Ophthalmic inpatients disease constitution and operation in Liaoning provincial key ophthalmic hospital from 2015 to 2017

AIM: To investigate the changes in constituent ratio and operation of the inpatients with ophthalmology from a key hospital in province. METHODS: A retrospective analysis was conducted including the data of medical record first sheet of patients from January 1 2015 to December 31 2017 using the hospital medical statistical analysis system. All cases were classified by clinical specialties, and the surgery quantity was counted according to the first operation method. The database was established and analyzed with Excel 2007 and SPSS 17.0. RESULTS: Total of 43 307 patients were research studied, including 21 063 males(48.64%)and 22 244 females(51.36%)with an average age of(55.0±20.4)years. The proportion of patients over 60 years old accounted for 49.92% of the total number, and this value tended to increase year by year while that decrease among patients aged 0 to 19 years. These included 31.49% of diseases of the lens, 20.61% of retino-choroidal diseases, 10.29% of glaucoma, 8.70% of strabism, 8.49% of ocular trauma, 7.44% of vitreous body disease, 6.51% of eyelid-conjunctiva and lacrimal apparatus disease, 2.69% of eye neoplasm, 1.06% of optic-nerve disease, 0.89% of sclera, corneal, iris or ciliary body disease, 1.82% of other eye disease. There was 89.40% of cases underwent an ophthalmic surgery(38 718 cases), 16 590 were operation on lens(42.85% of cases), 4 697 were intravitreal injection(12.13% of cases), 3 491 were strabismus surgery(9.02% of cases), 2 597 were glaucoma operation(6.66% of cases). CONCLUSION: Lens disease, retino-choroid disease, glaucoma, strabismus and ocular trauma were constituted the top five diseases. At present, treatment of cataract is still the main work of prevention and treatment of blindness, while retino-choroid disease is increasing rapidly and becoming the focus of prevention and treatment

catena-Poly[[pyridinecopper(II)]-μ-N-[(2-oxido-1-naphth­yl)methyl­ene]glycinato]

In the title compound, [Cu(C13H9NO3)(C5H5N)], the CuII atom is coordinated in a distorted square-pyramidal geometry, with two N and two O atoms in the basal positions and one O atom in the apical position. The apical Cu—O bond [2.3520 (16) Å] is much longer than the basal Cu—O and Cu—N bonds [1.9139 (14)–2.0136 (17) Å]. The carboxyl­ate group bridges CuII atoms, forming a zigzag chain along the a axis

Poly[(μ5-2,6-dimethyl­pyridine-3,5-dicarboxyl­ato)zinc]

In the polymeric title complex, [Zn(C9H7NO4)]n, the ZnII cation is located on a twofold rotation axis and is coordinated by five 2,6-dimethyl­pyridine-3,5-dicarboxyl­ate (mpdc) anions in a distorted ZnNO4 trigonal–bipyramidal geometry. The mpdc anion is also located on the twofold rotation axis and bridges five ZnII cations, forming the three-dimensional polymeric complex. Weak C—H⋯π inter­actions are present in the crystal structure

B0−B0ˉB^{0}-\bar{B^{0}} mixing in the U(1)XU(1)_XSSM

$U(1)_X$SSM is a non-universal Abelian extension of the Minimal Supersymmetric Standard Model (MSSM) and its local gauge group is extended to $SU(3)_C\times SU(2)_L \times U(1)_Y\times U(1)_X$. Based on the latest data of neutral meson mixing and experimental limitations, we investigate the process of $B^{0}-\bar{B^{0}}$ mixing in $U(1)_X$SSM. Using the effective Hamiltonian method, the Wilson coefficients and mass difference $\triangle m_{B}$ are derived. The abundant numerical results verify that $~v_S,~M^2_D,~\lambda_C,~{\mu},~M_2,~\tan{\beta},~g_{YX},~M_1$ and $~\lambda_H$ are sensitive parameters to the process of $B^{0}-\bar{B^{0}}$ mixing. With further measurement in the experiment, the parameter space of the $U(1)_X$SSM will be further constrained during the mixing process of $B^{0}-\bar{B^{0}}$

Effect of Buyanghuangwu recipe on exhausted mice skeletal muscle mitochondrial ultrastructure and function

目的  通过建立小鼠游泳运动疲劳模型，探讨补阳还五汤（BYHWT）对运动性疲劳小鼠骨骼肌线粒体超微结构及蛋白AMPK表达的影响。方法  实验选用健康雄性清洁级SD小鼠48只，随机均分为对照组和补阳还五汤低、中、高剂量组，每组12只。常规饲料喂养外，BYHWT低、中、高剂量组分别给予12.5ｇ/kg、25.0ｇ/kg、50.0ｇ/kg的BYHWT灌胃，对照组给予等量生理盐水，连续给药7天，采用负重游泳实验建立小鼠力竭模型。用透射电镜观察骨骼肌细胞线粒体超微结构，Real-time PCR法测定骨骼肌AMPK蛋白表达。结果  运动性疲劳小鼠骨骼肌线粒体数量明显减少，线粒体空泡样变，嵴断裂显著，核染色质浓缩边集、核缩小、核膜增厚，而补阳还五汤药物干预后，骨骼肌线粒体形态趋于正常；模型组大鼠骨骼肌组织AMPK蛋白表达水平较正常对照组、补阳还五汤组明显降低，差异有显著性（P＜0.05），而正常对照组和补阳还五汤组间差异无显著性（P＞0.05）。结论  补阳还五汤具有一定的抗运动性疲劳作用，其机制可能与其减少线粒体损伤，增强线粒体功能，增加骨骼肌AMPK蛋白表达有关。Objective: Discusses the influence that Buyanghuangwu recipe for exercise-induced fatigue mice skeletal muscle mitochondrial ultrastructure and the influence of AMPK protein expression, by establishing mice swimming exercise fatigue model. Methods: 48 SD mice of healthy male at clean level were chose to do experiments, randomly divided into control group and BYHWR low, medium and high group, each group of 12. Regular feed, BYHWR low, medium and high group were given 12.5g/kg, 25.0g/kg, 50.0g/kg for BYHWR to fill the stomach, the control group given amount of normal saline, administered continuously for 7d, weight loading swimming experiment is adopted to establish the mice model of exhaustion. Skeletal muscle cells are observed by transmission electron microscope mitochondria ultrastructure, Real-time PCR method skeletal muscle AMPK protein expression. Results: The number of mitochondria in skeletal muscle of exercise-induced fatigue mice decreased significantly, mitochondrial vacuole degeneration, rupture of mitochondria were obvious, nucleus chromatin concentrated edge set, nucleus contracted and nuclear membrane thickened. After intervention of BYHWR, skeletal muscle The expression of AMPK protein in the skeletal muscle of the model group was significantly lower than that of the normal control group and the group of BYHWR group (P<0.05). The expression of AMPK protein in the normal control group and BYHWR group was no significant difference between the two groups (P>0.05). Conclusion: BYHWR group has certain resistance exercise fatigue, and its mechanisms potentially increase AMPK protein expression in skeletal muscle, reduce mitochondrial damage, and strengthen the function of mitochondria

Research on Chloride Penetration Resistance of Phosphoaluminate Cement Concrete

The chloride penetration resistance of phosphoaluminate cement (PAC) concrete was investigated in this study. The effects of mixture proportioning parameters, including cement content, water–cement ratio (w/c), and superplasticizer content on chloride ion penetration resistance of PAC concrete were investigated by the rapid chloride migration test (RCM). The result shows that the increase of cement content and the decrease of w/c can reduce the coefficient of chloride ion penetration of PAC concrete at a certain range. Moreover, the penetration of chloride ion can be declined effectively when polycarboxylate superplasticizer is employed. The PAC concrete exhibited better chloride penetration resistance compared with normal Portland cement (PC) concrete prepared with the same mixture proportioning parameters. This is due to the fact that the hydration mechanism and the hydration products of PAC concrete are different from that of PC concrete

Theoretical Corrections of RDR_D and RD∗R_{D^*}

$R_{D^{(*)}}$ is the ratio of branching ratio $\overline{B} \rightarrow D^{(*)}\tau\overline{\nu}_{\tau}$ to $\overline{B} \rightarrow D^{(*)}l\overline{\nu}_{l}$. There is a gap of $2\sigma_{exp}$ or more between its experimental value and the prediction under the standard model(SM). People extend the MSSM with the local gauge group $U(1)_X$ to obtain the $U(1)_X$SSM. Compared with MSSM, $U(1)_X$SSM has more superfields and effects. In $U(1)_X$SSM, we research the decays $\overline{B} \rightarrow D^{(*)}l\overline{\nu}_{l}$ and calculate $R_{D^{(*)}}$. The obtained numerical results of $R_{D^{(*)}}$ are further corrected under $U(1)_X$SSM, which is much better than the SM predictions. After correction, the theoretical value of $R_{D^{(*)}}$ can reach in one $\sigma_{exp}$ range of the averaged experiment central value

The semi-leptonic form factors of Λb→Λc\Lambda_{b}\to\Lambda_{c} and Ξb→Ξc\Xi_{b}\to\Xi_{c} in QCD sum rules

In this work, the full leading order results of the form factors for $\Xi_{b}\to\Xi_{c}$ and $\Lambda_{b}\to\Lambda_{c}$ are obtained in QCD sum rules. Contributions from up to dim-5 have been considered. For completeness, we also study the two-point correlation function to obtain the pole residues of $\Xi_{Q}$ and $\Lambda_{Q}$, and higher accuracy is achieved. For the three-point correlation function, since stable Borel regions can not be found, about $20\%$ uncertainties are introduced for the form factors of $\Xi_{b}\to\Xi_{c}$ and $\Lambda_{b}\to\Lambda_{c}$. Our results for the form factors are consistent with those of the Lattice QCD within errors.Comment: 17 pages, 5 figure

Effect of ecological restoration programs on dust concentrations in the North China Plain: a case study

In recent decades, the Chinese government has made a great effort in initiating large-scale ecological restoration programs (ERPs) to reduce the dust concentrations in China, especially for dust storm episodes. Using the Moderate Resolution Imaging Spectroradiometer (MODIS) land cover product, the ERP-induced land cover changes are quantitatively evaluated in this study. Two obvious vegetation protective barriers arise throughout China from the southwest to the northeast, which are well known as the "Green Great Wall" (GGW). Both the grass GGW and forest GGW are located between the dust source region (DSR) and the densely populated North China Plain (NCP). To assess the effect of ERPs on dust concentrations, a regional transport/dust model (WRF-DUST, Weather Research and Forecast model with dust) is applied to investigate the evolution of dust plumes during a strong dust storm episode from 2 to 8 March 2016. The WRF-DUST model generally performs reasonably well in reproducing the temporal variations and spatial distributions of near-surface [PMC] (mass concentration of particulate matter with aerodynamic diameter between 2.5 and 10 mu m) during the dust storm event. Sensitivity experiments have indicated that the ERP-induced GGWs help to reduce the dust concentration in the NCP, especially in BTH (Beijing, Tianjin, and Hebei). When the dust storm is transported from the upwind DSR to the downwind NCP, the [PMC] reduction ranges from -5 to -15% in the NCP, with a maximum reduction of -12.4% (-19.2 mu gm(3)) in BTH and -7.6% (-10.1 mu g m(3)) in the NCP. We find the dust plumes move up to the upper atmosphere and are transported from the upwind DSR to the downwind NCP, accompanied by dust decrease. During the episode, the forest GGW is nonsignificant in dust concentration control because it is of benefit for dry deposition and not for emission. Conversely, the grass GGW is beneficial in controlling dust erosion and is the dominant reason for [PMC] decrease in the NCP. Because the air pollution is severe in eastern China, especially in the NCP, and the contribution of dust episodes is significant, the reduction of dust concentrations will have important effects on severe air pollution. This study illustrates the considerable contribution of ERPs to the control of air pollution in China, especially in springtime