$ by carrying out the operator product expansion up to the vacuum condensates of dimension $10$ in a consistent way. We observe that the higher dimensional vacuum condensates play an important role, and obtain very stable QCD sum rules with variations of the Borel parameters for the heavy baryon states for the first time. The predicted masses $6.08\pm0.09\,\rm{GeV}$, $2.78\pm0.08\,\rm{GeV}$ and $2.96\pm0.09\,\rm{GeV}$ for the first radial excited states $��_b(\rm 2S)$, $��_c(\rm 2S)$ and $��_c(\rm 2S)$ respectively are in excellent agreement with the experimental data and support assigning the $��_b(6072)$, $��_c(2765)$ and $��_c(2980/2970)$ to be the first radial excited states of the $��_b$, $��_c$ and $��_c$, respectively, the predicted mass $6.24\pm0.07\,\rm{GeV}$ for the $��_b(\rm 2S)$ can be confronted to the experimental data in the future., 15 pages, 17 figures

Hyperuricemia is associated with the development of chronic kidney disease. Epithelial-to-mesenchymal transition (EMT) induced by hyperuricemia is blamed for initiation of renal fibrosis, which is one of the main characters of hyperuricemic nephropathy. Qi-Zhu-Xie-Zhuo-Fang (QZXZF) has been employed clinically for many years to treat patients with hyperuricemic nephropathy, but the mechanism underlying the therapeutic potential remains unclear. In the present study, QZXZF was applied to rats treated with adenine (100mg/kg) and potassium oxonate (300mg/kg) and biochemical estimations, morphology and immunohistochemistry were performed to investigate whether QZXZF can improve hyperuricemia induced renal fibrosis and to explore the possible mechanisms. We found QZXZF significantly reduced serum uric acid, cystatinC and hepatic xanthine oxidase (XO) activities, meanwhile improved renal histopathologic changes of hyperuricemic nephropathy rats. Furthermore, QZXZF not only substantially decreased the protein levels of fibronectin and Collagen I but also downregulated E-cadherin and upregulated α-SMA in the kidneys of hyperuricemic nephropathy rats. In conclusion, QZXZF reduced serum uric acid levels and protected kidney against fibrosis in potassium oxonate and adenine induced hyperuricemic nephropathy rats. The mechanism might be associated with the inhibition of hepatic XO activity and the renal epithelial-to-mesenchymal transition.

Bi-dimensional empirical mode decomposition can decompose the source image into several Bi-dimensional Intrinsic Mode Functions. In the process of image decomposition, interpolation is needed and the upper and lower envelopes will be drawn. However, these interpolations and the drawings of upper and lower envelopes require a lot of computation time and manual screening. This paper proposes a simple but effective method that can maintain the characteristics of the original BEMD method, and the Hermite interpolation reconstruction method is used to replace the surface interpolation, and the variable neighborhood window method is used to replace the fixed neighborhood window method. We call it fast bi-dimensional empirical mode decomposition of the variable neighborhood window method based on research characteristics, and we finally complete the image fusion. The empirical analysis shows that this method can overcome the shortcomings that the source image features and details information of BIMF component decomposed from the original BEMD method are not rich enough, and reduce the calculation time, and the fusion quality is better.

The first imported Middle East respiratory syndrome (MERS) case in China was identified in May 2015. We determined the kinetics of antibody (IgG and IgM) and neutralizing antibodies against MERS-coronavirus (MERS-CoV) in this case before discharge. Moreover, no seroconversion was found among 53 close contacts by anti-MERS IgG antibody enzyme-linked immunosorbent assay (ELISA) of paired serum samples. These findings suggest that neither community nor nosocomial transmission of MERS-CoV occurred in China.

In the fog computing environment, the periodic sequence can provide sufficient authentication code and also reduce the power consumption in the verification. But the periodic sequence faces a known full-cycle attack threat in fog computing. This paper studies the 2-adic complexity attack ability of the periodic balance sequence in the fog computing environment. It uses the exponential function as a new approach to study the 2-adic properties of periodic balance sequence and presents that the 2-adic complexity of the periodic balanced sequence is not an attacking threat when used in fog computing.

The arithmetic correlation has been studied in the binary sequences and Boolean functions, the ideal arithmetic correlation sequences can be used in mobile communication authentication with their properties, such as the large number and the independent certification. In this paper, a new class of no-linear Boolean functions are described and their arithmetic correlation are analyzed. And based the no-linear Boolean functions, we give a simple ID-based remote mutual authentication in a multi-user mobile could environment by using the arithmetic cross-correlation.

In order to measure the isotopic ratio of actinides, the upgrade of the accelerator mass spectrometry system at the Center for Isotopic Research on Cultural and Environmental heritage at the Second University of Naples, Italy, was performed. The beam emittance of 238U and the isotopic abundance sensitivity of 236U were measured on the present beam line. Utilizing a 16-strip silicon detector, the sensitivity of 236U/238U≈1×10−11 was obtained.

In order to measure the isotopic ratio of actinides, the upgrade of the accelerator mass spectrometry system at the Center for Isotopic Research on Cultural and Environmental heritage at the Second University of Naples, Italy, was performed. The beam emittance of 238U and the isotopic abundance sensitivity of 236U were measured on the present beam line. Utilizing a 16-strip silicon detector, the sensitivity of 236U/238U≈1×10 −11 was obtained.

The nonlinear interaction in the coherent structure in the CT-6B tokamak plasma turbulence is studied by using the wavelet bicoherence technique. The results show that the coherent structure mainly results from the nonlinear interaction between waves.

A gas-filled time-of-flight (GF-TOF) detector has been built and developed to improve the ability of isobaric identification in accelerator mass spectrometry (AMS) measurements, and a time resolution (without gas filled) of better than 350 ps is achieved. The GF-TOF detector is tested by means of measuring a standard AgCl (36Cl/Cl = 7.6×10−9g/g) sample with the 36Cl ion energy of 64, 49 and 33 MeV, respectively. 36Cl and 36S particles were successfully separated in the TOF spectra output from the GF-TOF detector. The comparison between the gas-filled time-of-flight method and the ΔE−E method is described. Some results relative to the GF-TOF method are given as well.

The man-made calcium isotope 41Ca is an ideal tracer for the study of calcium metabolism. We represent the first application of accelerator mass spectrometry (AMS) measurement of 41Ca tracer in China. The technique is being applied to the research field of cell messenger at the China Institute of Atomic Energy (CIAE). The sample preparation methods and the AMS measurements are discussed and some interesting results are presented.

This article makes a study on optical fiber sensor with metal nanostructure based on the properties of optical fiber sensing technology and the optical performances of metal nanoparticles. Moreover, star-sha ped gold nanoparticles which mean diameter is from 60 to 80 nm were obtained by the Seed-mediated growth method. Then these nanoparticles were used as the sensitive part of the optical fiber sensor and were modified to the tapered fiber surface as a surface Raman enhanced substrate. Finally, transmission spectrum and Raman spectra were carried out in different concentration alcohol solution. The experiments show that the extinction spectra of gold nanoparticles is very sensitive to the dielectric properties of the surrounding medium and the nanoparticles fiber-taper-excited SERS (Surface-enhanced Raman scattering) substrates exhibit a significant enhancement of the Raman spectra.

Semantic integration is a key technology of heterogeneous database interoperation at present. This article proposes a method of building heterogeneous database integration framework which is fairly complete and based on ontology by the advantage of ontology semantic integration. The article puts forward semantic mapping approach based on semantic similarity of the concept name, property type and instance similarity to focus on solving the mapping problem of the semantic integration.

The performances of the p-type heavily doped amorphous layer and the intrinsic amorphous layer are optimized for the n-type crystalline silicon based HIT solar cells by controlling the PECVD parameters. The experiments show that the high-conductivity p-type amorphous silicon layer with a comparatively wide optical band gap will be obtained when the gas phase doping concentration (B2H6/SiH4) is set around 1.1%. The substrate temperature and the RF power should be optimized at 180°C and 100W respectively to obtain a wide optical band gap and a small deposition rate for the intrinsic a-Si layer in the HIT solar cells.

The transparent nanometer ZnO thin films were deposited on glass substrate by radio frequency (RF) in situ magnetron sputtering at room temperature, and then annealed at different temperatures by rapid thermal process. After that, the transparency, crystal structure and surface morphology characteristics of ZnO thin films were analyzed by ultraviolet-visible spectrophotometer UV-2550, X-ray diffraction (XRD) and scan electron microscope (SEM). The influence of annealing temperature on the film characteristics was investigated. The results show that after annealing, ZnO thin films have only a diffraction peak at (002) direction (located around 34.2°), excellent c-axis orientation, highly transparent with about 85% optical transmission in the visible spectrum 400-800nm, even over 90% at some waveband. They have excellent crystal structure, good crystallinity, and the grain size of the films was over 30 nm. Compared with ZnO thin films without annealing, the films annealed are better in crystallinity quality. It is a good candidate for transparent conductivity electrode of solar cells.

Control of the spatiotemporal patterns near the codimension-three Turing—Hopf—Wave bifurcations is studied by using time-delayed feedback in a three-variable Brusselator model. Linear stability analysis of the system shows that the competition among the Turing-, Hopf- and Wave-modes, the wavenumber, and the oscillation frequency of patterns can be controlled by changing the feedback parameters. The role of the feedback intensity Pu played on controlling the pattern competition is equivalent to that of Pw, but opposite to that of Pv. The role of the feedback intensity Pu played on controlling the wavenumber and oscillation frequency of patterns is equivalent to that of Pv, but opposite to that of Pw. When the intensities of feedback are applied equally, changing the delayed time could not alter the competition among these modes, however, it can control the oscillation frequency of patterns. The analytical results are verified by two-dimensional (2D) numerical simulations.

Different cobalt‐containing samples of Fe‐Cr‐Co alloys in the same heat‐treatment conditions are investigated by means of Mossbauer effect (ME), ferromagnetic resonance (FMR),and magnetic measuring techniques. The magnetic phase, the reverse‐magnetization mechanism, and the influence of cobalt content of these alloys on their PM properties are analyzed and discussed.(AIP)

Accelerator mass spectrometry (AMS) is an ultrasensitive technique for measuring long-lived actinides, e.g., 236U, 237Np and Pu isotopes. In order to improve the detection limit for actinides abundance, and to increase the detection efficiency in actinides AMS measurement, a 16-strip silicon detector was used to identify actinides at the Center for Isotopic Research on Cultural and Environmental heritage in Caserta, Italy. The sensitivity of 236U/238U was 1 × 10-11 by special resolution and 5.0 × 10-12 by time resolution. The pulse height defect of 236U in an ion-implanted silicon detector in the low-energy range with 17.26 MeV is presented.