探析影响地铁施工的10kV电缆改迁方案

地铁施工时,所设站区一般在市区主干道,繁华地带,如何保证交通顺畅和地铁施工都不受影响的情况下,把影响地铁施工的电缆进行合理改造,这是所面临的重要问题.文中详细论述了在不同状况下,采用不同的设计方案和施工方法,尽快实现电缆的合理改迁.     

Lithium ion transport of solid electrolytes based on PEO/CF3SO3Li and aluminum carboxylate

A homogeneous, composite polymer electrolyte (PE) containing poly(ethylene oxide) (PEO), CF₃SO₃Li and 33 wt.% of aluminum carboxylate [RC(O)OAlEt₂]₂ with an oligooxyethylene group R = CH₂CH₂C(O)O(CH₂CH₂O)_nCH₃ (n = 7) (AlCarb7), characterized by low glass transition temperature T_g = −51.4 °C was prepared. The interaction of aluminum carboxylate with various lithium salts was characterized on the basis of ²⁷Al NMR spectroscopy in CDCl₃ solutions. The bulk conductivity of solid PE with AlCarb7 is of the order of 10⁻⁵ S cm⁻¹ at 60 °C and 10⁻⁴ S cm⁻¹ at 90 °C. Electrochemical tests of Li|PE|Li cells showed a decrease in the R_SEI with temperature, stabilizing at about 10 Ω cm⁻². The lithium ion transference numbers determined by ac–dc polarization experiments range from 0.7 to 0.9. ⁷Li, ¹⁹F and ¹H NMR spectra, the relaxation time and diffusion data were obtained. The calculated lithium transference number t₊ at 50 °C is equal to 0.995, which suggests practically complete immobilization of the triflate salt anions. In the range of high temperatures (130–180 °C) t₊ is equal 0.35–0.39. The dependence of t₊ on temperature should probably be connected with the partial dissociation of the aluminum carboxylate and lithium salt complex.     

The mediating role of insight for long-term improvements in psychodynamic therapy.

Objective: According to psychoanalytic theory, interpretation of transference leads to increased insight that again leads to improved interpersonal functioning over time. In this study, we performed a full mediational analysis to test whether insight gained during treatment mediates the long-term effects of transference interpretation in dynamic psychotherapy. Method: This study is a randomized clinical trial with a dismantling design. One hundred outpatients seeking psychotherapy for depression, anxiety, personality disorders, and interpersonal problems were randomly assigned to 1 year of weekly sessions of dynamic psychotherapy with transference interpretation or to the same type and duration of treatment with the same therapists but without the use of transference interpretation. Interpersonal functioning and insight were measured pretreatment, posttreatment, and 1 year and 3 years after treatment termination. Results: Contrary to common expectation, patients with a life-long pattern of low quality of object relations and personality disorder pathology profited more from therapy with transference interpretation than from therapy with no transference interpretation. This long-term effect was mediated by an increase in the level of insight during treatment. Conclusions: Insight seems to be a key mechanism of change in dynamic psychotherapy. Our results bridge the gap between clinical theory and empirical research. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Collusions as interactive resistances and possible stepping-stones out of impasses.

Collusion is defined as a resistance between therapist and patient in which the transference and countertransference become interlocked in a tacit agreement to avoid a mutually fantasized catastrophe. Collusions are possible because therapist and patient share an unconscious, fearful remembrance of the breakdown of the function of the primary object. Although usually described as destructive for the treatment, collusions might also protect the psychotherapy by preventing disillusions from occurring too quickly. It is argued that when the therapist has been sufficiently recognized as a container function, the progress of change can continue and often does so by means of a sudden shift generated by changes in the analytic setting. Theory is illustrated with case material from a patient suffering from chronic schizophrenia. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

New boron compounds as additives for lithium polymer electrolytes

A new class of difluoroalkoxyborane compounds ([R_nOBF₂]₂) containing oligooxyethylene groups of various molecular weight in the form of a methyl monoether (R_n = CH₃(OCH₂CH₂)_n, n = 1, 2, 3 and 7) has been obtained in the reaction of BF₃ etherate with appropriate glycols. ¹H, ¹¹B and ¹⁹F NMR spectral analysis of the derivatives obtained was carried out and the properties as Lewis acids of these derivatives have been compared with that of corresponding trialkoxyboranes and boron trifluoride in reaction with pyridine. The strength of the interaction of [R₂OBF₂]₂ with the differing in “hardness” anions of various lithium salts has been analyzed on the basis of NMR spectra. The [R_nOBF₂]₂ obtained were used as additives for polymer electrolytes containing PEO as polymer matrix and various lithium salts at an equimolar ratio of the boron compound to salt. The highest ionic conductivities, in the order 10⁻⁵ to 10⁻⁴ S cm⁻¹ at 20-70 °C, were achieved for systems containing LiI and LiN(CF₃SO₂)₂. The lithium transference number (t₊) values, determined by the electrochemical method by steady-state technique for LiF and LiCF₃SO₃ are in the 0.6-0.8 range.     

Decomposition of a Finite Rotation into Three Rotations about Given Axes

This paper consists of two parts. The subject of Part I is the following problem.Given are the axis and the angle of a finite rotation about a fixed point.Given are, furthermore, the axes of three consecutive rotations. To be determined are the angles of the three consecutive rotations such that theirresultant rotation is the given rotation. Explicit solutions to this problemare developed. Conditions for the existence of real solutions are given. In certain cases called critical the first and the third angleare not individually determinate. Only their sum or their difference is. Conditionsspecifying critical cases are developed.In Part II of the paper the more general problem of decomposition of a finite screw displacement into three consecutive screw displacements about given screw axes is solved.The solution is achieved by applying the transference principle of Kotelnikov and Study to the solution of the rotation problem.     

大型双层异线性振动筛模态计算与试验分析

通过建立有限元计算模型,在设计阶段对一种新型32 m2异线性双层振动筛进行了模态计算.计算结果与样机模态试验结果进行了比较,二者吻合较好,说明有限元模型的建立及参数的选择是合理的.模态计算结果为大型双层异线性振动筛制造前的性能预估提供了可靠依据.将试验测试所得到的数据进行传递函数分析,通过分析传递函数集总显示图,结合模态计算数据,提出了振动筛工作频率的合理选取范围.     

How anti-gay bias compromised a treatment: A commentary on Meissner (2006).

Comments on the original article, "Time on my hands: The dilemma of the chronically late patient" by W. W. Meissner (see record 2006-20697-003). Meissner's paper purports to examine a chronically late patient. What emerges instead is an example of antigay analytic bias that is rarely acknowledged in this era of increasing acceptance of nonheterosexual orientation. Fr. Meissner described his use of coercive interpretations and collusion with the patient to suppress unwanted expressions of and activities around sexual orientation. This commentary briefly recapitulates the recent history of psychoanalysis' awakening over issues of sexual orientation and attempts by the profession's major figures to expand their understanding of human sexuality. The opportunity to reexamine an historical homophobic stance is used in this commentary to produce a more parsimonious interpretation of the patient's chronic lateness and other issues around contamination of the treatment by antigay analytic bias. (PsycINFO Database Record (c) 2010 APA, all rights reserved)