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Chitosan had been modified by polyacrylate sodium, glularaldehyde, and NaBH4, respectively, which afforded three kinds modified chitosan: polyacrylate sodium modified chitosan (CIS- PA4) chitosan bead and pentamethylene diamido crosslinked chitosan bead (CTSB- G- Hy). The adsorption properties of CTS-CTSB and CTSB-G-Hy were studied by L25(56) orthogonal experimental design. They show high adsorption activities for Pb2+ in solution. The highest removal efficiency of Pb2+ for CTS-PA4, CTSB and CTSB-G-Hy is 94%, 96% and 93%, respectively. The results showed the adsorption property of CTSB is the highest. The CTSB- G- Hy has good mechanical property, acid-resistance and alkali-resistance.

第二部分壳聚糖的改性及其对水溶液中铅离子的吸附性能研究以壳聚糖为原料制备了三种改性吸附剂——聚丙烯酸钠改性壳聚糖(CTS——PA_4)、珠状壳聚糖凝胶树脂和戊二氨交联珠状壳聚糖凝胶树脂,着重考察了CTSB—G—Hy的制备条件,并考察了三种吸附剂吸附6.3mg/L铅离子水溶液中铅的最佳使用条件,结果表明对CTS—PA_4而言当pb~(2+)溶液的pH在4~6.5之间,吸附剂用量为5g/L,吸附时间为1h时pb~(2+)去除率高于94%,CTS—PA_4可在酸性条件下使用,在碱性条件下依然有效但处理效果较差;CTSB对pb~(2+)具有很好的吸附能力吸附剂用量为5g/L,吸附时间为1h时处理效果极佳,pb~(2+)去除率高于96%;CTSB—G—Hy对pb~(2+)具有一定的吸附能力,吸附剂用量为3g/L,吸附时间为1.5h时处理效果最佳,Pb~(2+)去除率高于93%,而且CTSB—G—Hy的机械强度高,耐酸碱性强,可在较宽的pH范围内使用。

Some solvability conditions, including sublinear ,subquadralic and superquadratic, and the corresponding existence results are summed up for periodic solutions of the second order Hamiltonian systems obtained by using the minimax methods.

本文综述了用极小极大方法得到的关于二阶Hamilton系统周期解的可解性条件及相关结果,包括次线性条件,次二次条件和超二次条件等方面的近期结果。

Digestion conditions, working conditions of atomic fluorescence spectrometer and conditions of hydride generation reaction were studied. Methods for the reduction from Se to Se by using boiling water bath and UV were compared. The amount of sulfamic acid for the elimination of the interference of nitrogen oxides was also investigated.

探讨了消解条件、原子荧光光度计工作条件及氢化物发生反应条件,对比沸水浴加热和紫外光加热2种将Se还原为Se的方法,研究氨基磺酸消除氮氧化物干扰的最佳条件

In this paper, first, the unified form of W is presented on the condition of linear unhomogeneous boundary condition under stable condition.

从稳定条件下的线性非齐次边界条件出发,给出了w的统一形式,进而将其推广到非稳定条件下的非齐次边界条件,得到w的一般的结果。

Mark J1C at theintersection of the two lines.It is necessary to use a new standard specimen to do J-integral test. The dimension of standard specimen is 10 mnx20 nsnxiOO mm .The results from this specimen are satisfied with the condition of validness of J-integral as well as the condition of plane-strain. The reason is explained.

通过对J积分测试中的有效性条件及平面应变条件的分析,提出用尺寸为10mm×20mm×100mm的试样作为标准试样进行J积分试验,该试样既能满足有效性条件又能满足平面应变条件,并解释了其原因。

And the Vocalise is included.Chapter Three:The terms to bring forth thymogeny and features in Rakhmaninov "Vocalise" This part discusses the terms to bring forth thymogeny in "Vocalise" from two aspects that are the external terms such as the political environment,music culture position and music aesthetics condition and the interior terms such as Rakhmaninov's own music style and emotion.

第三部分:拉赫玛尼诺夫《练声曲》情感性产生的条件及表现该部分先从拉赫玛尼诺夫《练声曲》产生时的政治环境、音乐文化状况、音乐美学环境等外部条件和拉赫玛尼诺夫的个人音乐风格、音乐情怀这一内部条件两方面论述了《练声曲》产生情感性的条件

The results showed that low temperature, high content of salt and acidic condition inhibited ammonifiers growth, and alkalescent condition showed little effect on ammonifiers. Ammonifying bacteria in Suzhou Creek could not use inorganic nitrogen and carbamide as nitrogen source. Additional carbon source have little effect on ammonifiers growth....

结果表明,低温、高盐度和酸性条件会抑制氨化菌的生长;中、碱性条件下,氨化菌仍能维持正常生长;苏州河的氨化菌无法以无机氮和尿素作为生长所需的氮源;在氮源充足条件下添加额外碳源,对氨化菌的生长无抑制作用;苏州河的环境条件有利于氨化菌的生长。

This method allows for a more accurate processing of boundary condition on the semiconductor layer in XLPE cable of stator winding than the standard finite element, so that the interlaminated issue of boundary condition on interface can be avoided. A general algorithm is applied to deal with both the Dirichlet and the periodic boundary condition in 2D or 3D magnetic field problem.

提出了用有限元法计算磁场问题时周期性边界条件和第一类边界条件的统一处理方法,利用该方法在不改变代数方程组阶数、保持系数矩阵性质不变和带宽基本不变的条件下,使两种强加边界条件能同时处理,简化了程序编制,并与寻址方法相结合,提高了计算速度。

First, the angular velocity function and maneuver load for certain maneuver flight (including hover, dive-hike and these two combined) are set up. The simulation results of the vibration of double-disk rotor system with cantilever supported on rigid bearings show that rotor would be apparently deformed under maneuver load. Second, the performance of oil force of SFD in maneuver flight is analyzed. The results show that in maneuver flight, the SFD with centering spring will become eccentric and its oil force will be time-related and offset-related.

首先,建立了水平盘旋、俯冲拉起及盘旋+俯冲拉起复合机动三种机动飞行条件下的机动角速度函数,并确定了对应机动飞行条件下的机动附加载荷(附加离心力和附加陀螺力矩),分析了带刚支的双盘悬臂转子系统在机动飞行条件下的振动特性,发现发动机转子在机动飞行时会发生明显变形;随后,分析了非定心挤压油膜阻尼器的油膜力特性,机动飞行时,油膜轴颈在机动附加载荷的作用下偏离外环中心,使得带定心弹支的挤压油膜阻尼器也变成了非定心挤压油膜阻尼器,其非定心挤压油膜力是瞬态时变的,并且与SFD油膜轴颈偏移量和进动形态有关;然后,在经典的Jeffcott转子系统中引入带定心弹支的挤压油膜阻尼器,分析了机动飞行时非线性转子系统的振动特性,发现挤压油膜阻尼器油膜力的非协调特性也反映到转子系统的振动响应中;之后,对机动飞行条件下带挤压油膜阻尼器的双盘悬臂转子系统的振动特性进行了分析,并重点分析、总结了俯冲拉起机动飞行时,系统结构参数和工作状态参数(转速比、机动飞行半径、机动角速度等)对该系统振动特性的影响。

First, the angular velocity function and maneuver load for certain maneuver flight (including hover, dive-hike and these two combined) are set up. The simulation results of the vibration of double-disk rotor system with cantilever supported on rigid bearings show that rotor would be apparently deformed under maneuver load. Second, the performance of oil force of SFD in maneuver flight is analyzed. The results show that in maneuver flight, the SFD with centering spring will become eccentric and its oil force will be time-related and offset-related. Then, SFDs are introduced into typical Jeffcott rotor system. The whole system will be statically displaced in maneuver flight and the nonsynchronous components of oil force appear in the response of rotor system.

首先,建立了水平盘旋、俯冲拉起及盘旋+俯冲拉起复合机动三种机动飞行条件下的机动角速度函数,并确定了对应机动飞行条件下的机动附加载荷(附加离心力和附加陀螺力矩),分析了带刚支的双盘悬臂转子系统在机动飞行条件下的振动特性,发现发动机转子在机动飞行时会发生明显变形;随后,分析了非定心挤压油膜阻尼器的油膜力特性,机动飞行时,油膜轴颈在机动附加载荷的作用下偏离外环中心,使得带定心弹支的挤压油膜阻尼器也变成了非定心挤压油膜阻尼器,其非定心挤压油膜力是瞬态时变的,并且与SFD油膜轴颈偏移量和进动形态有关;然后,在经典的Jeffcott转子系统中引入带定心弹支的挤压油膜阻尼器,分析了机动飞行时非线性转子系统的振动特性,发现挤压油膜阻尼器油膜力的非协调特性也反映到转子系统的振动响应中;之后,对机动飞行条件下带挤压油膜阻尼器的双盘悬臂转子系统的振动特性进行了分析,并重点分析、总结了俯冲拉起机动飞行时,系统结构参数和工作状态参数(转速比、机动飞行半径、机动角速度等)对该系统振动特性的影响。

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Objective To investigate the effects of interleukin-1 β converting enzyme gene on the biologic characteristics of ovarian cancer cells.

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