Progress in magnetic couple system of nitroxidemetal complexes

Metal_radical method is an effective approach to synthesizing magnetic molecular materials. With the development in decades, the study of nitroxide_metal complexes has made great progress in model, theoretical treatment and design of molecules. Several mechanisms of the metal_radical magnetic coupling are discussed. Molecular magnetic project of nitroxide_metal complexes has made fruitful achievements, but crystal magnetic project is difficult to be controlled, and it is a challenge to chemists. The studies on nitronyl nitroxide_metal complexes are summarized. At present, there are three major approaches to increasing the T c of the metal_radical compounds: (ⅰ) Searching for nitronyl nitroxide ligands that can yield 3_D ferro_ or ferrimagnetic structures; (ⅱ) decorating the structure of radicals with the aim to enhance the coordinate capability of radicals; (ⅲ) grafting polynitroxide radicals as a versatile bridge. The third approach, namely searching for polynitroxide ligand, will serve as a hopeful strategy for exploring higher T c radical molecule_based magnets.     

血清金属元素含量与缺血性脑血管病相互关系探讨

对缺血性脑血管病（ＩＣＶＤ）患者血清Ｚｎ、Ｃｕ、Ｃｒ、Ｍｇ元素进行测定,结果表明患者血清Ｃｕ、Ｃｒ、Ｍｇ含量比对照组低,Ｚｎ含量和Ｚｎ／Ｃｕ比值比对照组高,测定患者Ｚｎ／Ｃｕ比值较测定单一元素Ｚｎ、Ｃｕ更有意义。     

Buckling of a ferromagnetic thin plate in a transverse static magnetic field

An energy theory is proposed on the buckling of a ferromagnetic thin plate in a transverse static magnetic field. The analytic solution of critical field for plates is obtained by using variational method. It is shown that the critical magnetic field is not only influenced by the ratio of the thickness to the length, but also by the width, total length and the magnetic susceptibility of the specimen. Theoretical calculations agree with experiments reasonably.     

用^1H—NMR测定纤维素的摩尔取代度

用＾１Ｈ－ＮＭＲ测定羟丙基纤维素的摩尔取代度,根据纤维素在ＤＣｌ中水解后的＾１Ｈ－ＮＭＲ谱峰面积来计算ＭＳ值。同时还应用铬酸氧化蒸馏法测定了羟丙基纤维素的ＭＳ值,以及利用ＭＳ与羟丙基含量的关系得到ＭＳ值,可以发现ＮＭＲ的方法是可行的。     

不均匀场中静磁波的传播和导波光衍射效应

理论分析了磁光薄膜垂直不均匀静磁场对静磁波以及导波光衍射效率的影响,并以抛物线分布的不均匀磁场为例对Ｂｉ：ＹＩＧ薄膜波导进行了计算,计算表明,在适当分布的不均匀场作用下,与均匀磁场情形相比,波导中传播的静磁波振幅以及导波光的衍射效率都有显著增加。     

(磁)流体波动力学问题的近似求解─参数微分法

针对非线性物理如等离子体物理、流体力学、大气科学等领域中信受人们关注的两类摄动问题（Ⅰ）、（Ⅱ）,引进"参数微分法"得到其近似解,其结果可用于研讨摄动对原物理问题解的影响。类似的问题在许多动力学问题物理解的数值定性分析及其应用WKB方法处理时也会经常遇到。这里的方法仅对两个特例给出,无疑可用于其它类似问题的处理。     

旋转构件动态参数的在线检测技术

基于电磁检测原理,研究了一种用磁晶格法动态检测旋转构件的角速度、剪应变、剪应力、扭矩及轴功率等动态物理参数的新的检测技术与方法。阐明该检测方法的原理及检测信号的处理与转换技术,推导出时间域的检测量与旋转构件动参数之间的数学关系式;并用单片机实现了旋转构件动态物理参数的实时在线定量检测。     

磁法勘探解析延拓算法在探测地下洞穴中的应用

通过对某地下防空洞探测的磁异常数据的研究,以解析延拓的方法作了向上与向下的延拓．结果表明：解析延拓算法的研究,对确定地下异常体与更精确圈定其几何形态是非常有效的．     

晋江市潮间带底质,生物体中重金属含量及其分布特征

研究福建省晋江市潮间带底质、生物体内重金属含量的分布特征及其主要影响因素．结果表明：表层底质重金属除总Ｈｇ之外,Ｃｕ、Ｐｂ、Ｃｄ和总Ｃｒ含量在河口、半封闭海湾明显高于紧临台湾海峡的海湾及开敞海区,并且,近年来底质的这些重金属含量大多数呈递增趋势;底质的重金属除总Ｈｇ之外,其他的含量都与底质类型及有机质含量有较好的相关性;３种经济贝类对重金属的富集能力分别为：牡蛎,缢蛏和蛤对Ｃｕ的富集系数分别为ｎ×１０４,ｎ×１０３和ｎ×１０３;３种贝类对Ｐｄ和Ｃｄ的富集系数均为ｎ×１０２．     

软磁Fe基纳米微晶的穆斯堡尔谱研究

对纳米软磁合金Ｆｅ７３Ｃｕ１Ｎｂ１．５Ｍｏ２ｓＩ１２．５Ｂ１０的制备态和各退火态的室温Ｍｏｓｓｂａｕｅｒ谱研究,发现非晶相的超精细内场存在高场和低场两部分,