外直肌超长量后徙术治疗大角度外斜视的疗效评价

背景临床上矫正超过50。的大角度外斜视时往往需对3条或4条水平直肌进行手术，以避免因外直肌超长量后徙（〉7Inm）引起的眼球外转受限。但研究表明，超长量外直肌后徙可有效矫正大角度外斜视，且术后并不出现眼球明显外转受限。这个结果仍有待临床上进行验证。目的观察双眼外直肌超长量后徙或合并非主导眼内直肌缩短对大角度外斜视的矫正效果。方法采用系列病例观察法对2013年5月至2014年10月在天津市眼科医院行双眼外直肌超常量后徙术或合并非主导眼内直肌缩短术的间歇性或恒定性大角度外斜视患者51例的治疗效果进行分析，其中29例为间歇性外斜视，22例为恒定性外斜视。所有患者均接受术前及术后眼前节、眼底、眼球运动和双眼视功能检查，采用三棱镜加遮盖法测量斜视角大小。依据病史、眼球运动、知觉状态和斜视角度数对患者行个体化手术治疗，术中结合可调整缝线技术，行双眼外直肌超长量后徙术或合并非主导眼内直肌缩短术。术后随访时间均超过6个月，比较术眼术前和术后眼位变化、眼球运动情况以及双眼知觉功能。结果行双眼外直肌超长量后徙术者33例，双眼外直肌超长量后徙术合并非主导眼内直肌缩短术者18例。术前患者视远（5111）斜视度为-52△-120△，平均（-70．57±16．46）△；视近（33cm）斜视度为-55△—-130△，平均（-75．65±16．14）△。左眼外直肌后徙8～15mm，平均（11．17±1．67）mm，右眼外直肌后徙9～15mm，平均（11．28±1．62）mm，非主导眼内直肌缩短3～6mm。末次随访时患者视远斜视度为＋4△～-14△，平均（～3．45±4．20）△；视近斜视度为＋4△～-14△，平均（-5．49±3．96）△，其中41例术后眼球正位，占80．4％，10例欠矫，未发现过矫者。32例患者术后立体视较术前改善，其中术前无立体视的27例中18例术后获得不同程度的立体视。无-例患者出现眼球运动障碍。结论双眼外直肌超长量后徙术或合并非主导眼内直肌缩短术可有效治疗大角度外斜视，可减少需要手术的眼外肌数目，术后未发现眼球运动障碍。

Effect of Microbial Inoculum Fertilizer on the Growth and Yield of Super Hybrid Rice

The research designed four application quantities of 0, 2 250, 4 500 and 6 750 g/hm2 based on Liangyou No. 959 to explore the effects of microbial inocu- lure fertilizer on growth and yield of super hybrid rice. The results indicate that the treatment with traditional fertilizers and 4 500 g/hm2 HYT microbial inoculum fertilizer performed the best, where average number of tiller was 2.4 more than that of the control; the number of effective ear was 11.05% higher; yield increased by 10.3%. These have demonstrated that microbial inoculum fertilizer is of great value in pro- motion on super hybrid rice production.

Giant Vortex States in a Long Superconducting Cylinder with a Hole in Center

We have theoretically studied the nucleation of superconductivity in doubly connected superconductors in the form of long superconducting cylinders. The giant vortex states are investigated with the nonlinear Ginzburg-Landau theory. The solutions of Ginzburg-Landau equations are solved numerically with relaxation method. The quantum size effect is clearly shown through the calculation of free energy.

Effects of Nitrogen Fertilization on Growth and Development and Nitrogen Utilization of Japonica Super Rice

With the super japonica rice Shennong 265 as the tested material, the effects of different nitrogen application amounts and basic tiller fertilizer(BTF)-ear granule fertilizer(EGF) ratios on the yield and nitrogen utilization characteristics of Shennong265 were investigated. The results showed that when the BTF-EGF ratio was 8:2 or 7:3, the yield of Shennong 265 increased with the increased nitrogen application amount; when the BTF-EGF ratio was 6:4, medium nitrogen level was more conducive to improving the yield of Shennong 265; under the condition of same BTF-EGF ratio, with the increased nitrogen application amount, the total nitrogen uptake increased, and the nitrogen physiological efficiency and harvest index decreased. At low and medium nitrogen levels, the higher the proportion of EGF was, the higher the yield, total nitrogen uptake and nitrogen recovery ratio were; at high nitrogen level, the BTF-EGF ratio of 7:3 was more favorable; at the same nitrogen level, the higher the proportion of EGF was, the lower the nitrogen physiological efficiency and harvest index were. Under conditions of nitrogen application level of 255 kg/hm^2 and BTF-EGF ratio of 7:3, the dry matter accumulation in the leaves, stems and spikes of Shennong265 was higher in the late growth period. Higher effective panicle number and grain number per panicle led to higher yield(9581.5 kg/hm^2, 2.4%-20.1% higher than those in the other treatment groups) and higher nitrogen use efficiency.

Simulation and Error Analysis of Electro-optic Sampling Measurement of Ultrashort Electron Beam Bunch Length

For the development of high energy physics,it is needed to improve the performance of the relativistic electron bunch.The measurement of the ultrashort relativistic electron pulse becomes one of the key technologies.The electro-optic sampling measurement of relativistic electron pulses is a promising method.This method is nondestructive, non-intrusive,and real-time monitoring.Distance and angles of the reference frames will cause system deviations.In this paper these system deviations are analyzed by simulation.It provides a reference for the experiment.

NbN superconducting nanowire single photon detector with efficiency over 90% at 1550 nm wavelength operational at compact cryocooler temperature

The rapid development of superconducting nanowire single-photon detectors over the past decade has led to numerous advances in quantum information technology. The record for the best system detection efficiency at an incident photon wavelength of 1550 nm is 93%. This performance was attained from a superconducting nanowire single-photon detector made of amorphous WSi; such detectors are usually operated at sub-Kelvin temperatures. In this study, we first demonstrate superconducting nanowire single-photon detectors made of polycrystalline NbN with system detection efficiency of 90.2% for 1550-nm-wavelength photons at2.1 K, accessible with a compact cryocooler. The system detection efficiency saturated at 92.1% when the temperature was lowered to 1.8 K. We expect the results lighten the practical and high performance superconducting nanowire single-photon detectors to quantum information and other high-end applications.