ATR／FT—IR监测山梨醇发酵中山梨醇和山梨糖浓度变化

采用衰减全反射傅里叶变换红外光谱（ＡＴＲ／ＦＴ－ＩＲ）技术研究了山梨醇生产山梨糖的发酵过程。确定了基质山梨醇和产物山梨糖的特征吸收峰，其特征峰的吸光度在发酵过程中的变化直接反映了山梨醇和山梨糖浓度的变化规律。建立了特征峰吸光度与浓度的相应关系，可用于同时监测发酵过程中山梨醇和山梨糖浓度的变化，测定结果满意。     

污水处理厂污泥的资源化处理

污水处理产生的污泥中含有不同的有机物和无机污染物，其处置以减量化、稳定化、无害化和资源化为目的。污泥的土地利用、污泥消化制沼气、污泥燃料化技术、污泥的建材利用及污泥的其他几种资源化处理方法，有利于污泥处理效率的提高和环境的改善。     

磁悬浮开关磁阻电动机径向力的动态解耦控制

基于基本电磁场理论 ,给出了磁悬浮开关磁阻电动机径向力与位置的模型 .针对模型具有非线性和强耦合的特点 ,对该模型进行可逆性分析 ,从而证明该系统可逆 .应用神经网络逆系统方法 ,设计其非线性控制器 ,将原来非线性强耦合的多变量系统解耦 ,转变成 2个位置彼此无耦合的线性子系统 ,应用线性系统理论容易对这 2个子系统进行控制 .仿真表明 ,系统具有良好的静动态性能 .     

清中后期社会历史文化心态的展现——以小说《荡寇志》为例

《荡寇志》是清中后期保守士人面对西潮涌入、传统文化失落的集体性情感反应的产物,小说作者俞万春以捍卫中国传统文化的基本价值为己任,担负起了文化卫道的使命。但残酷的现实却撕碎了他加强君权、帝制,肃清内乱来重振国威的卫道美梦,小说《荡寇志》便展示了这一特定历史时期各种社会变革思潮下的社会历史文化心态。     

Description of rotational properties of the superheavy nucleus ^256,258,260Rf by projected shell model

Band structure of the Z = 104 nucleus 256Rf has been a recent research focus in nuclear physics. We performed projected shell model calculations for this and some other neighboring Rf isotopes. Specifically, we studied rotational properties of these nuclei and showed that variations in dynamic moment of inertia were sensitive to single-particle structures, which may be useful information for locating the anticipated island of stability. Electromagnetic transition properties were also calculated, and measurable quantities were predicted for further experimental test.     

DanHong Injection inhibits the development of primary abdominal aortic aneurysms in apoE knockout mice

Clinical observations indicate that DanHong Injection （DHI） can increase blood flow and reduce various syndromes in patients with cardiovascular disease. How- ever, it still needs to define the function of DHI and the involved mechanisms in details, such as the protective effect on the development of primary abdominal aortic aneurysms （AAAs）. In this study, we determined whether DHI is able to inhibit AAA in apoE knockout （apoE-/-） mice. Thirty apoE-/- male mice on high-fat diet （0.5 % cholesterol, 21% fat） were randomly divided into two groups and received i.p. injection of saline （100 μL/day） and DHI （100 μL/day）, respectively, for 16 weeks. At the end of experiment, we determined the development of atherosclerosis in en face aorta and aneurysms,pathological morphology of arterial wall, and serum lipid levels. We also determined the expression of monocyte chemoattractant protein-1 （MCP-1）, MMP-2, and MMP-9 mRNA in aortic wall using real-time RT-PCR. Our results indicated that high-fat diet induced the development of AAAs in apoE-/- mice, but the induction was totally blocked by DHI （P 〈 0.01）. The result of staining of abdominal aortic cross sections showed that DHI main- tained the collagen content in arterial wall, thereby pre- venting the animals from the development of AAA. Although DHI had little effect on serum total- and LDL- cholesterol levels, it reduced the expression of MCP-1, MMP-2, and MMP-9 mRNA in aortic wall （P 〈 0.01）. Taken together, our study suggests that DHI can inhibit the high-fat diet-induced AAA formation. The inhibitory effects may be related to the maintenance of the collagen content and inhibition of expression of AAA-related genes. Our study may suggest a new application of DHI in clinics.     

(λ,μ)-模糊粗糙子群

本文根据(λ,μ)-模糊正规子群定义了新的同余关系,由此提出了(λ,μ)-模糊粗糙子群和(λ,μ)-模糊粗糙正规子群的概念,并研究了它们的性质.     

COD测定废液中Ag2S04的回收循环利用研究

目的研究COD测定废液中Ag2SO4的回收和利用，实现资源的循环利用，提高利用效率，节约实验成本，减少环境污染。方法以COD测定废液为研究对象，将Ag2SO4通过NaCl转化为AgCl沉淀，再用Zn粒在酸性介质中进行还原，使AgCl转化为银粉；所得银粉在少量HN03存在的条件下，用浓H2S04氧化，将其转化为Ag2SO4，重新用于COD测定实验。结果通过一系列实验研究表明，有70％的银可以得到回收，所得Ag2SO4再次用于COD测定实验，标准样品的COD测定误差在许可范围之内；实际污水中COD的测定实验结果表明，Ag2SO4循环使用的测定误差平均为7．4％。结论实验证明回收的Ag2SO4可以作为COD测定实验的催化剂循环使用，可操作性良好，在节约实验成本的基础上，对于环境保护、减少污染物排放量方面有显著效果。但是COD测定结果的偏差较大，重现性有待进一步改进提高。     

The influence of home environmental factors and life style on children＇s respiratory health in Xi＇an

To assess associations between home indoor air environments and asthma,allergies and pneumonia,children aged 1–8 years were surveyed from 12 kindergartens in the city of Xi’an.2,020 questionnaires were responded with a response rate of 83.5%.The prevalences of doctor diagnosed asthma,hay fever,and pneumonia were 2.9%,3.6%,and 28.3%,respectively.Living close to a highway was a risk factor for current rhinitis(AOR 1.5,95%CI 1.2–1.8),eczema(AOR 1.7,95%CI 1.2–2.5),and diagnosed pneumonia(AOR 1.3,95%CI 1.0–1.6).Dampness problems in the home were associated with 50%–130%increases in the prevalences of asthma and allergy.Airing bed linen under sun-shine was protective,especially against rhinitis.Pet avoidance was consistently and significantly associated with asthma and allergy(AOR 1.3–2.4).Decoration of the home during children’s early life is a risk factor for current rhinitis(AOR 1.9,95%CI 1.3–2.9)and eczema(AOR 1.9,95%CI1.1–3.6).Risk factors for pneumonia were living in an apartment(AOR 1.4,95%CI 1.1–1.8),latex wall paint(AOR 1.3,95%CI 1.0–1.7),dampness(AOR 1.4–1.5),breast feeding\3 months(AOR 1.3,95%CI 1.0–1.7),never airing bed linen in sunshine(AOR 1.3,95%CI1.3–1.6),and cleaning children’s room less frequently than once per day(AOR 1.4,95%CI 1.1–1.7).This study demonstrates that home indoor environmental and life style factors may influence the health of children in Xi’an.     

Polynomial-rooting based fourth-order MUSIC for direction-of-arrival estimation of noncircular signals

A polynomial-rooting based fourth-order cumulant algorithm is presented for direction-of-arrival（DOA） estimation of second-order fully noncircular source signals, using a uniform linear array（ULA）. This algorithm inherits all merits of its spectralsearching counterpart except for the applicability to arbitrary array geometry, while reducing considerably the computation cost.Simulation results show that the proposed algorithm outperforms the previously developed closed-form second-order noncircular ESPRIT method, in terms of processing capacity and DOA estimation accuracy, especially in the presence of spatially colored noise.