bluuebunny/crossref_metadata_2025 huggingface dataset:
Anthropometric reference values in an Afro‐Caribbean adolescent population
Authors: Nichols Selby D. , Cadogan Frances I.
Published: October 2007

Childhood and adolescent obesity is increasingly becoming a major public health issue in the Caribbean. In this study, we analyze patterns of growth in a population of Afro‐Caribbean adolescents 12–18 years old and to compare these with those established for US adolescents. A cross‐section of adolescent schoolchildren had weight and height measured using standardized procedures. In addition, percentage body fat (% BF) was measured using a foot‐to‐foot bioelectric impedance body fat analyzer (Tanita model 531). Selected age‐ and gender‐ specific percentiles of BMI, %BF, weight and height were derived and smoothed by cubic splines. These were compared with similar percentiles from US adolescent growth data. A total of 3,707 adolescents (1,585 males; 2,122 females) participated in the study. The age‐specific correlation between BMI and %BF ranged from 0.75 to 0.87 in males and 0.79 to 0.87 in females. Females had significantly higher %BF than males in each age category. Overall, Tobagonian females were heavier and had higher BMI than their US counterparts especially levels above the median percentiles. Tobagonian males had similar height, weight, and BMI to their US counterparts over the range of percentiles. Overall, the pattern of growth in this group of adolescents suggests that they are growing at rates that are comparable to those seen in a more well‐nourished population. Am. J. Hum. Biol., 2008. © 2007 Wiley‐Liss, Inc.
A fingerprint characteristic associated with the early prenatal environment
Authors: Kahn Henry S. , Graff Mariaelisa , Stein Aryeh D. , Zybert Patricia A. , McKeague Ian W. , Lumey L. H.
Published: October 2007

Fingerprints and fingertip ridge counts (RCs) have a significant genetic component. However, they also reflect the nongenetic environment of early pregnancy, an important time window for tissue differentiation and organogenesis. Fingerprints are permanently configured before the 20th week of gestation, and each fingertip's RC is related to the growth and regression of its early fetal volar pads. Rostral and caudal aspects of the embryonic limb bud have different relations to somite segments and to morphogen‐activator functions. We hypothesized, therefore, that early fetal circumstances would be associated with a contrast in RCs between the thumb (digit 1) and little finger (digit 5). We obtained RCs from the fingerprints of a sample of 658 Dutch adults identified through prenatal and delivery records of Dutch urban births occurring during 1943–1947, an historical era that included months of wartime disruption with a winter famine. We calculated the mean of left‐ and right‐hand RC differences between digits 1 and 5 (Md15). The Md15 fluctuated in relation to the calendar season of the mother's last menstrual period, but only if the gestation occurred outside of the wartime disruption interval. If the gestation occurred during the disruption interval, the Md15 seasonal fluctuation was not evident. This finding suggests that parental environmental factors may influence the fingerprints of the offspring. Fingerprint RC differences observed in postnatal life may be useful in the study of metabolic or anatomic programming related to the early prenatal environment. Am. J. Hum. Biol., 2008. Published 2007 Wiley‐Liss, Inc.
Fractionation and characterization of an ethylene–propylene copolymer produced with a MgCl2/SiO2/TiCl4/diester‐type ziegler–natta catalyst
Authors: Dong Qi , Fan Zhi‐Qiang , Fu Zhi‐Sheng , Xu Jun‐Ting
Published: October 2007

An ethylene–propylene copolymer synthesized with a Ziegler–Natta catalyst was fractionated by a combination of dissolution/precipitation and temperature‐gradient extraction fractionation. The fractions were characterized with 13C‐NMR, differential scanning calorimetry, and wide‐angle X‐ray diffraction. The fractionation was carried out mainly with respect to the content of ethylene, but the crystallizable propylene sequences could also exert an influence on the fractionation. The copolymer contained a series of components with wide variations in the compositions. With an increase in the ethylene content, the structure of the fractions became blockier and blockier, and the fraction extracted at 111°C had the blockiest structure. A further increase in the ethylene content led to a decrease in the length and number of the propylene sequences. Differential scanning calorimetry results showed that the composition distribution in single fractions was not homogeneous, and multiple melting peaks were observed. Wide‐angle X‐ray diffraction results revealed both polyethylene and polypropylene crystals in most of the fractions. Short propylene sequences could be included in the polyethylene crystals, and short ethylene sequences could also be incorporated into the polypropylene crystals. The incorporation of propylene sequences into polyethylene crystals strongly depended on the sequence distribution and crystallization conditions. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci, 2008
Sorption properties of the iminodiacetate ion exchange resin, amberlite IRC‐718, toward divalent metal ions
Authors: Noureddine Charef , Lekhmici Arrar , Mubarak Mohammad S.
Published: October 2007

The sorption properties of the commercially available cationic exchange resin, Amberlite IRC‐718, that has the iminodiacetic acid functionality, toward the divalent metal‐ions, Fe2+, Cu2+, Zn2+, and Ni2+ were investigated by a batch equilibration technique at 25°C as a function of contact time, metal ion concentration, mass of resin used, and pH. Results of the study revealed that the resin exhibited higher capacities and a more pronounced adsorption toward Fe2+ and that the metal‐ion uptake follows the order: Fe2+ > Cu2+> Zn2+ >Ni2+. The adsorption and binding capacity of the resin toward the various metal ions investigated are discussed. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci, 2008
Enhancement of melt elasticity for poly(3‐hydroxybutyrate‐co‐3‐hydroxyvalerate) by addition of weak gel
Authors: Arakawa Keiichi , Yokohara Tadashi , Yamaguchi Masayuki
Published: October 2007

Rheological properties in a molten state are studied extensively for poly(3‐hydroxybutyrate‐co‐3‐hydroxyvalerate), PHB‐HV, with a small amount of crosslinked poly(epichlorohydrin), PECH, having low density of crosslink points. It is found that adding 2 wt % of xPECH greatly enhances the melt elasticity of PHB‐HV, one of the serious defects of microbial PHB, whereas it has no effect on the shear viscosity. As a result, viscoelastic nature, and thus processability, of PHB‐HV can be controlled by blending the crosslinked PECH. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci, 2008
Mechanical properties and water absorption of low‐density polyethylene/sawdust composites
Authors: Kamel Samir , Adel Abeer M. , El‐Sakhawy Mohamed , Nagieb Zenat A.
Published: October 2007

The mechanical properties and water absorption of low‐density polyethylene/sawdust composites were investigated. The relationship between the filler content and the composite properties was also studied. Different degrees of esterification of the sawdust with maleic anhydride were obtained with different reaction times. The experimental results demonstrated that the treatment of sawdust by maleic anhydride enhanced the tensile and flexural strengths. The water absorption for maleic anhydride treated sawdust indicated that it was more hydrophobic than untreated sawdust. The effects of the addition of benzoyl peroxide during the preparation of composite samples on the water absorption and mechanical properties were also evaluated. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci, 2008
Thermal and mechanical properties of a poly(ϵ‐caprolactone)/graphite oxide composite
Authors: Kai Weihua , Hirota Yuuki , Hua Lei , Inoue Yoshio
Published: October 2007

The effect of graphite oxide (GO) as the enforcing filler on the properties of poly(ϵ‐caprolactone) (PCL) was investigated in this study. Through the introduction of GO, the Young's modulus of PCL was increased from 340 to 1000 MPa, and the tensile strength of PCL was increased from 15 to 26 MPa. Furthermore, the interlayer distance of GO (0.6 nm) was found to expand to 1.1 nm in the PCL/GO composite, which indicated the intercalation of the PCL chain into the GO layers. Because of this intercalation structure of the PCL/GO composite, GO showed a higher reinforcing effect than graphite on the mechanical properties of PCL. The intercalation should have enabled much effective load transfer in the PCL/GO composites. Moreover, GO showed a nucleating effect toward the crystallization of PCL, as the nonisothermal crystallization peak temperature shifted from 25°C for pure PCL to about 34°C for the PCL/GO composites. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci, 2008
Intercellular Communication Within the Rat Anterior Pituitary: XIV Electron Microscopic and Immunohistochemical Study on the Relationship Between the Agranular Cells and GnRH Neurons in the Dorsal Pars Tuberalis of the Pituitary Gland
Authors: Shirasawa Nobuyuki , Sakuma Eisuke , Wada Ikuo , Naito Akira , Horiuchi Osamu , Mabuchi Yoshio , Kanai Miharu , Herbert Damon C. , Soji Tsuyoshi
Published: October 2007

Although numerous investigators in 1970s to 1980s have reported the distribution of LH‐RH nerve fibers in the median eminence, a few LH‐RH fibers have been shown to be present in the pars tuberalis. The significance of the finding remains to be elucidated, and there are few studies on the distribution of LH‐RH neurons in the pars tuberalis, especially in the dorsal pars tuberalis (DPT). Adult male Wistar‐Imamichi rats were separated into two groups: one for electron microscopy and the other for immunohistochemistry to observe LH‐RH and neurofilaments. Pituitary glands attached to the brain were fixed by perfusion, and the sections were prepared parallel to the sagittal plane. The typical glandular structure of the pars tuberalis was evident beneath the bottom floor of the third ventricle, and the thick glandular structure was present in the foremost region. Closer to the anterior lobe, the glandular structure changed to be a thin layer, and it was again observed at the posterior portion. Then the pituitary stalk was surrounded with the dorsal, lateral, and ventral pars tuberalis. LH‐RH and neurofilaments fibers were noted in the bottom floor, and some of them vertically descended to the gland. Adjacent to the glandular folliculostellate cells in the pars tuberalis, Herring bodies with numerous dense granules invading into the gland were present between the pituitary stalk and DPT. It was postulated that the “message” carried by LH‐RH might have been transmitted to the cells in the DPT to aid in the modulation of LH release. Anat Rec, 290:1388–1398, 2007. © 2007 Wiley‐Liss, Inc.
Relevance: A review of the literature and a framework for thinking on the notion in information science. Part III: Behavior and effects of relevance
Authors: Saracevic Tefko
Published: October 2007

All is flux.

—Plato on Knowledge in the Theaetetus (about 369 BC)

Relevance is a, if not even the, key notion in information science in general and information retrieval in particular. This two‐part critical review traces and synthesizes the scholarship on relevance over the past 30 years or so and provides an updated framework within which the still widely dissonant ideas and works about relevance might be interpreted and related. It is a continuation and update of a similar review that appeared in 1975 under the same title, considered here as being Part I. The present review is organized in two parts: Part II addresses the questions related to nature and manifestations of relevance, and Part III addresses questions related to relevance behavior and effects. In Part II, the nature of relevance is discussed in terms of meaning ascribed to relevance, theories used or proposed, and models that have been developed. The manifestations of relevance are classified as to several kinds of relevance that form an interdependent system of relevancies. In Part III, relevance behavior and effects are synthesized using experimental and observational works that incorporated data. In both parts, each section concludes with a summary that in effect provides an interpretation and synthesis of contemporary thinking on the topic treated or suggests hypotheses for future research. Analyses of some of the major trends that shape relevance work are offered in conclusions.
Information systems project post‐mortems: Insights from an attribution perspective
Authors: Pan Gary , Pan Shan L , Newman Michael
Published: October 2007

Information systems (IS) project failure is a costly and common problem. This is despite advances in development tools and technologies. In this article, we argue that one reason for this is the failure of project post‐mortems to generate constructive “lessons learned” from previous projects. Over time, the ineffective practices would persist in the organization, rendering it resistant to change. The attribution theory literature serves as one of the few promising theoretical bases to explain why project post‐mortems fail. A case study of a project post‐mortem undertaken for an abandoned electronic procurement system project is discussed and analyzed. We identify five antecedent conditions of attribution error: the presence of self‐appointed mindsets, the general persistence of negative beliefs, memory decay, selective recall of project events and the influence of power dynamics within the organization. We discuss the research and practical implications of these findings and suggest how the problem of attribution error may be minimized in project post‐mortems.
Millimeter wave dosimetry of human skin
Authors: Alekseev S.I. , Radzievsky A.A. , Logani M.K. , Ziskin M.C.
Published: October 2007

To identify the mechanisms of biological effects of mm waves it is important to develop accurate methods for evaluating absorption and penetration depth of mm waves in the epidermis and dermis. The main characteristics of mm wave skin dosimetry were calculated using a homogeneous unilayer model and two multilayer models of skin. These characteristics included reflection, power density (PD), penetration depth (δ), and specific absorption rate (SAR). The parameters of the models were found from fitting the models to the experimental data obtained from measurements of mm wave reflection from human skin. The forearm and palm data were used to model the skin with thin and thick stratum corneum (SC), respectively. The thin SC produced little influence on the interaction of mm waves with skin. On the contrary, the thick SC in the palm played the role of a matching layer and significantly reduced reflection. In addition, the palmar skin manifested a broad peak in reflection within the 83–277 GHz range. The viable epidermis plus dermis, containing a large amount of free water, greatly attenuated mm wave energy. Therefore, the deeper fat layer had little effect on the PD and SAR profiles. We observed the appearance of a moderate SAR peak in the therapeutic frequency range (42–62 GHz) within the skin at a depth of 0.3–0.4 mm. Millimeter waves penetrate into the human skin deep enough (δ = 0.65 mm at 42 GHz) to affect most skin structures located in the epidermis and dermis. Bioelectromagnetics 29:65–70, 2008. © 2007 Wiley‐Liss, Inc.
Mobile telephone use effects on peripheral audiovestibular function: A case–control study
Authors: Bamiou Doris‐Eva , Ceranic Borka , Cox Robin , Watt Hilary , Chadwick Philip , Luxon Linda M
Published: October 2007

Low level radio‐frequency (RF) signals may produce disorientation, headache and nausea. This double blind study tested nine case‐subjects, who complained of various symptoms after prolonged mobile telephone use and 21 control subjects. Each subject underwent a series of trials, in which a dummy mobile telephone exposure system was held to each ear for 30 min in (a) pulsed, (b) continuous RF emission or, (c) no emission test modes. In the active pulsed and continuous modes the same mean power as the output of a typical handset was delivered at a carrier frequency of 882 MHz and at a maximum specific absorption rate (SAR) value of 1.3 W kg−1 (± 30%). In Experiment I (auditory), transient evoked otoacoustic emissions (TEOAE), which assess the outer hair cells in the inner ear, were conducted. In Experiment II (vestibular) the vestibulo‐ocular reflex was recorded by video‐oculography (VOG), at baseline and immediately post exposure. There were no significant TEOAE changes from baseline to post‐exposure recording for any of the exposures and no significant differences in the TEOAEs' change from baseline to post exposure between cases and controls. The VOG did not identify any effect of the exposure on the vestibular end organ in either cases or controls. In conclusion, 30 min exposure to mobile phone RF did not show any immediate effects on vestibulocochlear function as measured by TEOAE and the VOR. Bioelectromagnetics 29:108–117, 2008. © 2007 Wiley‐Liss, Inc.
Evaluation of O-POSSUM in predicting in-hospital mortality after resection for oesophageal cancer
Authors: Lagarde S M , Maris A K D , de Castro S M M , Busch O R C , Obertop H , van Lanschot J J B
Published: October 2007

Background

The aims of the present study were to validate the Physiological and Operative Severity Score for the enUmeration of Mortality adjusted for oesophagogastric surgery (O-POSSUM).

Methods

Data on patients who underwent potentially curative oesophagectomy in a tertiary referral centre for adenocarcinoma or squamous cell carcinoma of the oesophagus were analysed. The in-hospital mortality predicted by O-POSSUM was compared with the actual value by linear analysis.

Results

Twenty-four (3·6 per cent) of 663 patients died in hospital. The observed : predicted ratio for in-hospital mortality was 0·29. The model had a poor fit (P < 0·001). The area under the receiver–operator characteristic curve was 0·60 (95 per cent confidence interval 0·47 to 0·72); P = 0·113). O-POSSUM score was not related to the severity of complications.

Conclusion

O-POSSUM overpredicted in-hospital mortality threefold and could not identify patients at higher risk of death. O-POSSUM needs substantial modification before it can be used for comparison of treatment outcomes between centres.
P-glycoprotein expression is associated with sestamibi washout in primary hyperparathyroidism
Authors: Gupta Y , Ahmed R , Happerfield L , Pinder S E , Balan K K , Wishart G C
Published: October 2007

Background

The detection of parathyroid adenomas by 99mTc-labelled hexakis 2-methoxyisobutyl isonitrile (sestamibi) scintigraphy is influenced by several factors, including tumour size and serum level of parathyroid hormone (PTH). This study examined the relationship between sestamibi accumulation and multidrug resistance (MDR)-related P-glycoprotein (P-gp) expression in a large series of surgically excised parathyroid tumours.

Methods

Seventy-eight patients underwent dual-phase sestamibi imaging before parathyroidectomy. Expression of P-gp within tumour cells was assessed by immunohistochemistry. Tumour size was measured and the ellipsoid volume calculated. Scan results were analysed in relation to preoperative serum levels of calcium and PTH, P-gp expression and tumour volume.

Results

Sixty-four of the 78 sestamibi scans were positive and 14 negative. Smaller adenomas (less than 0·5 cm3) were more likely to be sestamibi negative than larger lesions (P = 0·006). Ten of 14 adenomas with negative imaging showed strong P-gp membrane positivity and 45 of 64 lesions with a positive scan did not show P-gp membrane expression, indicating a significant association between high P-gp membrane immunoreactivity and negative sestamibi result (P = 0·006).

Conclusion

These data suggest an association between P-gp membrane expression and false-negative sestamibi scan result. Inhibition of the P-gp transmembrane pump using MDR modulators may therefore improve the sensitivity of sestamibi scintigraphy.
Theoretical Study of Reaction Pathways to Borazine
Authors: Nutt W. Rodger , McKee Michael L.
Published: October 2007

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Novel Large Aluminophosphite Cage Unit as the Building Blocks to Form a Framework Structure Containing Multidimensional 12‐Ring Channels.
Authors: Lu Ailing , Song Haibin , Li Niu , Xiang Shouhe , Guan Naijia , Wang Honggen
Published: October 2007

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Ga24Br18Se2: A Highly Symmetrical Metalloid Cluster and Its One‐Dimensional Arrangement in the Crystalline State as a Model for the Photoconductivity of Solid GaSe.
Authors: Hartig Jens , Kloewer Frederik , Rinck Julia , Unterreiner Andreas‐Neil , Schnoeckel Hansgeorg
Published: October 2007

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Silver Aggregation Caused by Stanna‐closo‐dodecaborate Coordination: Syntheses, Solid‐State Structures and Theoretical Studies.
Authors: Hagen Siegbert , Schubert Hartmut , Maichle‐Moessmer Caecilia , Pantenburg Ingo , Weigend Florian , Wesemann Lars
Published: October 2007

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Asymmetric Aldol Reactions under Normal and Inverse Addition Modes of the Reagents.
Authors: Hajra Saumen , Giri Aswini Kumar , Karmakar Ananta , Khatua Snehadrinarayan
Published: October 2007

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Palladium(II)‐Catalyzed Conjugate Addition of Arylsiloxanes in Water.
Authors: Lerebours Rachel , Wolf Christian
Published: October 2007

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Eco‐Friendly Synthesis of Novel Lariat Ethers via Mannich Reaction under Solventless Conditions.
Authors: Sharghi Hashem , Khalifeh Reza
Published: October 2007

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Regio‐ and Stereoselective Synthesis of Enamides and Dienamides by Ruthenium‐Catalyzed Co‐Oligomerization of N‐Vinylamides with Alkenes or Alkynes.
Authors: Tsujita Hiroshi , Ura Yasuyuki , Matsuki Shingo , Wada Kenji , Mitsudo Take‐aki , Kondo Teruyuki
Published: October 2007

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Enantioselective Synthesis of Trifluoromethyl‐Substituted Cyclopropanes.
Authors: Denton Justin R. , Sukumaran Dinesh , Davies Huw M. L.
Published: October 2007

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Asymmetric Cyclopropanation with Diazoacetates Induced by Carbohydrate‐Derived Chiral Auxiliaries.
Authors: Ferreira Vitor F. , Leao Raquel A. C. , da Silva Fernando de C. , Pinheiro Sergio , Lhoste Paul , Sinou Denis
Published: October 2007

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
A Concise Synthesis of Enantioenriched Fluorinated Carbocycles.
Authors: Lam Yu‐hong , Bobbio Carla , Cooper Ian R. , Gouverneur Veronique
Published: October 2007

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Microwave‐Assisted Oxidative Coupling of Amines to Imines on Solid Acid Catalysts.
Authors: Landge Shainaz M. , Atanassova Valentina , Thimmaiah Muralidhara , Toeroek Bela
Published: October 2007

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Synthesis and Asymmetric Enantioselective Addition of Chiral Polybinaphthyl and Polybinaphthol Ligands.
Authors: Zou Xiao‐Wei , Ye Huai‐Chi , Zhang Shu‐Wei , Liu Yan , Wang Chun‐Yan , Cheng Yi‐Xiang
Published: October 2007

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Novel Synthesis of 2‐Amino‐1,4‐benzoquinone‐4‐phenylimides from Anilines via Dess—Martin Periodinane Oxidation.
Authors: Ma Heng Chang , Jiang Xuan Zhen
Published: October 2007

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Rearrangement of Propargylic Esters: Metal‐Based Stereospecific Synthesis of (E)‐ and (Z)‐Knoevenagel Derivatives.
Authors: Barluenga Jose , Riesgo Lorena , Vicente Ruben , Lopez Luis A. , Tomas Miguel
Published: October 2007

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Nitration of Ethyl Carbamates of Phenylenediamines and Aniline.
Authors: Davis Matthew C.
Published: October 2007

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
A New, Efficient and Stereoselective Synthesis of Tricyclic and Tetracyclic Compounds by Samarium Diiodide Induced Cyclizations of Naphthyl‐Substituted Arylketones — An Easy Access to Steroid‐Like Skeletons.
Authors: Aulenta Francesca , Berndt Mathias , Bruedgam Irene , Hartl Hans , Soergel Sebastian , Reissig Hans‐Ulrich
Published: October 2007

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Centrohexaindans Bearing Methyl Groups in Their Molecular Propellane Cavities.
Authors: Kuck D. , Hackfort T. , Neumann B. , Stammler H.‐G.
Published: October 2007

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Strained Azetidinium Ylides: New Reagents for Epoxidation.
Authors: Alex Audrey , Larmanjat Benedicte , Marrot Jerome , Couty Francois , David Olivier
Published: October 2007

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Palladium(II)‐Mediated Aziridination of Olefins with Bromamine‐T as the Nitrogen Source: Scope and Mechanism.
Authors: Antunes Alexandra M. M. , Bonifacio Vasco D. B. , Nascimento Susana C. C. , Lobo Ana M. , Branco Paula S. , Prabhakar Sundaresan
Published: October 2007

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Reaction of 3‐Methylenedihydro‐(3H)furan‐2‐one with Diazoalkanes. Synthesis and Crystal Structures of Spiranic Cyclopropyl Compounds.
Authors: Roussel Christophe , Ciamala Kabula , Vebrel Joel , Knorr Michael , Kubicki Marek M.
Published: October 2007

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Synthesis of Pyrazolinyl Heterocycles via Adenine‐ or Imidazole‐Containing Nitrilimine Cycloaddition.
Authors: Foti Francesco , Grassi Giovanni , Liotta Claudia , Risitano Francesco
Published: October 2007

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Synthesis of 2‐Arylsubstituted Imidazolone Derivatives.
Authors: Kang Joo Hi , Moon Jong Taik , Kim Jungahn , Joo Dong Jun , Lee Jae Yeol
Published: October 2007

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Novel and Potent 3‐(2,3‐Dichlorophenyl)‐4‐(benzyl)‐4H‐1,2,4‐triazole P2X7 Antagonists.
Authors: Carroll William A. , Kalvin Douglas M. , Perez‐Medrano Arturo , Florjancic Alan S. , Wang Ying , Donnelly‐Roberts Diana L. , Namovic Marian T. , Grayson George , Honore Prisca , Jarvis Michael F.
Published: October 2007

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Benzothiazines in Organic Synthesis. The Preparation of Enantiomerically Pure 4‐Substituted Quinolones.
Authors: Harmata Michael , Hong Xuechuan
Published: October 2007

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Unusual Bromination of 9‐Cyano‐10‐methylacridan.
Authors: Lee In‐Sook Han , Lee Chang Kiu
Published: October 2007

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Antiproliferative and Apoptosis Inducing Properties of Pyrano[3,2‐c]pyridones Accessible by a One‐Step Multicomponent Synthesis.
Authors: Magedov Igor V. , Manpadi Madhuri , Evdokimov Nikolai M. , Elias Eerik M. , Rozhkova Elena , Ogasawara Marcia A. , Bettale Jennifer D. , Przheval'skii Nikolai M. , Rogelj Snezna , Kornienko Alexander
Published: October 2007

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
A Facile Synthesis and Herbicidal Activities of Novel Fluorine‐Containing Thiazolo[4,5‐d]pyrimidin‐7(6H)‐ones.
Authors: Liang Ying , Fan Shuang , Mo Wen Yan , He Hong Wu
Published: October 2007

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
The Reaction of Polyhalonitrosoarenes with 1‐Morpholinocyclohexene.
Authors: Gornostaev L. M. , Geets N. V. , Bocharova E. A. , Stashina G. A. , Firgang S. I.
Published: October 2007

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Bromodecarboxylation of (E)‐3‐Aryl‐2‐(diethoxyphosphoryl)acrylic Acids: A Facile Route to Diethyl Arylethynylphosphonates.
Authors: Krawczyk Henryk , Albrecht Lukasz
Published: October 2007

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Structure of Cymbidine A, a Monomeric Peptidoglycan‐Related Compound with Hypotensive and Diuretic Activities, Isolated from a Higher Plant, Cymbidium goeringii (Orchidaceae).
Authors: Watanabe Kinzo , Tanaka Rina , Sakurai Hitomi , Iguchi Kazuo , Yamada Yasuji , Hsu Chau‐Shin , Sakuma Chiseko , Kikuchi Hiroyuki , Shibayama Humio , Kawai Tadahide
Published: October 2007

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Aromatic Electrophilic Substitutions on Vindoline.
Authors: Gorka‐Kereskenyi Almos , Szabo Lajos , Hazai Laszlo , Lengyel Miklos , Szantay Csaba Jr. , Santa Zsuzsanna , Kalaus Gyoergy , Szantay Csaba
Published: October 2007

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Efficient, Two‐Step Synthesis of N‐Substituted Nortropinone Derivatives.
Authors: Willand Nicolas , Folleas Benoit , Boutillon Christophe , Verbraeken Liesbeth , Gesquiere Jean‐Claude , Tartar Andre , Deprez Benoit
Published: October 2007

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Straightforward C‐8 Alkylation of 2′(or 3′)‐Azidoadenosine Derivatives by Utilizing Pd(0) Catalyst and Tetraalkyltin.
Authors: Kim Beom‐Tae , Moon Woo Sung , Lee Jin‐Ho , Hwang Ki‐Jun
Published: October 2007

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
The Constituents from the Stems of Garcinia cowa Roxb. and Their Cytotoxic Activities.
Authors: Shen Jie , Tian Ze , Yang Jun‐Shan
Published: October 2007

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Chivosazole A — Elucidation of the Absolute and Relative Configuration.
Authors: Janssen Dominic , Albert Dieter , Jansen Rolf , Mueller Rolf , Kalesse Markus
Published: October 2007

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Dy—Fe—Sn (Dysprosium—Iron—Tin)
Authors: Raghavan V.
Published: October 2007

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Multiferroicity and Colossal Magneto‐Capacitance in Cr‐Thiospinels
Authors: Hemberger J. , Lunkenheimer P. , Fichtl R. , Weber S. , Tsurkan V. , Loidl A.
Published: October 2007

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Fluorine Chemistry: Past, Present and Future
Authors: Dinoiu Vasile
Published: October 2007

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Pyridin‐2(1H)‐ones: A Promising Class of HIV‐1 Non‐Nucleoside Reverse Transcriptase Inhibitors
Authors: Medina‐Franco Jose Luis , Martinez‐Mayorga Karina , Juarez‐Gordiano Cecilia , Castillo Rafael
Published: October 2007

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Two‐Photon Polymerization of Three‐Dimensional Photonic Devices in Polymers and Nanocomposites
Authors: Jia Baohua , Li Jiafang , Gu Min
Published: October 2007

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Metal‐Mediated Reactivity in the Organic Solid State: From Self‐Assembled Complexes to Metal—Organic Frameworks
Authors: Georgiev Ivan G. , MacGillivray Leonard R.
Published: October 2007

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Clicking Polymers: A Straightforward Approach to Novel Macromolecular Architectures
Authors: Fournier David , Hoogenboom Richard , Schubert Ulrich S.
Published: October 2007

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
S‐Adenosyl‐L‐homocysteine Hydrolase as an Attractive Target for Antimicrobial Drugs
Authors: Nakanishi Masayuki
Published: October 2007

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
NMR of Carbohydrates, Lipids, and Membranes
Authors: Hounsell Elizabeth F.
Published: October 2007

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Resting Chest Pain, Negative Treadmill Exercise Electrocardiogram, and Reverse Redistribution in Dipyridamole Myocardial Perfusion Scintigraphy Might be the Features of Coronary Artery Spasm
Authors: Xiang Ding‐Cheng , Yin Ji‐Lin , He Jian‐Xin , Gong Zhi‐Hua
Published: October 2007

Background:

Coronary artery spasm usually attacks while at rest and the diagnosis depends on provoking tests which mostly are invasive, expensive and not practical. Previous investigations demonstrated that in most patients with coronary artery spasm, treadmill exercise electrocardiography (TEEC) did not induce any ischemic changes, and myocardial perfusion scintigraphy (MPS) showed reverse redistribution (RR).

Hypothesis:

Combination of resting chest pain, negative TEEC and RR might be a rational noninvasive set to predict coronary artery spasm.

Methods:

Patients with chest pain at rest, no significant coronary artery stenosis, and willing to undergo acetylcholine test were included. TEEC, dipyridamole and rest thallium‐201 MPS were performed before or after coronary angiography. The patients were divided into spasm and nonspasm groups by acetylcholine test. The clinical features and results of TEEC and MPS were compared between the spasm and nonspasm groups.

Results:

Acetylcholine test was performed in 92 patients and coronary artery spasm was successfully provoked in 68 patients. Positive TEEC was induced in only 4 patients in the spasm group. RR was present in totally 77 patients and 68 of them were from the spasm group. By a combination of resting chest pain, negative TEEC and RR to diagnose coronary artery spasm, the sensitivity and specificity were 94% and 96% respectively.

Conclusion:

Combination of resting chest pain, negative TEE and RR appears to be a rational noninvasive set to predict coronary artery spasm. Copyright © 2007 Wiley Periodicals, Inc.
Clinical Efficiency and Safety Analysis of Transcatheter Interventional Therapy for Compound Congenital Cardiovascular Abnormalities
Authors: Song Zhi‐Yuan , Shu Mao‐Qin , Hu Hou‐Yuan , Tong Shi‐Fei , Ran Bo‐Li , Liu Jian‐Pin , Li Yong‐Hua , He Guo‐Xiang
Published: October 2007

Objective:

To investigate the efficiency and safety of transcatheter interventional therapy for compound congenital cardiovascular abnormalities.

Methods:

From Nov 2001 to Jun 2006, a total of 36 patients (17 male, 19 female), aged 17.20 ± 10.52, with compound congenital cardiovascular abnormalities underwent transcatheter interventional procedure. These patients included 11 with perimembranous ventricular septal defect (PVSD) and patent ductus arteriosus (PDA), 8 patients with PVSD and atrial septal defect (ASD), 8 patients with ASD and PDA, 7 patients with ASD and pulmonary stenosis (PS), 1 patient with ASD and mitral stenosis(MS), 1 patient with coarctation of aorta (COA) and PDA. According to the principle of “easy first, hard second,” balloon valvuloplasties of PS or MS were performed before the closure of PVSD, and of PDA and ASD. Electrocardiogram and transthoracic echocardiogram were examined at 4 days, 1, 2, 6 and 12 months, respectively, after each procedure.

Results:

Transcatheter interventional therapy for compound congenital cardiovascular abnormalities was successful in all patients. Among these, 2 occluders were planted in each of 27 patients, 7 patients with ASD combined with PS and 1 patient with ASD combined with MS underwent successfully performed balloon valvuloplasty and ASD closure, 1 patient with COA combined with PDA underwent successfully performed balloon valvuloplasty and subsequent covered stent implantation. No patient encountered serious adverse events during the (30.5 ± 14.6) months of follow‐up.

Conclusions:

Transcatheter interventional therapy for compound congenital cardiovascular abnormalities could obtain satisfactory results with technical feasibility. Copyright © 2007 Wiley Periodicals, Inc.
Inhibition of Legionella pneumophila by Bacillus sp.
Authors: Temmerman R. , Vervaeren H. , Noseda B. , Boon N. , Verstraete W.
Published: October 2007

This study presents the potential of a biological control of Legionella pneumophila. It was verified to what extent the enrichment of various Bacillus species in water may decrease or prevent L. pneumophila from growing in water. During in vitro tests, B. subtilis BS104 was able to induce an average decrease in L. pneumophila numbers of 1.9 + 0.2 log units after 120 h. Furthermore, the spore and cell free filtrate of B. subtilis BS104 also decreased L. pneumophila by 2.6 + 0.4 log units after 120 h. An addition of Bacillus BS104 to a cooling tower test system with a water volume of 8 m3 resulted in a L. pneumophila level below 1000 CFU/L after 3 weeks, whereas the starting point was 5.3 × 104 CFU/L. Further experiments also indicated that B. subtilis BS104 might inhibit the internal replication of L. pneumophila in Acanthamoeba castellanii. This paper demonstrates that certain strains of Bacillus have the potential of reducing the number of viable L. pneumophila in water, or at least prevent its increase. These results are the first indication that a biological abatement of L. pneumophila could be possible.
Thymol derivatives from essential oil of Doronicum corsicum L.
Authors: Paolini Julien , Muselli Alain , Bernardini Antoine‐François , Bighelli Ange , Casanova Joseph , Costa Jean
Published: October 2007

The essential oil of Doronicum corsicum L. (Asteraceae), an endemic species from Corsica, has been studied by GC, GC–MS(EI and CI), 1H‐ and 13C‐NMR; 129 components were identified, representing 80.4% of the total amount. The essential oil was dominated by sesquiterpene hydrocarbons (38.2%) and oxygenated monoterpenes (36.7%). The major components were modhephene (11.6%), (E)‐β‐caryophyllene (9.8%), 10‐isobutyryloxy‐8,9‐epoxythymyl angelate (9.9%) and thymyl angelate (8.7%). The structures of the two thymol derivatives, the 13C‐NMR data of four other thymol derivatives and the chemical composition of the essential oil of D. corsicum were reported for the first time. Copyright © 2007 John Wiley & Sons, Ltd.
Two easy photochemical methods for the conversion of commercial ionone alpha into regioisomerically enriched γ‐ionone and γ‐dihydroionone
Authors: Serra Stefano , Fuganti Claudio , Brenna Elisabetta
Published: October 2007

Commercial ionone alpha was converted into regioisomerically enriched γ‐ionone and γ‐dihydroionone by mean of two synthetic routes, each involving a photochemical reaction as a key step. Using visible light, oxygen and methylene blue as photosensitizer, ionone alpha was transformed in 4‐hydroxy‐γ‐ionone isomers, which were deoxygenated to afford γ‐ionone by mean of triethylammonium formate in the presence of (Ph3P)2PdCl2 as catalyst. Irradiation of dihydro‐α‐ionol acetate, using high‐pressure mercury lamps and xylene as photosensitizer afforded γ‐dihydroionol acetate, which, after purification by crystallization of the corresponding p‐nitrobenzoyl ester, was converted to pure γ‐dihydroionone. Copyright © 2007 John Wiley & Sons, Ltd.
Mississippian Platform and Basin Successions from the Todrha Valley (northeastern Anti‐Atlas), southern Morocco
Authors: Graham John R. , Sevastopulo George D.
Published: October 2007

Carboniferous rocks of Mississippian age are exposed in Jebel Asdaf and Jebel Tisdafine, south and north respectively of the fault‐controlled Todrha Valley, between the towns of Tinerhir and Tinejdad in the Anti‐Atlas of southern Morocco. The age, as determined by microfossils, and facies of the dominantly siliciclastic successions of the two areas are different. The Jebel Asdaf Formation (245 m exposed; base and top not seen) is a shallow shelf sequence of late Tournaisian age. The Jebel Tisdafine Formation is a succession of turbidites (at least 1500 m thick), which rests unconformably on Devonian limestones and is of late Viséan age. Limestone beds in each formation have different origins. Skeletal grainstones and packstones in the Jebel Asdaf Formation formed when sand supply to the shelf was episodically reduced. Ooid‐rich skeletal packstones and grainstones in the Jebel Tisdafine Formation, characterized also by the presence of well‐rounded, coarse‐sand grade quartz grains, were derived from a contemporary carbonate platform. Individual beds in the Jebel Tisdafine Formation are essentially tabular and can be followed for long distances. Channelling is very rare. The turbidites, which are quartz‐rich, were transported from west to east across a basin floor with low slopes. Jebel Azguine, northwest of Tinejdad, is separated from Jebel Tisdafine by a major shear zone. It is made up of quartz sandstones that differ from those of both the Jebel Asdaf and Jebel Tisdafine formations in not containing any carbonate or body fossils, in its trace fossil assemblage dominated by vertical burrows, and in the presence of very thick beds. It is tentatively suggested that the Jebel Azguine sandstones are older than Carboniferous, to which they are assigned on some geological maps. The conclusions of this research are markedly different from accounts of the geology of the area published previously. Copyright © 2007 John Wiley & Sons, Ltd.