bluuebunny/crossref_metadata_2025 huggingface dataset:
Sapphirine-bearing granulitcs from Labwor,
Uganda
Authors: Nixon P. H. , Reedman A. J. , Burns L. K.
Published: December 2006

The structural setting of a refoliated
belt of sapphirine granulites in northern Uganda
and petrography of two selected rocks are
described. Electron-probe analyses of the
following minerals are given: ilmenite, titanian
hematite, rutile, magnetite, sapphirine,
hyperstheue, brown and green biotite, garnet, and
cordierite. Field and experimental data suggest
the following paragenesis: deposition of
ferruginous shales with siliceous bands, followed
by burial and regional metamorphism under
granulite facies conditions, and finally rapid
unloading associated with refoliation and shearing
and crystallization of sapphirine and
cordierite.
Guano minerals from Murra-el-elevyn Cave
Western Australia
Authors: Bridge P. J.
Published: December 2006

Biphosphammite, ammonian
KH2PO4,
syngenite, aphthitalite, monetite, hannayite,
whitloekite, apatite and minor gypsum, taylorite,
brushite, mirabilite, guanine, and unidentified
compounds form crystalline crusts on the walls and
floors of a chamber of Murra-el-elevyn Cave,
Cocklebiddy, Nullarbor Plain, Western Australia.
The minerals are derived from the interaction of
bat urine, droppings, and limestone. Analyses for
CaO, MgO, Na2O,
K2O,
SO3,
P2O5,
CO2,
NH3,
H2O-,
total N, and ignition loss are given. High
K2O and low total N figures
are characteristic of the analyses.
The crystallization history and mechanism of emplacement of the western part of the Galway Granite, Connemara, Western Ireland
Authors: Leake Bernard E.
Published: December 2006

The Galway Granite often has a highly siliceous aphyric alkali granite at the margin, followed inwards by a K-feldspar phenocrystic adamellite and then a steeply layered granodiorite. This previously puzzling arrangement, which seemed to conflict with the necessity to cool from the periphery and crystallize the most basic granite at the margin, is examined by a traverse of chemically analysed rocks and biotites. The Mg/(Mg+Fe+Mn) values indicate that the granodiorite probably crystallized from the outside inwards. The marginal aphyric granite crystallized from the acid residuum in the nearly solid adamellite. This was drawn out of the adamellite by blocks of country rock falling into the adamellite and creating a zone of rarefaction behind them. This also explains the absence of a chilled margin and the aplitic texture and mineralogy of the aphyric granite. The adamellite largely accumulated by crystal settling with gravity grading but the granodiorite crystallized in vertical layers during upward vertical movements of the magma that tipped up the gravity layering in the adamellite. Scattered microdioritic xenoliths are postulated to be disrupted dykes. Eighteen granite and twenty-seven biotite analyses are tabulated.
Vincentite, a new palladium mineral from south-east Borneo
Authors: Stumpfl E. F. , Tarkian M.
Published: December 2006

Vincentite, a new palladium mineral containing As, Sb, and Te, has been discovered in platinum-gold concentrates from the Riam Kanan River, SE. Borneo. It occurs as small grains (up to 40 µm) in iron-bearing platinum. In reflected light, vincentite is light brownish-grey and in some sections weakly anisotropic. Reflectance at 470, 546, 589, and 650 nm is 46·3–47·5, 49·2–52·8, 51·7–53·9, and 54·9–56·0, respectively. VHN15 = 494. Electron probe analysis has been performed on two grains, the compositions of which are (Pd5·32Pt0·68) (As0·90Sb0·48Te0·65) and (Pd5·17Pt0·83) (As0·89Sb0·70Te0·45) or, simplified, (Pd,Pt)3(As,Sb,Te). This is distinctly different from both arsenopalladinite, Pd5(As,Sb)2 with As > Sb as defined by Clark (1974), and mertieite, Pd5(Sb,As)2.

The following lines have been observed in the powder pattern: 4·180, 3·950, 3·240, 2·750, 1·997, 1·749, 0·944. This cannot be matched by the patterns of arsenopalladinite, mertieite, isomertieite, stibiopalladinite, atheneïte, or synthetic Pd3As.

The name is in honour of Prof. E. A. Vincent, of Oxford.
Sideritic concretions from the Westphalian of Yorkshire: a chemical investigation of the carbonate phase
Authors: Pearson M. J.
Published: December 2006

The carbonate phase of impure sideritic concretions from a sequence of argillaceous sediments from the Westphalian of Yorkshire has been analysed using an acid-dissolution technique and corrections allowing for the decomposition of non-carbonate minerals applied to obtain accurate compositional formulae.

The siderites show considerable compositional variation, some containing Ca in excess of anticipated substitutional limits. Whilst these may be metastable it is suggested that coupled Mg-Ca substitution could provide an explanation.
Some high-pressure pyroxenes
Authors: Thompson R. N.
Published: December 2006

Microprobe analyses of Ca-rich pyroxenes crystallized in the melting ranges of a magnesian alkali basalt, a transitional basalt, an olivine tholeiite, a tholeiitic andesite, and an augite leucitite at pressures between 8 and 45 kb show complex variation. Ca-poor pyroxene precipitated only from the alkali basalt at pressures between 14 and 18 kb. Pyroxene falling near the Di-Hed join in the pyroxene quadilateral formed at all pressures and temperatures from the leucitite, whereas ‘Ca-rich’ pyroxene crystallizing from the other four compositions was Ca-poor augite to sub-calcic augite. TheliquidusCa-rich pyroxenes all show rising Al and Na and falling Ti with increasing pressure and temperature. Other elements show complex behaviour; all but the leucitite pyroxenes tend to make temporary excursions of solid solution towards Ca-poor pyroxene at intermediate pressures, returning to more Ca-rich compositions at high pressures. Atsub-liquidustemperatures Na and Ti consistently rise with fallingTat constantPand also with risingPat constantTin these pyroxenes. The behaviour of the other elements in these circumstances depends on the nature of the coexisting phases.

Fe/Mg distribution between Ca-rich pyroxene and liquid, in the form

has a constant value of 0.29 for three separate bulk compositions at widely differing temperatures and pressures. Distribution coefficients for Mg and Fe between pyroxenes and coexisting garnets at high pressures are very similar to those found in garnet pyroxenite xenoliths from Oahu, Hawaii. Systematic shifts in the apparent stoichiometry (all Fe taken as Fe2+) of the augite leucitite pyroxenes are thought to indicate that they have considerable Fe3+contents at low pressure, decreasing asPrises. If so, they show a strong negative correlation between Na and Fe3+, which negates the customary practice of forming acmite before jadeite component when recalculating the analyses of high-pressure pyroxenes.

The sets of pyroxenes crystallized from each composition show consistent trends when plotted on such diagrams as jadeitevsCa-Tschermak's ‘molecule’, which have often been used in attempts to discriminate natural pyroxenes formed in differingP-Tenvironments. However, these new data show clearly that the bulk chemistry of the magma has a predominating influence on the composition of the pyroxenes crystallizing from it. Unless it is certain that a suite of natural pyroxenes have all precipitated from the same magma, it is probably pointless to attempt to deduce the relativeP-Tconditions of their formation from their major element chemistry.
Serpentine minerals from the southern portion of the ultramafic belt of New Caledonia
Authors: Rodgers K. A.
Published: December 2006

Peridotitic rocks in the Massif du Sud, southern New Caledonia, have suffered about 30 % serpentinization. Optical studies combined with X-ray and chemical analyses indicate that chrysotile and lizardite are the dominant serpentine species present. Serpentinization probably occurred during emplacement of the Massifs in their present overthrust position.
The mineralogy and paragenesis of a fluorspar flat at Masson Hill, Matlock, Derbyshire
Authors: Ixer Robert A.
Published: December 2006

Investigation of the mineralogy and paragenesis of the fluorspar flat at Masson Hill, Matlock, Derbyshire, shows the mineralization to be a combination of void infilling and metasomatic replacement. The main paragenesis is of the non-sulphides, fluorite, baryte, and calcite accompanied by a sequence of sulphides, bravoite, pyrite, marcasite, chalcopyrite, sphalerite, and galena. A wide range of secondary minerals occur in the oxidation zone.
Nigerite in the tin-tantalum pegmatites of Amapá, Brazil
Authors: Kloosterman J. B.
Published: December 2006

The location and some characteristics of nine veins containing nigerite are reported. These veins are part of the province of tin-tantalum veins of central Amapá. They are intrusive in andalusite schist and commonly consist of pegmatite in the centre and of quartz-mica rock at the margins. The nigerite can occur in the pegmatite as well as in the quartz-mica rock; its presence in a sample of quartz-sillimanite rock is also mentioned. In both pegmatite and quartz-mica rock, the common associated translucent heavy minerals are cassiterite, tourmaline, chrysoberyl, and occasionally andalusite, sillimanite, and garnet. Associated minerals in the quartz-sillimanite rock are cassiterite and chrysoberyl. Nigerite and cassiterite commonly occur together but are not found in the presence of gahnite. A possible explanation for this is given.

The nigerite of Amapá occurs as thin hexagonal plates, transparent and golden brown, amber-yellow or colourless, with diameters from microscopic up to a few millimetres. The sizes and the optical sign of this nigerite are the same as those of Nigeria and of Siberia, whereas Portuguese nigerite occurs in very fine grains and is mostly optically negative. The existence of alluvial nigerite is reported.
The crystal structure of phlogopite by neutron diffraction
Authors: Rayner J. H.
Published: December 2006

The positions of all the atoms including hydrogen have been found by a partial three-dimensional single-crystal neutron-diffraction study in which about one-third of the reflections in the reciprocal sphere to 1·5 Å were measured. The hydroxyl group is perpendicular to the plane of the silicate sheets. The fluorine content of this phlogopite is enough to occupy 25 % of the (OH, F) sites. Site occupancy refinement suggests that there is a small deficiency of hydrogen at the remaining sites and that the two crystallographically different octahedral sites are fully occupied by the same proportions of Mg, Ti, Fe, and Ca.
Phase II Trial of a Toll-Like Receptor 9–Activating Oligonucleotide in Patients With Metastatic Melanoma
Authors: Pashenkov Mikhail , Goëss Gerda , Wagner Christine , Hörmann Markus , Jandl Tamara , Moser Anna , Britten Cedrik M. , Smolle Josef , Koller Silvia , Mauch Cornelia , Tantcheva-Poor Iliana , Grabbe Stephan , Loquai Carmen , Esser Stefan , Franckson Tom , Schneeberger Achim , Haarmann Cäcilia , Krieg Arthur M. , Stingl Georg , Wagner Stephan N.
Published: December 2006

Purpose

The recent identification of toll-like receptors (TLRs) and respective ligands allows the evaluation of novel dendritic cell (DC) –activating strategies. Stimulation of TLR9 directly activates human plasmacytoid DCs (PDCs) and indirectly induces potent innate immune responses in preclinical tumor models. We performed an open-label, multicenter, single-arm, phase II pilot trial with a TLR9-stimulating oligodeoxynucleotide in melanoma patients.

Patients and Methods

Patients with unresectable stage IIIb/c or stage IV melanoma received 6 mg PF-3512676 weekly by subcutaneous injection for 24 weeks or until disease progression to evaluate safety as well as clinical and immunologic activity. Clinical and laboratory safety assessments were performed weekly; blood samples for immunological measurements were taken every 8 weeks. Tumor measurements were performed according to Response Evaluation Criteria in Solid Tumors.

Results

Twenty patients received PF-3512676 for a mean of 10.9 weeks with a mean of 10.7 injections. Laboratory and nonlaboratory adverse events were limited, transient, and did not result in any withdrawals. Two patients experienced a confirmed partial response; one response is ongoing for 140+ weeks. Three patients experienced stable disease. Immunologic measurements revealed induction of an activated phenotype of PDC, elevation of serum levels of 2′,5′-oligoadenylate, a surrogate marker of type I interferon production, and significant stimulation of natural killer cell cytotoxicity (the latter was associated with clinical benefit).

Conclusion

These results indicate that TLR9-targeted therapy can stimulate innate immune responses in cancer patients, identify biomarkers that may be associated with TLR9-induced tumor regression, and encourage the design of follow-up studies to evaluate the ability of this therapeutic approach to target human cancer.
A Simple Method to the Fabrication of Rectangular Co3O4 Nanosheets
Authors: Ni Xiaomin , Song Jimei , Li Dongguo , Zhang Yongfeng , Zheng Huagui
Published: December 2006

Rectangular Co3O4 nanosheets with the thickness of about 50–100 nm were fabricated by calcining the isomorphological Co(CO3)0.35Cl0.20(OH)1.10 precursor, which were produced via the reaction of CoCl2 and CO(NH2)2 in the presence of PEG (polyethylene glycol)-10000. Thus-prepared Co3O4 sheets exhibited high efficiency for the growth of carbon nanotubes in pyrolyzing ethanol.
In Situ Measurement of Individual W/O Microemulsions of Aerosol OT in Dodecane/Water Extraction System by Total Internal Reflection Laser Light Scattering Microscopy
Authors: Tsukahara Satoshi , Kitaguchi Haruyasu , Watarai Hitoshi
Published: December 2006

The laser light scattering microscopy under the total internal reflection condition allowed one to do in situ measurements of individual W/O microemulsions of aerosol OT (AOT) formed spontaneously at a dodecane/water interface in a thin-layer two-phase microcell. The instrument can detect the AOT microemulsions being larger than 50 nm in hydrodynamic radius at the interface and in the dodecane phase without any probe molecules.
A Facile Size-control Method of CdS Nanoparticles In-situ Synthesized in Polymer Matrix by Adjusting Ratio of Acidic Acid with Metallic Complex in Acrylate Photoresist Resin
Authors: Sun Zheng-Bin , Chen Wei-Qiang , Dong Xian-Zi , Duan Xuan-Ming
Published: December 2006

A facile method with efficient control of nanoparticles size in polymer matrix by combination of in situ synthesis and photopolymerization is proposed and investigated. The photoluminescence of the CdS–polymer nanocomposites was easily tuned by adjusting the molar ratio of acrylic acid to cadmium acrylate in designed photoresist resins.
Carbazole Synthesis by Platinum-catalyzed C–H Functionalizing Reaction Using Water as Reoxidizing Reagent
Authors: Yamamoto Mitsuru , Matsubara Seijiro
Published: December 2006

Treatment of 1-aminobiphenyl and diphenylamine with catalytic amount of Pt/C in hydrothermal water (250 °C, 4 MPa) affords 9H-carbazole in good yield. In this catalytic cycle, water works as reoxidizing reagent for platinum catalyst.
Enantioselective Epoxidation of Conjugated Z-Olefins with Newly Modified Mn(salen) Complex
Authors: Egami Hiromichi , Irie Ryo , Sakai Ken , Katsuki Tsutomu
Published: December 2006

Chiral Mn(salen) complex 3 bearing a 1-ethyl-1-methylpropyl group at C3, C3′, C5, and C5′ was found to induce higher asymmetry in the epoxidation of conjugated Z-olefins, especially less nucleophilic ones, in the presence of 4-phenylpyridine N-oxide than complex 1 bearing a t-butyl group at the same carbons. The higher enantioselectivity was considered to be attributable to Me-in-plane conformation of the 1-ethyl-1-methylpropyl group at C3 and C3′.
Iron-catalyzed Direct-type Hydroxymethylation of 1,3-Dicarbonyl Compounds in Water
Authors: Ogawa Chikako , Kobayashi Shu
Published: December 2006

Direct-type hydroxymethylation of 1,3-dicarbonyl compounds with aqueous formaldehyde proceeded smoothly in water in the presence of Fe(NO3)3·9H2O and sodium dodecylbenzenesulfate (SDBS), to afford the corresponding products in good to high yields.
How innovation can alleviate negative consequences of demanding work contexts: The influence of climate for innovation on organizational outcomes
Authors: King Eden B. , De Chermont Kelly , West Michael , Dawson Jeremy F. , Hebl Michelle R.
Published: December 2006

This study examines climate for innovation as a method by which negative organizational consequences of demanding work may be lessened. It was expected that a climate for innovation would enable employees to develop coping mechanisms or improved work‐related processes which counteract negative consequences of work demands. Extending the job demands‐resource model (Karasek, 1979), we predicted and found that among the sample of 22,696 respondents from 131 healthcare organizations, organizational climate for innovation alleviated the negative effects of work demands on organizational performance. Thus, this study informs climate theories and guides practitioners' efforts to support the employees.
A Different World: Embodied Experience and Linguistic Relativity on the Epistemological Path to Somewhere
Authors: Watson‐Gegeo Karen Ann
Published: December 2006

This article explores the role of limit experiences (Tracy) and linguistic relativity (Whorf) in shaping our ontological and epistemological understandings of the world. Specifically, I trace the transformations in embodied understanding I have undergone in three situations across my life course–in Hawai'i, Solomon Islands, and as an acutely ill and disabled patient in a live‐in clinic in Dallas, Texas. I give examples of how our perceptions, conceptions, and proprioceptions are positioned, constrained, opened to interpretation, and even denied by our culture and language. Limit experiences, however, open the possibility for transformation of understanding and recognition that there are probably infinite manifest and unmanifest realities.
Interview
Authors: Rich Grant J.
Published: December 2006

This is an interview with author Lester Grinspoon, M.D., whose work on psychoactive substances over the last thirty‐five years has been highly influential. His book, Marihuana: The Forbidden Medicine (written with James B. Bakalar), is a classic source on the medical marijuana controversy. His books Psychedelic Drugs Reconsidered and Cocaine: A Drug and Its Social Evolution are standards in the field. Dr. Grinspoon received his M.D. from Harvard Medical School and currently is associate professor emeritus at Harvard Medical School. His academic work has also reached a general audience through publications ranging from the New York Times Book Review to Playboy. Describing him as the "complete medical scholar," his citation for the Lindesmith Award for Achievement in the Field of Scholarship also notes, "Lester Grinspoon represents all those scholars who report the results of their research truthfully, despite the political consequences of this unwelcomed honesty."
The Effects of Pre‐Entry Career Maturity and Support Networks in Workplace on Newcomers' Mental Health
Authors: Kawai Kaoru , Yamazaki Yoshihiko
Published: December 2006

The Effects of Pre‐Entry Career Maturity and Support Networks in Workplace on Newcomers' Mental Health: Kaoru Kawai, et al. Department of Health Sociology, School of Health Science and Nursing, The University of Tokyo—The present study examined the effects of pre‐entry experiences (i.e. career maturity), as well as support networks (i.e. informational and friendship), on newcomers' mental health (i.e. depression, self‐esteem, psychosomatic symptoms, and work motivation). We performed a longitudinal study of 890 men and women who first entered the workplace in 2003. Surveys were distributed at two time points: just prior to entering the workplace, and two months after entering. Results indicated that career maturity related positively to newcomers' mental health, and newcomers with high career maturity were more successful in establishing positive relationships with superiors and co‐workers. Although, informational support networks positively related to work motivation, friendship networks did not show any direct effects on mental health. These results underscore the crucial roles of career maturity and informational networks in facilitating the transition to the workplace. The results also provide empirical support for an expanded view of the importance of pre‐entry experiences to workplace newcomers' mental health.
Reactions of α-4(20)-epoxy-5-O-mesyltriacetyltaxicine I induced by Bf3·Et2O/Bu4NBr
Authors: Ferjancic Zorana , Matovic Radomir , Cekovic Zivorad , Saicic Radomir
Published: December 2006

The reaction of ?-4(20)-epoxy-5-O-mesyltriacetyltaxicine I (2) with BF3?Et2O/Bu4NBr can give rise to 4 different products. Each of these products can be obtained selectively, under the appropriate reaction conditions.
Multivariate statistical methods applied to interpretation of saturated biomarkers (Velebit oil field, se Pannonian basin, Serbia)
Authors: Solevic Tatjana , Stojanovic Ksenija , Jovancicevic Branimir , Mandic Gorica , Schwarzbauer Jan , Vitorovic Dragomir
Published: December 2006

Twenty-five crude oils originating from the Velebit oil field (SE Pannonian Basin), the most important oil field in Serbia, were investigated. Saturated biomarkers (n-alkanes, isoprenoids, steranes and triterpanes) were analyzed by gas chromatography-mass spectrometry (GC-MS). Based on the distribution and abundance of these compounds, a large number of source and maturation parameters were calculated, particularly those most often used in correlation studies of oils. The examined samples were classified according to their origin and level of thermal maturity using factor, cluster and discriminant analyses. According to the source and maturation parameters, combined factor and cluster analyses using the Ward method enabled the categorization of the investigated oils into three groups. The cluster Ward analysis was shown to be of greater susceptibility and reliability. However, in addition to the two aforementioned methods, K-Means cluster analysis and discriminant analysis were shown to be necessary for a more precise and detailed categorization in the case of a large number of samples in one group. Consequently, it was concluded that factor and cluster K-Means and Ward analyses can generally be used for the interpretation of saturated biomarkers in correlation studies of oils, but the observed results have to be checked, i.e., confirmed by discriminant analysis.
Phase equilibria in the In-Sb-Bi system at 300ºc
Authors: Minic Dusko , Manasijevic Dragan , Zivkovic Dragana , Zivkovic Z.
Published: December 2006

Binary thermodynamic data, successfully used for phase diagram calculations of the binary systems In-Sb, Bi-Sb and In-Bi, were used fort the prediction of phase equilibria in the ternary system In-Sb-Bi at 300?C. The predicted equilibria were compared with the results of SEM-EDX analysis.
Determination of sodium and potassium in certified rock samples by AES after ultrasonic leaching
Authors: Özkan Hikmet , Özkan Aysun , Gürkan Ramazan , Akçay Mehmed
Published: December 2006

In order to evaluate the data obtained by atomic emission spectrometric analysis after ultrasonic extraction, destructive analysis of some certified rock samples employing ultrasonic waves was applied to two elements, Na and K, and the recovery rates were defined. The recovery ratio as K1=CULM/CCRM was defined for the ultrasonic leaching method (CULM) and the certified reference materials (CRMs). Another recovery ratio, K 2 was also defined from the results of the conventional dissolution method (CCDM), that is K2 CULM/CCDM. The accuracy and precision of the method were comparable with those of the conventional methods. The obtained recoveries were between 90.0 %< K1, Na<106.1 and 90.0%<K2, Na<103.0 % for Na and 92.3%<K1, K<103.2 and 92.3%<K 2,K < 104.5%for K. It was shown that ultrasonic extraction can be effectively used for analytical sample preparation purposes.
Modeling of the adsorption kinetics of zinc onto granular activated carbon and natural zeolite
Authors: Markovska Ljiljana , Meshko Vera , Marinkovski Mirko
Published: December 2006

The isotherms and kinetics of zinc adsorption from aqueous solution onto granular activated carbon (GAC) and natural zeolite were studied using an agitated batch adsorber. The maximum adsorption capacities of GAC and natural zeolite towards zinc(II) from Langmuir adsorption isotherms were determined using experimental adsorption equilibrium data. The homogeneous solid diffusion model (HSD-model) combined with external mass transfer resistance was applied to fit the experimental kinetic data. The kinetics simulation study was performed using a computer program based on the proposed mathematical model and developed using gPROMS. As the two-mass transfer resistance approach was applied, two model parameters were fitted during the simulation study. External mass transfer and solid phase diffusion coefficients were obtained to predict the kinetic curves for varying initial Zn(II) concentration at constant agitation speed and constant adsorbent mass. For any particular Zn(II) - adsorbent system, k f was constant, except for the lowest initial concentration, while D s was found to increase with increasing initial Zn(II) concentration.
Cylinder symmetric measures with the tail property
Authors: Balkema Guus
Published: December 2006

A Pareto distribution has the property that any tail of the distribution has the same shape as the original distribution. The exponential distribution and the uniform distribution have the tail property too. The tail property characterizes the univariate generalized Pareto distributions. There are three classes of univariate GPDs: Pareto distributions, power laws, and the exponential distribution. All these distributions extend to infinite measures. The tail property translates into a group of symmetries for these infinite measures: translations for the exponential law; multiplications for the Pareto and power laws. In the multivariate case, for cylinder symmetric measures in dimension d >_ 3, there are seven classes of measures with the tail property, corresponding to five symmetry groups. The second part of this paper establishes this classification. The first part introduces the probabilistic setting, and discusses the associated geometric theory of multiparameter regular variation. We prove a remarkable result about a class of multiparameter slowly varying functions introduced in Ostrogorski [1995].
On some extensions of Karamata’s theory and their applications
Authors: Buldygin V.V. , Klesov O.I. , Steinebach J.G.
Published: December 2006

This is a survey of the authors? results on the properties and applications of some subclasses of (so-called) O-regularly varying (ORV) functions. In particular, factorization and uniform convergence theorems for Avakumovic-Karamata functions with non-degenerate groups of regular points are presented together with the properties of various other extensions of regularly varying functions. A discussion of equivalent characterizations of such classes of functions is also included as well as that of their (asymptotic) inverse functions. Applications are given concerning the asymptotic behavior of solutions of certain stochastic differential equations.
Asimptoticeski odnorodnye obobscennye funkcii
Authors: Drozzinov JU.N. , Zav'jalov B.
Published: December 2006

(ruski) Obobscennye funkcii medlennogo rosta, obladajuscie (kvazi)asimptotikoj na beskonecnosti v asimptoticeskoj skale pravil'no menjajuscihsja funkcij, nazyvajutsja asimptoticeski odnorodnymi. V castnosti, k ?tim funkcijam prinadlezat vse odnorodnye obobscennye funkcii. V rabote vvedeno sfericeskoe predstavlenie obobscennyh funkcij i v ego terminah daetsja polnoe opisanie asimptoticeski odnorodnyh obobscennyh funkcij. Polucennye rezul'taty primenjajutsja dlja izucenija osobennostej golomorfnyh funkcij v trubcatyh oblastjah nad konusami i v zadace o diffuzii mnogokomponentnyh vescestv.
Third order extended regular variation
Authors: Alves Fraga , Haan Laurens , Lin Tao
Published: December 2006

A theory of third order extended regular variation is developed, somewhat similar to the corresponding theories of first and second order.
Dopustimye funkcii dlja konusa i asimptotika bezgranicno delimyh raspredelenij
Authors: Jakymiv A.L.
Published: December 2006

Odnim iz vozmoznyh obobscenij pravil'no menjajuscihsja funkcij na mnogomernyj slucaj javljajutsja dopustimye funkcii dlja konusa. Dopustimye funkcii dlja proizvol'nogo zamknutogo vypuklogo ostrogo telesnogo n-mernogo konusa byli vvedeny Ju. N. Drozzinovym i B. I. Zav'jalovym v 1984 godu v svjazi s prilozenijami v tauberovoj teorii i matematiceskoj fizike. V nastojascej stat'e privodjatsja opredelenija i primery nekotoryh klassov dopustimyh funkcij konusa, a takze mnogomernye tauberovy teoremy dlja nih. V kacestve prilozenija v konce stat'i dana asimptotika na beskonecnosti bezgranicno delimyh raspredelenij s nositelem v proizvol'nom zamknutom vypuklom ostrom telesnom odnorodnom konuse iz Rn.
Genetic instability in the RAD51 and BRCA1 regions in breast cancer
Authors: Nowacka-Zawisza Maria , Bryś Magdalena , Romanowicz-Makowska Hanna , Kulig Andrzej , Krajewska Wanda
Published: December 2006

Breast cancer is the most prevalent cancer type in women. Accumulating evidence indicates that the fidelity of double-strand break repair in response to DNA damage is an important step in mammary neoplasias. The RAD51 and BRCA1 proteins are involved in the repair of double-strand DNA breaks by homologous recombination. In this study, we evaluated loss of heterozygosity (LOH) in the RAD51 and BRCA1 regions, and their association with breast cancer. The polymorphic markers D15S118, D15S214 and D15S1006 were the focus for RAD51, and D17S855 and D17S1323 for BRCA1. Genomic deletion detected by allelic loss varied according to the regions tested, and ranged from 29 to 46% of informative cases for the RAD51 region and from 38 to 42% of informative cases for the BRCA1 region. 25% of breast cancer cases displayed LOH for at least one studied marker in the RAD51 region exclusively. On the other hand, 31% of breast cancer cases manifested LOH for at least one microsatellite marker concomitantly in the RAD51 and BRCA1 regions. LOH in the RAD51 region, similarly as in the BRCA1 region, appeared to correlate with steroid receptor status. The obtained results indicate that alteration in the RAD51 region may contribute to the disturbances of DNA repair involving RAD51 and BRCA1 and thus enhance the risk of breast cancer development.
Tetraploid somatic hybrids of potato (Solanum tuberosum L.) obtained from diploid breeding lines
Authors: Przetakiewicz Jarosław , Nadolska-Orczyk Anna , Kuć Dominik , Orczyk Wacław
Published: December 2006

Intraspecific somatic hybrids between 16 different diploid breeding lines of Solanum tuberosum L. were produced by PEG-induced fusion. Manually selected heterokaryons were cultured in a Millicells-CM using a post-fusion protoplast mixture. Plants were regenerated from calli derived from heterokaryons obtained from 10 out of 38 combinations of diploid lines. Of the tested putative somatic hybrids, 14.2% were diploid, 72.8% were tetraploid and 13% pentaploid. The DNA amplification pattern obtained with RAPD or semi-random primers confirmed that 6 fusion combinations were hybrids. In most cases, the morphological traits were intermediate to those of the diploid fusion partners. About 23.0% of the tested somatic hybrids showed variation in their morphology. Of the tested somatic hybrids, 78.0% flowered and 86.0% tuberized. The cytoplasm of 9 diploid lines and 6 somatic hybrid combinations was analysed. Two of the diploid lines had W/S chloroplasts and α or ε mitochondria; the remainder contained T chloroplasts and β mitochondria. All the analysed somatic hybrids carried T chloroplasts and β mitochondria.
I'll keep you in mind: the intimacy function of autobiographical memory
Authors: Alea Nicole , Bluck Susan
Published: December 2006

An experimental study examined whether autobiographical memory serves the function of maintaining intimacy in romantic relationships. Young and older adults (N = 129) recalled either autobiographical relationship events or fictional relationship vignettes. Intimacy (warmth, closeness) was measured before and after remembering. Warmth was enhanced after recalling autobiographical events irrespective of individuals' age and gender; women also experienced gains in closeness. The role of memory characteristics (quality and content) in producing changes in intimacy was also examined. Personal significance of the autobiographical memory was the best predictor of warmth and closeness in the relationship, though how frequently the memory was thought or talked about, and how intimate the memory was also predicted levels of closeness, particularly for women. Results are discussed in terms of how autobiographical memories can be used to foster intimacy in romantic relationships across adulthood. Copyright © 2006 John Wiley & Sons, Ltd.
Atrazine Toxicity Reduction Following H2O2/TiO2‐Photocatalyzed Reaction and Comparison with H2O2‐Photolytic Reaction
Authors: Campanella Luigi , Vitaliano Rosa
Published: December 2006

An atrazine photodegradation study carried out by a Q‐Panel suntest apparatus is reported in this work. H2O2/TiO2 photocatalyzed reaction yield and parameters (time, irradiance, temperature, H2O2 (40 %) volume, TiO2 amount) were exactly determined relating to the used atrazine concentration. An experimental kinetic study was performed to establish the reaction order in fixed conditions. Using a biosensor method, 10‐4 M Atrazine solution toxicity and final photocatalytic reaction solution toxicity were quantitatively determined. A consistent toxicity decrease was observed on passing from the analyte to the products of the photocatalytic reaction. An analogous photolytic reaction carried out in absence of TiO2, but in the same experimental conditions of time, irradiance, temperature and H2O2 volume, brings to a toxicity increase.
Separation and Preconcentration of Ag(I) in Aqueous Samples by Flotation as an Ion‐Associate Using Iodide and Ferroin Followed the Determination by Flame Atomic Absorption Spectrometry
Authors: Hosseini Mohammad Saeid , Hashemi‐Moghaddam Hamid , Kardan‐Moghaddam Gholamreza
Published: December 2006

A simple method for separation/preconcentration and determination of Ag (I) in aqueous samples is described. The method is based on formation of an ion‐associate between Ag (I)‐iodide complex and ferroin, which can be floated at the interface of the aqueous/n‐heptane phases. The flotation process was carried out using 500‐ml aliquot of the aqueous solution and the floated layer was dissolved in 5 ml of 1 M HNO3 containing methanol (50% v/v) as the solvent. The Ag (I) content was then determined by flame atomic absorption spectrometry (FAAS). The method so could be considered as an enrichment process, was achieved to a quantitative feature, when the pH of the solution was adjusted to 4 and the concentrations of iodide and ferroin were about 3.2×10‐4 M and 6.25×10‐5 M, respectively. The LOD and RSD (n=7) were obtained 1.0×10‐8 M and 2.4%, respectively. It was found that a large number of cations and anions even at high considerably foreign ion/Ag(I) ratios were not interfered. The method was applied satisfactorily to recovery of Ag(I) from different aqueous samples.
Combination of Genetic Algorithm and Partial Least Squares for Cloud Point Prediction of Nonionic Surfactants from Molecular Structures
Authors: Ghasemi Jahanbakhsh , Ahmadi Shahin
Published: December 2006

Quantitative structure–property relationship (QSPR) analysis has been directed to a series of pure nonionic surfactants containing linear alkyl, cyclic alkyl, and alkey phenyl ethoxylates. Modeling of cloud point of these compounds as a function of the theoretically derived descriptors was established by multiple linear regression (MLR) and partial least squares (PLS) regression. In this study, a genetic algorithm (GA) was applied as a variable selection method in QSPR analysis. The results indicate that the GA is a very effective variable selection approach for QSPR analysis. The comparison of the two regression methods used showed that PLS has better prediction ability than MLR.
Thematic workshop on fluorescence compensation settings in multicolor flow cytometry
Authors: Bayer Jan , Grunwald Didier , Lambert Claude , Mayol Jean François , Maynadié Marc
Published: December 2006

In his program of thematic one‐day workshops, the French Association of Cytometry had organized a workshop dedicated to the fluorescence compensation settings in multicolor flow cytometry. This special day was in honor of our past President Jean Luc D'Hautcourt who has been involved in the quality of the use of flow cytometry in it's clinical and research purposes. Review on fluorescence phenomena, compensation rules, settings, and few observed confunding situations were presented. © 2006 Clinical Cytometry Society
Provision of quality of service in wireless fourth generation networks
Authors: Zarai Faouzi , Boudriga Noureddine
Published: December 2006

A key word describing next generation wireless networks is ‘seamless’. Wireless fourth generation (4G) networks represent a set of new technologies that will enable seamless integration of various wireless access systems, while targeting to support various sophisticated and quality of service constraining applications, such as high‐speed data services and multimedia services. This paper first proposes an architecture for 4G networks. The most significant feature of this architecture is its flexibility, openness and ability to enable seamless handoff in a single logical overlay network composed of many heterogeneous access networks. A medium access control (MAC) protocol for basic access networks is then introduced. A generic scheduling scheme, named CS‐EDF (channel state‐earliest deadline first) and the details of an efficient handoff management method are also briefly introduced. The bandwidth utilization, handoff resources reservation, and scheduling scheme performances of the proposed schemes are discussed. Copyright © 2006 John Wiley & Sons, Ltd.
Cover Picture: Investigating Direct Alkynylation at the Bridgehead of Bicyclic Cages Using Silver(I) Acetylides (Eur. J. Org. Chem. 2/2007)
Authors: Pouwer Rebecca H. , Harper Jason B. , Vyakaranam Kamesh , Michl Josef , Williams Craig M. , Jessen Carsten H. , Bernhardt Paul V.
Published: December 2006

The cover picture shows a rare, 80% silver, round Australian 50‐cent piece, which was introduced in 1966 when Australia changed currency from the Australian pound to the Australian dollar. It was later replaced with a copper/nickel dodecagonal (12‐sided) version in 1969. The coin underpins the reaction of a silver(I) acetylide with adamantyl iodide affording the bridgehead‐substituted adamantylacetylene. This new methodology has nanotechnological ramifications as discussed in the article by C. M. Williams et al. on p. 241 ff. Brett D. Schwartz is acknowledged for preparing the artwork for the cover picture.
Layer‐by‐Layer Assemblies of Montmorillonite and Bacterial Cytochromes for Bioelectrocatalytic Devices
Authors: Lojou E. , Bianco P.
Published: December 2006

Clay‐based layer‐by‐layer architectures are studied in view of the development of new electrode materials for two highly attractive enzymatic reactions: metal bioremediation and hydrogen uptake. The buildup of layer‐by‐layer (LBL) assemblies of positively charged specific mediators of these enzymatic reactions and negatively charged montmorillonite nanoparticles were carried out onto gold and graphite electrodes. The structure and stability of the assemblies were examined using quartz crystal microgravimetry (QCM) and electrochemical techniques. Satisfactory catalytic efficiencies were observed through the LBL construction, either for bacterial cytochrome c3‐mediated metal reduction, or hydrogen uptake via immobilized hydrogenase in the presence of an artificial shuttle, methylviologen. Interestingly, it is established that intercalating cytochrome c3 layers between hydrogenase/montmorillonite layers not only protects hydrogenase from leaching, but allows H2 uptake/evolution catalytic reaction without any additional diffusing redox mediator.
Electrostatic Assembly of a Redox Catalysis System for Detection of Glutamate
Authors: Harper Alice C. , Anderson Mark R.
Published: December 2006

Interfacial assemblies capable of determining glutamate by redox catalysis are prepared by electrostatic assembly of alternating layers of ferrocene poly(allylamine) polymer and glutamate oxidase on a gold electrode. Deposition of the polymer was confirmed in cyclic voltammetry measurements by the presence of a surface wave corresponding to the oxidation of the ferrocene group. In the presence of glutamate in the adjacent electrolyte solution, the current increases and approaches a pseudosteady state, consistent with redox catalysis. Electrodes modified with glutamate oxidase had a linear response to glutamate up to 0.0045 M with sensitivity of 20 μA/cm2 and a limit of detection of 31.4 μM glutamate. An apparent Michaelis–Menten constant of 0.40(±0.13) mM for the confined glutamate oxidase was determined for this assembly. When used in flow‐injection experiments, glucose oxidase modified electrodes responded to transient zones of glucose; however, the detection limits of the assemblies to the flowing stream were substantially higher than found for measurements on static solutions.
Components from Sri Lankan Piper betle L. leaf oil and their analogues showing toxicity against the housefly, Musca domestica
Authors: Mohottalage Susantha , Tabacchi Raffaele , Guerin Patrick M.
Published: December 2006

The essential oil extracted from Piper betle L. leaf using pilot plant steam distillation was tested against the adult housefly, Musca domestica, for insecticidal activity. LC50 values at the end of 24 and 48 h exposure periods were 10.3 and 8.7 mg/dm3, respectively. Ceylon citronella oil (Cymbopogon nardus) used as a standard showed LC50s of 26.5 and 24.2 mg/dm3 for the same exposure periods. Bioassay‐guided fractionation of P. betle leaf oil revealed safrole and eugenol as the active principles against M. domestica, safrole showing LC50 values of 4.8 and 4.7 mg/dm3, and eugenol 7.3 and 6.2 mg/dm3 for the 24 and 48 h exposure periods, respectively, while citronellal (synthetic standard) showed equal LC50 values of 14.3 mg/dm3 for the same exposure periods. Using safrole as the starting compound, eight analogues were prepared to study structure–activity relationships. Among the eight analogues, dihydrosafrole gave almost equal mortality at LC50 4.7 mg/dm3 as that of the parent compound safrole after 24 and 48 h exposure, but isosafrole was twice as active as safrole, showing LC50 values of 2.3 and 2.2 mg/dm3 for the 24 and 48 h exposure periods. Our GC–MS studies on Sri Lankan P. betle leaf oil show that it contains safrole (52.7%), allylpyrocatechol diacetate (15.4%), eugenol (6.4%) and eugenyl acetate (5.8%) as the major components. Here we also present the GC–MS profile of fractions of Sri Lankan P. betle leaf oil. Copyright © 2006 John Wiley & Sons, Ltd.
Numerical and comparative study of the agility of planar transmission lines printed on a ferroelectric thin film
Authors: Moussavou A.‐G. , Bouquet V. , Sauleau R. , Perrin A. , Guilloux‐Viry M. , Mahdjoubi K.
Published: December 2006

In this article, we report on simulation results at 10 GHz of planar transmission lines printed on a ferroelectric thin film deposited on sapphire and lanthanum aluminate substrates. The ferroelectric film permittivity is supposed to vary from 700 to 500. First, the main properties of microstrip (MS), coplanar waveguide (CPW) and coplanar strips (CS) namely their effective permittivity, characteristic impedance, and insertion loss are computed as a function of the physical and electrical parameters. Then their tunability and figure of merit are defined and compared. CPW and CS lines present a tunability (Δϵeff/ϵeff_max) of about 16% for a gap value g = 30 μm. The MS lines show a much less tenability of 2%. Moreover, the figure of merit of CPW and CS configurations are of 6.3 and 12.2%/dB for a gap value of 30 μm, respectively. By increasing the gap, these figures of merit can be improved up to the limiting values of 8.7% and 15.4%/dB, respectively. © 2006 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 280–285, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22106
High resolution ultrawideband wall penetrating radar
Authors: Engin Erman , Çiftçioğlu Berkehan , Özcan Meriç , Tekin İbrahim
Published: December 2006

A high resolution ultra wideband radar prototype is developed for various applications through the wall imaging. The frequency range of operation of the radar is selected to be 1.85–6 GHz in order to have high spatial resolution. Besides the hardware, we have also developed a custom image processing software which attacks the problem of false target recognition and rejection. In this article, we present our prototype along with various experimental results such as detecting stationary targets and detecting respiratory activity of a human behind a 23 cm thick brick wall. © 2006 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 320–325, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22112
Propagation characteristics of complementary split‐ring resonator for wide bandgap enhancement in microstrip bandpass filter
Authors: Wu Hung‐Wei , Weng Min‐Hang , Su Yan‐Kuin , Yang Ru‐Yuan , Hung Cheng‐Yuan
Published: December 2006

This investigation discusses the propagation characteristics of single complementary split‐ring resonator (CSRR) in planar transmission media. To characterize the single CSRR, the effective electromagnetic parameters, such as highly frequency dependence of normalized attenuation constant (α(f)/k0), normalized phase constant (dispersion relation) β(f)/k0, and characteristic impedance (Z0(f)) are extracted with the full wave electromagnetic (EM) simulation and measurement. Additionally, the wide bandgap characteristics of periodic CSRRs are also discussed. Finally, we applied the periodic CSRRs to suppress the harmonics of the conventional dual‐mode ring bandpass filter (BPF) by using the propagation characteristics of the periodic CSRRs. The experimental results agree well with the simulated results. © 2006 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 292–295, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22121
New 0.18‐μm CMOS pulse generator for impulse radio ultra‐wideband communication systems
Authors: Tzou Tung‐Yuan , Chen Fu‐Chiarng
Published: December 2006

This article presents a new circuit to generate a higher‐order derivative Gaussian pulse for the impulse radio ultra‐wideband (IR‐UWB) communication systems. This IR‐UWB pulse generator is designed and measured with the TSMC 0.18‐μm CMOS process. The circuit is able to generate a symmetrical and low‐ringing pulse in a frequency band from 3.1 to 10.6 GHz. Our work shows that the pulse generator's output pulse width is 500 ps with an amplitude of 40 mV (peak to peak). The measurement results validate our design and the circuit functionality. © 2006 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 342–345, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22132