bluuebunny/crossref_metadata_2025_split huggingface dataset:
Copper(I) Pseudohalide Coordination Polymers containing Macrocyclic Methylcycloarsoxane (CH3AsO)n (n = 4, 5) or 1, 7‐Dithia‐18‐crown‐6 Bridging Units. Kupfer(I)‐Pseudohalogenid‐haltige Koordinationspolymere mit den Makrozyklen Methylcycloarsoxan (CH3AsO)n (n = 4, 5) oder 1, 7‐Dithia‐18‐Krone‐6 als Brückenliganden
Authors: Heller Maik , Teichert Olav , Sheldrick William S. 
Published: February 2005

AbstractTreatment of an acetonitrile solution of CuCN with methylcycloarsoxane (CH3AsO)n at 110 °C affords the coordination polymer [CuCN{cyclo‐(CH3AsO)4}] (1), in which infinite CuCN zigzag chains are linked by μ‐As1, As3 cyclotetramers (CH3AsO)4 into an open 3‐D framework. Under similar solvothermal conditions, reaction of CuSCN with (CH3AsO)n in the presence of KSCN leads to metal‐mediated ring expansion of the cyclo‐arsoxane to yield the complex [{K[cyclo‐(CH3AsO)5]2}Cu(NCS)2] (2). This contains discrete [Cu(NCS‐κN)2{cyclo‐(CH3AsO)5κAs}2]— anions that bridge κ10O coordinated potassium cations into infinite chains. In contrast, the structure directing role of the [K(1, 7DT18C6)2]+ sandwich building units for the solvothermal product [{K(1, 7DT18C6)2}Cu6(CN)7] (3) (1, 7DT18C6 = 1, 7‐dithia‐18‐crown‐6) leads to formation of an open [{Cu6(CN)7}—] framework. Individual [K(1, 7DT18C6)2]+ moieties bridge Cu Atoms in a μ‐S1, S7 mode and are encapsulated within the large [Cu26(CN)28]2— cages of the cyanocuprate(I) network.
A Novel Sulfur‐bridged Dimeric Zinc(II) Complex with 2, 6‐Diacetylpyridine Bis(thiosemicarbazone)
Authors: Matesanz Ana I. , Cuadrado Isabel , Pastor César , Souza Pilar 
Published: February 2005

AbstractThe reaction of zinc bromide with the pentadentate chelating ligand 2, 6‐diacetylpyridine bis(thiosemicarbazone) (H2L1) yields the formation of a novel complex. Recrystallization in a acetone/water solution leads us to isolate the mixed ligand complex of [Zn(H2L1)Br0.49(OH)0.51]2·(HSO4)2·6H2O, structurally characterized. The complex is a dimer in which each zinc atom is seven‐co‐ordinated with the SNNNS‐chelating ligand occupying the five equatorial positions, a bromine atom or hydroxo group in one of the two axial positions and a sulfur atom of the centrosymmetrical molecule occupies the other axial site making a bridge between the two zinc atoms. To the best of our knowledge is the first S‐bridged dimeric Zinc(II) complex derived from 2, 6‐diacetylpyridine bis(thiosemicarbazone) ligand. The MALDI‐TOF mass, solid state IR and 1H NMR (in DMSO solution) spectra are also discussed.
Syntheses and Structures of two Cobalt Coordination Polymers with Iminodiacetate Ligands: [CoII2(ida)2(H2O)2]n and [Na2CoIII2(ida)4(H2O)4]n·2nH2O
Authors: Zhang Quan‐Zheng , He Xiang , Yu Ya‐Qin , Chen Shu‐Mei , Lu Can‐Zhong 
Published: February 2005

AbstractTwo cobalt coordination polymers [CoII2(ida)2(H2O)2]n (1) and [Na2CoIII2(ida)4(H2O)4]n·2nH2O (2) (H2ida = iminodiacetic acid) have been synthesized and characterized by single‐crystal X‐ray diffraction analysis. Compound 1 exhibits a two‐dimensional framework, in which two cobalt atoms exhibit different coordination environments: one is equatorially coordinated by two ida ligands, while another is coordinated by two water molecules and four ida ligands. It is most interesting that, in compound 2, the ida ligands exhibit different coordination modes. The organic coordination anions [CoIII(ida)2]— are linked up by sodium ions to form a two‐dimensional layer.
Synthesis and Characterization of [Hg(sulfamethoxazolato)2]·2DMSO and[Cu2(μ‐CH3CO2)4(sulfamethoxazole)2]
Authors: de Lourenço Marques Lenice , Schulz Lang Ernesto , Fenner Herton , Castellano Eduardo Ernesto 
Published: February 2005

Abstract[Hg(sulfamethoxazolato)2]·2DMSO (1) and [Cu2(CH3COO)4(sulfa‐methoxazole)2] (2) can be obtained by the reaction of sulfamethoxazole with mercury acetate or copper acetate in methanol. The structures of the two complexes were characterized by single crystal X—ray diffractometry. Compound 1 consists of sulfamethoxazolato ligands bridging the metal ions building an unidimensional chain. Two solvent dimethylsulfoxide molecules are involved via N‐H···O hydrogen bridges. The mercury atom shows a linear primary coordination arrangement formed by two trans deprotonated sulfonamidic nitrogen atoms. The overall coordination around the metal atom may be regarded as a strongly distorted octahedron when the interactions of mercury with four sulfonamidic oxygen atoms [bond distances of 2.761(4) Å—2.971(4) Å] are also considered to build an equatorial plane and the N1 and N1′ atoms [bond distance of 2.037(5) Å] occupy the apical positions. Compound 2 is a dinuclear complex in which the copper ions are bridged by four syn‐syn acetate ligands which are related by a symmetry centre located in the centre of the complex. Each copper atom presents a nearly octahedral coordination where the equatorial plane is formed by four oxygen atoms and an isoxazolic nitrogen atom and the second copper atom occupy the apical positions.
Synthesis and Structure of the New Compound La2O(CN2)2 Possessing an Interchanged Anion Proportion Compared to the Parent La2O2(CN2). Synthese und Kristallstruktur der neuen Verbindung La2O(CN2)2 mit einem vertauschten Anionenverhältnis gegenüber der Bezugsverbindung La2O2(CN2)
Authors: Srinivasan Radhakrishnan , Tragl Sonja , Meyer H.‐Jürgen 
Published: February 2005

AbstractLa2O(CN2)2 was synthesized from a 1:1:2 molar reaction mixture of LaCl3, LaOCl, and Li2(CN2) at 650 °C. Well developed single crystals were grown from a LiCl‐KCl flux. The crystal structure was refined as monoclinic (space group C2/c, Z = 2, a = 13.530(2) Å, b = 6.250(1) Å, c = 6.1017(9) Å, β = 104.81(2)°) from single crystal X‐ray diffraction data. The La3+ and (CN2)2— ions in the crystal structure of La2O(CN2)2 can be compared to Fe3+ and S22— ions in the cubic pyrite structure, being arranged like in a distorted NaCl type structure with their centers of gravity. In addition, the O2— ions in La2O(CN2)2 are occupying 1/4 of the tetrahedral voids formed by the arrangement of metal ions.
Rb7[SiO4][VO4]: ein Ortho‐Silicat‐Vanadat(V)
Authors: Kerp Oliver , Möller Angela 
Published: February 2005

AbstractRb7[SiO4][VO4]: an Ortho‐Silicate‐Vanadate(V)Rb7[SiO4][VO4] has been obtained from a redox reaction between CdO and vanadium metal in the presence of Rb2O and SiO2 at 600 °C in an Ag container as yellow‐greenish transparent single crystals. The crystal structure determination (IPDS data: P21/c, a = 637.6(1) pm, b = 1039.7(1) pm, c = 2076.8(4) pm, β = 93.21(2)°, Z = 4, wR2 = 0.1319) reveals the presence of isolated complex anions, [SiO4]4— and [VO4]3—.
Adolescent attachment styles and their relation to the temperament and character traits of personality in a general population
Authors: Chotai Jayanti , Jonasson Mattias , Hägglöf Bruno , Adolfsson Rolf 
Published: February 2005

AbstractAttachment styles as well as personality traits in adolescents and adults have been found to be associated with their health outcomes and with their personality pathology. In this cross-sectional exploratory study, we study the relationship between attachment styles that derive from our data employing the items of Feeney et al. (1994) self-report attachment style questionnaire (ASQ), and personality traits given by the junior version of Cloninger et al. (1993) self-report temperament and character inventory (TCI), in a sample of 426 adolescents (54% females) from a general population. The secure attachment style was correlated significantly negatively with the personality trait harm avoidance (HA), but significantly positively with the personality traits novelty seeking (NS), reward dependence (RD), cooperativeness (CO) and self-transcendence (ST). The preoccupied (anxious/ambivalent) attachment style was correlated significantly positively with HA and NS, but significantly negatively with self-directedness (SD). The fearful-avoidant category was correlated significantly negatively with NS. Our five-factor solution of the attachment styles and their relation to the TCI point towards a need for a modification of the two-axis, four-category attachment model of Bartholomew (1990) and Bartholomew and Horowitz (1991), with their category dismissing-avoidant replaced by the two categories defined here as dismissing relations (correlated significantly negatively with CO) and dismissing others (correlated significantly negatively with RD and significantly positively with SD).
Neurophysiological and biomechanical characterization of goat cervical facet joint capsules
Authors: Lu Ying , Chen Chaoyang , Kallakuri Srinivasu , Patwardhan Ajit , Cavanaugh John M. 
Published: February 2005

AbstractCervical facet joints have been implicated as a major source of pain after whiplash injury. We sought to identify facet joint capsule receptors in the cervical spine and quantify their responses to capsular deformation. The response of mechanosensitive afferents in C5–C6 facet joint capsules to craniocaudal stretch (0.5 mm/s) was examined in anaesthetized adult goats. Capsular afferents were characterized into Group III and IV based on their conduction velocity. Two‐dimensional strains across the capsules during stretch were obtained by a stereoimaging technique and finite element modeling. 17 (53%) Group III and 14 (56%) Group IV afferents were identified with low strain thresholds of 0.107 ± 0.033 and 0.100 ± 0.046. A subpopulation of low‐strain‐threshold afferents had discharge rate saturation at the strains of 0.388 ± 0.121 (n = 9, Group III) and 0.341 ± 0.159 (n = 9, Group IV). Two (8%) Group IV units responded only to high strains (0.460 ± 0.170). 15 (47%) Group III and 9 (36%) Group IV units could not be excited even by noxious capsular stretch. Simple linear regressions were conducted with capsular load and principal strain as independent variables and neural response of low‐strain‐threshold afferents as the dependent variable. Correlation coefficients (R2) were 0.73 ± 0.11 with load, and 0.82 ± 0.12 with principal strain. The stiffness of the C5–C6 capsules was 16.8 ± 11.4 N/mm. Our results indicate that sensory receptors in cervical facet joint capsules are not only capable of signaling a graded physiological mechanical stimulus, but may also elieit pain sensation under excessive deformation. © 2005 Orthopaedic Research Society. Published by Elsevier Ltd. All rights reserved.
‘Presidentialization’ in Japan? The Prime Minister, Media and Elections in Japan
Authors: KRAUSS ELLIS S. , NYBLADE BENJAMIN 
Published: February 2005

Both academics and journalists have given increasing attention to the rising importance of prime ministers – a phenomenon often referred to ‘presidentialization’. Although many commentators use the term differently, and the term blurs the line between the very different institutional contexts of a parliamentary and presidential system, one careful definition of the term is ‘the movement over time away from collective to personalized government, movement away from a pattern of governmental and electoral politics dominated by the political party towards one where the party leader becomes a more autonomous political force.’This phenomenon has been observed primarily in Britain and in West European parliamentary democracies – no one has ever described the Japanese parliamentary system as even remotely ‘presidentialized’. In fact, the Japanese prime minister has not been the subject of much academic research, and even the Japanese press often used to ignore the prime minister. Despite being the leader of a majority party in a centralized political system, the Japanese prime minister was almost universally described as weak and uninteresting, with both academic and popular discourse focusing on the powerful bureaucracy and factional politics within the Liberal Democratic Party (LDP). However, recent political changes, most prominently the selection and popularity of Junichirō Koizumi as Japan's prime minister in the spring of 2001, have led to a surge of interest in the prime minister.
Agenda Setting, Issue Priorities and Organizational Maintenance: The US Supreme Court, 1955 to 1994
Authors: YATES JEFF , WHITFORD ANDREW B. , GILLESPIE WILLIAM 
Published: February 2005

In recent decades, political science has turned to the study of agenda setting as a central aspect of collective decision-making environments. The content of the public agenda – and the issue agendas of political institutions – make significant social change possible. Recent studies suggest that these political institutions are engaged in both competitive relationships, as they identify and pursue both active and latent public issues, and more complex cue-taking relationships. For separated powers, the problems of co-operation and competition with one another are entwined with internal collective decision-making dilemmas.In this study, we focus on the tension within a political institution between agenda setting as a mechanism for internal organizational maintenance, and agenda setting as a consequence of that institution's interaction with other branches of government and the general public. Specifically, we examine agenda setting by the United States Supreme Court, and ask the question of why the Court allocates more or less of its valuable agenda space to one policy issue over others. Our study environment is the policy issue composition of the Court's docket: the Court's attention to criminal justice policy issues relative to other issues. Among the most important powers of the Court is the power to apportion its agenda space among policy issues.Pacelle argues that the Court's agenda-building process, its culling of cases and issues from numerous petitions, may represent the most important sequence of decisions the Court makes. But the Court's docket is a finite agenda space on which some issues are provided with a larger proportion of the Court's attention. Allocating space to an issue can promote the issue's national visibility and legitimacy as an important public concern.
CLASSES OF OPERATOR-SMOOTH FUNCTIONS. III. STABLE FUNCTIONS AND FUGLEDE IDEALS
Authors: Kissin Edward , Shulman Victor S. 
Published: February 2005

AbstractThis paper continue to study the interrelation and hierarchy of the spaces of operator-Lipschitz functions and the spaces of functions closed to them: commutator bounded and operator stable. It also examines various properties of symmetrically normed ideals, introduces new classes of ideals: regular and Fuglede, and investigates them.AMS 2000 Mathematics subject classification: Primary 47A56; 47L20
SOLVABILITY OF SINGULAR DIRICHLET BOUNDARY-VALUE PROBLEMS WITH GIVEN MAXIMAL VALUES FOR POSITIVE SOLUTIONS
Authors: Agarwal Ravi P. , O’Regan Donal , Staněk Svatoslav 
Published: February 2005

AbstractThe singular boundary-value problem $(g(x'(t)))'=\mu f(t,x(t),x'(t))$, $x(0)=x(T)=0$ and $\max\{x(t):0\le t\le T\}=A$ is considered. Here $\mu$ is the parameter and the negative function $f(t,u,v)$ satisfying local Carathéodory conditions on $[0,T]\times(0,\infty)\times(\mathbb{R}\setminus\{0\})$ may be singular at the values $u=0$ and $v=0$ of the phase variables $u$ and $v$. The paper presents conditions which guarantee that for any $A>0$ there exists $\mu_A>0$ such that the above problem with $\mu=\mu_A$ has a positive solution on $(0,T)$. The proofs are based on the regularization and sequential techniques and use the Leray–Schauder degree and Vitali’s convergence theorem.AMS 2000 Mathematics subject classification: Primary 34B16; 34B18
ELEMENTARY OPERATORS AS LIE HOMOMORPHISMS OR COMMUTATIVITY PRESERVERS
Authors: Brešar Matej , Šemrl Peter 
Published: February 2005

AbstractWe consider elementary operators on centrally closed prime algebras that are Lie (or Jordan) homomorphisms or commutativity preservers.AMS 2000 Mathematics subject classification: Primary 16N60. Secondary 16R50; 47B47
ON DERIVATION OF THE DENSITY OF STATES FOR PERIODIC OPERATORS BY THE METHOD OF ASYMPTOTIC EXPANSION
Authors: Cherednichenko K. D. , Padilla P. 
Published: February 2005

AbstractA new asymptotic approach is suggested for studying spectra of linear differential operators with periodic coefficients. The resulting formal recurrent procedure and its rigorous justification allow us to prove a classical theorem on the density of states in one dimension.AMS 2000 Mathematics subject classification: Primary 34L20. Secondary 74J99; 78M35
Cost of maleness on brood production in the shrimp Lysmata wurdemanni (Decapoda: Caridea: Hippolytidae), a protandric simultaneous hermaphrodite
Authors: Bauer Raymond T. 
Published: February 2005

Individuals of Lysmata wurdemanni first mature in a male phase (MP) and then change to the external phenotype of females (female-phase=FP). The FPs retain the male gonadal system and function both as male and female (simultaneous hermaphrodites). The cost of maleness to FPs on fecundity was estimated with an experiment in which the social environment (FP opportunity to function as a male) was varied. The effect of maleness on brood size (number of embryos brood−1) and frequency of spawning (interspawn interval in days) was measured in FPs maintained in different social environments (treatments) over two complete spawning cycles. In treatment 1 (isolated FP) and 2 (1 FP, 1 MP), FPs could only function as females. In treatments 3 (2 FPs) and 4 (5 FPs, 5 MPs), FPs could breed both as male and female.Baseline brood size was described for FPs with a regression equation of brood size on FP body size (carapace length). Brood size is positively and isometrically related to FP size. Brood sizes, adjusted for FP body size using the baseline regression equation, were compared among treatments 2–4 (isolated FPs in treatment 1 did not produce fertile broods). Brood sizes were significantly greater in FPs in treatment 2 (only female breeding) than in treatments 3 and 4 (both male and female sexual function possible). However, spawning was less frequent (longer interspawn intervals) in treatments 1 and 2 than in treatments 3 and 4. Total fecundity over a four-month breeding period was estimated with a model using mean treatment brood sizes and interspawn intervals. Estimates of total fecundity in FPs functioning both as male and female were much lower, in spite of somewhat more frequent spawning, than those in which male function was not allowed. The ‘price’ (cost) of maleness on fecundity appears to be compensated by the high selective advantage of male mating ability in the simultaneous hermaphrodite FPs of Lysmata species.
Mefenamic acid as a novel activator of L‐type voltage‐dependent Ca2+ channels in smooth muscle cells from pig proximal urethra
Authors: Teramoto Noriyoshi , Tomoda Toshihisa , Ito Yushi 
Published: February 2005

The effects of mefenamic acid and Bay K 8644 on voltage‐dependent nifedipine‐sensitive inward Ba2+ currents in pig urethral myocytes were investigated by use of conventional whole‐cell configuration patch clamp.
Mefenamic acid increased the peak amplitude of voltage‐dependent nifedipine‐sensitive inward Ba2+ current without shifting the position of the current–voltage relationship.
Mefenamic acid (300 μM) caused little shift in the activation curve although the voltage dependence of the steady‐state inactivation was shifted to more positive potentials by 11 mV in the presence of mefenamic acid.
Bay K 8644 (100 nM) enhanced voltage‐dependent nifedipine‐sensitive inward Ba2+ currents in a concentration‐ and voltage‐dependent manner, shifting the maximum of the current–voltage relationship by 10 mV in the hyperpolarizing direction.
Bay K 8644 (1 μM) significantly shifted the voltage dependence of the activation curve to more negative potentials by approximately 9 mV although Bay K 8644 caused little shift in the steady‐state inactivation curve.
These results indicate that mefenamic acid increased voltage‐dependent nifedipine‐sensitive inward Ba2+ currents through the activation of L‐type Ca2+ channels with different kinetics from those of Bay K 8644 in pig urethral myocytes.

British Journal of Pharmacology (2005) 144, 919–925. doi:10.1038/sj.bjp.0706051
Muscarinic receptor subtypes in human bladder detrusor and mucosa, studied by radioligand binding and quantitative competitive RT–PCR: changes in ageing
Authors: Mansfield Kylie J , Liu Lu , Mitchelson Frederick J , Moore Kate H , Millard Richard J , Burcher Elizabeth 
Published: February 2005

We investigated muscarinic receptors in the detrusor and mucosa of the human bladder body. Radioligand‐binding studies with [3H]QNB were conducted using specimens collected from patients (36–77 years) with normal bladder function, undergoing surgery. For RT–PCR, biopsies of normal bladder were obtained from patients (30–88 years) undergoing check cystoscopy.
Binding of [3H]QNB in detrusor (n=20) was of high affinity (KD 77.1 (55.2–99.0) pM) and capacity (Bmax 181±7 fmol mg protein−1). Similar values were obtained in mucosa (n=6) (KD 100.5 (41.2–159.9) pM; Bmax 145±9 fmol mg protein−1).
Competition‐binding experiments in detrusor membranes with muscarinic receptor antagonists including trospium, darifenacin, 4‐DAMP, methoctramine, AQ‐RA 741, AF‐DX 116 and pirenzepine indicated a receptor population of 71% M2, 22% M3 and 7% M1. In the mucosa, 75% of sites were M2 receptors, with 25% M3/M5.
Using RT–PCR, expression of M1, M2, M3 and M5 mRNA was demonstrated in both detrusor and mucosa.
The presence of a high density of mainly M2 muscarinic receptors in the mucosa appears to be a novel finding and raises the question of their physiological significance and the source of their endogenous ligand.
There was a negative correlation of receptor number (Bmax) with age in detrusor muscle from male patients (P=0.02). Quantitative competitive RT–PCR demonstrated a selective age‐related decrease in mRNA for muscarinic M3 but not M2 receptors, in both male (P<0.0001) and female (P=0.019) detrusor. These findings correspond with reports of decreased detrusor contractility with ageing.

British Journal of Pharmacology (2005) 144, 1089–1099. doi:10.1038/sj.bjp.0706147
Hyperforin activates nonselective cation channels (NSCCs)
Authors: Treiber Kristina , Singer Andrea , Henke Bettina , Müller Walter E 
Published: February 2005

A large body of evidence supports the preclinical antidepressant profile of hyperforin including inhibition of the synaptosomal uptake of several neurotransmitters by hyperforin and studies in behavioural models. In contrast to other antidepressants, hyperforin does not directly inhibit neurotransmitter transporters, but instead uptake inhibition seems to be the consequence of an elevated intracellular sodium concentration ([Na+]i).
The mechanism of hyperforin‐induced elevation of [Na+]i was investigated using two different cell types: human platelets and rat pheochromocytoma cells (PC12 cells). In both cell systems, hyperforin increased both [Na+]i and free intracellular Ca2+ concentration ([Ca2+]i).
One pathway for Na+ and Ca2+ entry is mediated by nonselective cation channels (NSCCs), which can be blocked by SK&F 96365 and LOE 908. LOE 908 is a blocker of both NSCC1 and NSCC2 subclasses, while SK&F 96365 blocks NSCC2 only. Both SK&F 96365 and LOE 908 completely inhibited the hyperforin‐induced influx of Na+ and Ca2+ into platelets and PC12 cells. This indicates that hyperforin is mainly active upon NSCC2.
The effect of hyperforin is inhibited by La3+ and Gd3+, indicating that there is a potential homology with canonical transient receptor potential protein channels (TRPC channels). Moreover, La3+ and Gd3+ attenuate the effect of hyperforin on serotonin uptake in human platelets. Additionally, hyperforin induces barium influx in PC12 cells and this influx can be inhibited by SK&F 96365, LOE 908, Gd3+ and La3+.
In summary, these findings suggest that hyperforin represents a new principle for preclinical antidepressant activity, modulating brain neurotransmission by inhibition of neurotransmitter uptake via activation of NSCCs.

British Journal of Pharmacology (2005) 145, 75–83. doi:10.1038/sj.bjp.0706155