bluuebunny/crossref_metadata_2025 huggingface dataset:
Silent Sinus Syndrome: Lack of Orbital Findings in Early Presentation
Authors: Wise Sarah K. , Wojno Ted H. , DelGaudio John M.
Published: August 2007

Background

Silent sinus syndrome (SSS) is an uncommon disease process, classically described as unilateral maxillary sinus opacification that presents with enophthalmos and atelectasis of bony sinus walls from chronic negative pressure. Patients are largely free of characteristic rhinosinusitis symptoms.

Methods

Operative reports, clinic notes, and radiological studies were reviewed for cases of SSS treated in a tertiary care institution over a 7-year period. Presenting symptoms, radiological features, and surgical findings were evaluated.

Results

Seventeen cases of SSS were identified. Presentation ranged from incidental computed tomography (CT) scan findings to unilateral enophthalmos with altered midface anatomy. Facial pain ipsilateral to the disease process occurred in 30% of cases. Vision changes were uncommon. Radiological studies universally revealed an opacified maxillary sinus on the affected side. Maxillary sinus walls were contracted and demineralized with significant orbital floor depression in 11 advanced cases. Four early cases revealed only lateralized uncinate process on CT scan without increased orbital volume, and two moderate cases showed increased orbital volumes on CT scan without clinical enophthalmos. All patients had a significantly lateralized uncinate process at surgery, often closely apposed to demineralized orbital walls.

Conclusion

Some authors maintain that SSS presentation must include enophthalmos. However, our series shows cases of lateralized uncinate processes and increased orbital volumes on CT scan, as would be seen in classic SSS, but lacking clinical enophthalmos. Such cases should be considered as potentially representing early SSS, before the development of clinical orbital findings.
Fully Endoscopic Transsphenoidal Resection of Pituitary Tumors: Technique and Results
Authors: Uren Brent , Vrodos Nick , Wormald Peter-John
Published: August 2007

Background

The aim of this study was to describe our two-surgeon fully endoscopic approach to pituitary surgery and to report results in terms of tumor remission, improvement in vision, and complications. A retrospective chart review was performed.

Methods

Our prospectively recorded surgical database was searched for all endoscopic transsphenoidal procedures between January 2001 and December 2005. Those patients who had surgery had their medical charts reviewed and presenting symptoms and signs, lesion characteristics, endocrine investigations, operative details, complications, and treatment outcomes recorded.

Results

Thirty-two patients were included in the study. Twenty-three patients had macroadenomas, five patients had microadenomas, and four patients had other pathologies. Most patients with macroadenomas had significant supra- or parasellar extension. Of the 14 patients who had visual loss at presentation, 13 had postoperative improvement. Two patients had postoperative cerebrospinal fluid leaks, which were successfully treated endoscopically. Eight patients required some form of hormone replacement after surgery. After a mean follow-up of 31 months, the overall remission rate for patients with macroadenomas was 82% and for patients with microadenomas was 100%.

Conclusion

The fully endoscopic transsphenoidal approach provides excellent visualization for tumor resection and results in acceptable remission rates.
Media Training for Diabetes Prevention: A Participatory Evaluation
Authors: Lalonde Jeffrey , Jeambey Zeinab , Starkey Linda Jacobs
Published: August 2007

The Media and the Message – Promoting Healthy Eating and Active Living for Diabetes Prevention was a project aimed at raising awareness of diabetes risk factors and enhancing the public's access to credible, up-to-date, healthy eating and active living messages in the media. Cross-country workshops were held to teach media strategies and key diabetes prevention messages to multidisciplinary groups of health professionals. Evaluation was integral to the project; both the process and outcomes were assessed using Health Canada's Population Health Approach. Timeline and budget were tracked. Questionnaires were created to evaluate advisory committee conference calls and to determine participants’ perceptions of the 19 workshops and resources. A pre-workshop/post-workshop and three-month follow-up questionnaire format, along with an online media-tracking tool, was used to collect outcome data and to measure changes in confidence and media behaviour. Sixty-three percent of participants (150 of 238) reported that multidisciplinary workshops were very valuable. Three-month follow-up revealed a significant increase in confidence in all media activities taught at the workshops, although this failed to translate into increased media activity. Sixty-eight percent (78 of 115) of responding participants disseminated workshop learning. Detailed evaluation revealed that multidisciplinary workshops are valued and effective in increasing confidence. However, eliciting behaviour change following a workshop remains a challenge.
Zinc-Specific: Food Frequency Questionnaire
Authors: Lacey Janet M.
Published: August 2007

Purpose: A new dietary zinc assessment tool (ZAT) was evaluated to determine its usefulness in estimating zinc intakes among college students.

Methods: A food frequency questionnaire specifically designed for calculating average zinc intakes was administered to university students who had also completed three-day food records. Zinc intakes from the two instruments were compared.

Results: Among 171 participants (38 male, 133 female) aged 20.2 ± 1.6 years (mean ± standard deviation), the two dietary assessment methods were positively correlated (r=0.33, p<0.001). The ZAT correctly identified 76% of the women who were obtaining less than the National Academy of Sciences Recommended Dietary Allowance for zinc (8 mg/day for females, 11 mg/day for males).

Conclusions: This convenient tool may assist in the identification of problematic dietary patterns at an early stage. Further design modifications and expanded studies are warranted.
Correlation weighted successive projections algorithm as a novel method for variable selection in QSAR studies: investigation of anti‐HIV activity of HEPT derivatives
Authors: Kompany‐Zareh Mohsen , Akhlaghi Yousef
Published: August 2007

Correlation weighted successive projections algorithm (CWSPA), as a modified version of successive projections algorithm (SPA), is proposed for selection of descriptors in the non‐linear quantitative structure‐activity relationship (QSAR) study of a series of 1‐[2‐hydroxyethoxy‐methyl]‐6‐(phenylthio)thymine] (HEPT) derivatives, as non‐nucloside reverse transcriptase inhibitors (NNRTIs). In the proposed procedure the correlation coefficient of each descriptor with the activities (rg) was an additional criterion for selection of descriptors. The extent of contribution of r in the selection of variables, m, was also optimized and r‐CWSPA was the selected condition (m = 4). Three layer radial basis function networks (RBFNs) and molecular descriptors derived solely from molecular structure were used to construct the non‐linear QSAR models. Utilizing r‐CWSPA a limited number of uncorrelated and informative descriptors were selected. The relative standard error percent in anti‐HIV activity predictions for the training set by the application of cross‐validation (RSECV%) was 9.77%, and for prediction set (RSEP%) was 8.61% when the selected number of descriptors were 20. The obtained model outperforms those given in the literature in both the fitting and predicting stages. RBFN analysis yielded predicted activities in an acceptable agreement with the experimentally obtained values (cross‐validation r = 0.924, prediction r = 0.939). Compared to SPA, r‐CWSPA resulted in a lower RSECV% and RSEP% values using lower number of selected variables. The results show that considering the correlation of variables to the independent variables increase the performance of selection, as a result, the quality of the set of selected variables. Finally, a simple procedure for selection of variables using r‐CWSPA was proposed in which there was no need to test all possible initial descriptors. The results from the simple procedure were comparable to the procedure in which all of the possible initial descriptors were tested. The proposed method was successfully validated by five different training and test sets. Copyright © 2007 John Wiley & Sons, Ltd.
La2XB3 (X: Cl, Br): A Novel Layered Structure with Planar Boron Nets of B3, B6 and B8 Rings.
Authors: Zeng Hui‐Yi , Lukachuk Mar'yana , Okudera Hiroki , Zheng Chong , Mattausch Hansjuergen , Simon Arndt
Published: August 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.
[Be(OH2)4]Cl2 — Preparation, IR Spectrum, and Crystal Structure.
Authors: Massa Werner , Dehnicke Kurt
Published: August 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.
Rb{Pr6C2}I12, an Iodide with a 13‐Electron Isolated Octahedral {Pr6C2} Cluster.
Authors: Wiglusz Rafal , Pantenburg Ingo , Meyer Gerd
Published: August 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, Crystal Structure, and Properties of Vanadium(II) Tetrachloroaluminate.
Authors: Kessler Ulrich , Mueller Rainhard
Published: August 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.
Organocatalytic Asymmetric 1,6‐Additions of β‐Ketoesters and Glycine Imine.
Authors: Bernardi Luca , Lopez‐Cantarero Jesus , Niess Barbara , Joergensen Karl Anker
Published: August 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 Hydrogenation of Olefins with Axial Chiral Iridium QUINAP Complex.
Authors: Li Xinsheng , Kong Lichun , Gao Yongguang , Wang Xiaoxia
Published: August 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.
Task Specific Onium Salts (TSOSs) as Efficient Soluble Supports for Zard Radical Addition to Olefins.
Authors: Verron Julien , Joerger Jean‐Michel , Pucheault Mathieu , Vaultier Michel
Published: August 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.
Arene‐Catalyzed Lithiation of Phenyl‐ and 1,1‐Diphenylcyclopropane: Synthetic Applications.
Authors: Gomez Cecilia , Lillo Victor J. , Yus Miguel
Published: August 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.
Stereoselective Simmons—Smith Cyclopropanation of Chiral Enamides.
Authors: Song Zhenlei , Lu Ting , Hsung Richard P. , Al‐Rashid Ziyad F. , Ko Changhong , Tang Yu
Published: August 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 Recyclable Cu/Al‐HT Catalyst for Amination of Aryl Chlorides.
Authors: Likhar Pravin R. , Arundhathi R. , Kantam M. Lakshmi
Published: August 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 Vaulted Biaryl Phosphoric Acid‐Catalyzed Reduction of α‐Imino Esters: The Highly Enantioselective Preparation of α‐Amino Esters.
Authors: Li Guilong , Liang Yuxue , Antilla Jon C.
Published: August 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.
Chemoselective and Scalable Preparation of Alkyl Tosylates under Solvent‐Free Conditions.
Authors: Kazemi Foad , Massah Ahmad R. , Javaherian Mohammad
Published: August 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.
Regioselective Addition of 1,3‐Dicarbonyl Dianion to N‐Sulfonyl Aldimines: An Expedient Route to N‐Sulfonyl Piperidines and N‐Sulfonyl Azetidines.
Authors: Ghorai Manas K. , Kumar Amit , Halder Sandipan
Published: August 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 Novel Multicomponent Reaction of Arynes, β‐Keto Sulfones, and Michael‐Type Acceptors: A Direct Synthesis of Polysubstituted Naphthols and Naphthalenes.
Authors: Huang Xian , Xue Jian
Published: August 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.
Na2S2O4‐Initiated Free Radical Additions of Polyfluoroalkyl Halides to 4‐Pentenamides.
Authors: Yang Xianjin , Yuan Wenjiao , Gu Song , Yang Xueyan , Xiao Fanhua , Shen Quanshen , Wu Fanhong
Published: August 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 Course of Reduction of Substituted 5,6‐Dihydro‐4H‐1,2‐oxazines to Furan Derivatives.
Authors: Sukhorukov Alexey Yu. , Lesiv Alexei V. , Eliseev Oleg L. , Khomutova Yuliya A. , Bondarenko Tatyana N. , Lapidus Albert L. , Ioffe Sema L.
Published: August 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.
[4 + 1]/[2 + 1] Cycloaddition Reactions of Fischer Carbene Complexes with α,β‐Unsaturated Ketones and Aldehydes.
Authors: Barluenga Jose , Fanlo Hugo , Lopez Salome , Florez Josefa
Published: August 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.
Expeditious Access to Unprotected Racemic Pyroglutamic Acids.
Authors: Isaacson Jerry , Gilley Cynthia B. , Kobayashi Yoshihisa
Published: August 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 Piloty—Robinson Synthesis of 3,4‐Disubstituted Pyrroles.
Authors: Milgram Benjamin C. , Eskildsen Katrine , Richter Steven M. , Scheidt W. Robert , Scheidt Karl A.
Published: August 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.
Highly Efficient Au(I)‐Catalyzed Intramolecular Addition of β‐Ketoamide to Unactivated Alkenes.
Authors: Zhou Cong‐Ying , Che Chi‐Ming
Published: August 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.
Substrate‐Controlled and Site‐Selective [3 + 2] Cycloadditions of N‐Heterocyclic Carbene Derived Ambident Dipoles.
Authors: Cheng Ying , Liu Mei‐Fang , Fang De‐Cai , Lei Xue‐Mei
Published: August 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 4‐(5‐Aryl‐1,3,4‐oxadiazol‐2‐yl)phenyl‐hydrazine Derivatives from 3‐(4‐Hydrazinocarbonyl‐phenyl)sydnones.
Authors: Chang Hung‐Te , Chiang Kuo‐Chen , Wong Fung Fuh , Huang Chun‐Sheng , Liao Yang‐Ming , Kuo Wen‐Fa , Won Shaw‐Bing , Yeh Mou‐Yung
Published: August 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 3‐(6‐Aryl‐pyridin‐2‐yl)‐ and 8‐(6‐Aryl‐pyridin‐2‐yl) Coumarins
Authors: Brahmbhatt D. I. , Gajera J. M. , Pandya V. P. , Patel M. A.
Published: August 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.
Friedlaender Synthesis of Quinolines Using a Lewis Acid‐Surfactant‐Combined Catalyst in Water.
Authors: Zhang Liang , Wu Jie
Published: August 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 Study of Biological Activity of Some New 1,4‐Benzothiazines.
Authors: Deshmukh M. B. , Deshmukh S. A. , Jagtap S. S. , Mulik A. R.
Published: August 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 1‐Halo‐N,N‐bis(silyloxy)enamines
Authors: Kunetsky Roman A. , Dilman Alexander D. , Struchkova Marina I. , Belyakov Pavel A. , Korlyukov Alexander A. , Ioffe Sema L. , Tartakovsky Vladimir A.
Published: August 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 Characterization of 1,2‐Dihetarylethenes Containing Chlorobenzothiophene Moieties.
Authors: Krayushkin Mikhail M. , Migulin Vasily A. , Yarovenko Vladimir N. , Barachevskii Valerii A. , Vorontsova Ludmila G. , Starikova Zoya A. , Zavarzin Igor V. , Bulgakova Valeriya N.
Published: August 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 in vitro Activity Towards Mycobacterium tuberculosis of L‐Serinyl Ester and Amino Derivatives of Pyrazinoic Acid.
Authors: Pinheiro Alessandra C. , Kaiser Carlos R. , Lourenco Maria C. S. , de Souza Marcus V. N. , Wardell Solange M. S. V. , Wardell James L.
Published: August 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.
Peptaibols: Stable Markers of Fungal Development in the Marine Environment.
Authors: Poirier Laurence , Montagu Monique , Landreau Anne , Mohammed‐Benkada Mustapha , Grovel Olivier , Sallenave‐Namont Claire , Biard Jean‐Francois , Amiard‐Triquet Claude , Amiard Jean‐Claude , Pouchus Yves Francois
Published: August 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.
Total Syntheses in Solution of TOAC‐Labeled Alamethicin F50/5 analogues.
Authors: Peggion Cristina , Jost Micha , Baldini Chiara , Formaggio Fernando , Toniolo Claudio
Published: August 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.
Conformational Analysis of TOAC‐Labeled Alamethicin F50/5 Analogues.
Authors: Peggion Cristina , Jost Micha , De Borggraeve Wim M. , Crisma Marco , Formaggio Fernando , Toniolo Claudio
Published: August 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 Evaluation of Modified Oligodeoxynucleotides Containing Diphosphodiester Internucleotide Linkages.
Authors: Ahmadibeni Yousef , Parang Keykavous
Published: August 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 2,3‐Dimethyl Butenolide from the Brittle Star Ophiomastix mixta.
Authors: Lee Jinsoo , Wang Weihong , Hong Jongki , Lee Chong‐Ok , Shin Sook , Im Kwang Sik , Jung Jee Hyung
Published: August 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 New Flavanone Glycosides of Jasminum lanceolarium and Their Antioxidant Activities.
Authors: Sun Jia‐Ming , Yang Jun‐Shan , Zhang Hui
Published: August 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.
Convergent Synthesis of Potent COX‐2 Inhibitor Inotilone.
Authors: Shamshina Julia L. , Snowden Timothy S.
Published: August 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 Two Diastereomeric C1—C22 Fragments of Spirastrellolide A.
Authors: Paterson Ian , Anderson Edward A. , Dalby Stephen M. , Genovino Julien , Lim Jong Ho , Moessner Christian
Published: August 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.
Crystal Chemistry of Oxorhodates
Authors: Mueller‐Buschbaum Hanskarl
Published: August 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.
Ionic Ozonides
Authors: Jansen Martin , Nuss Hanne
Published: August 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.
Similarities Between Copper and Plutonium Containing “High Tc” Superconductors
Authors: Wachter P.
Published: August 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.
Dihydrogen Complexes as Prototypes for the Coordination Chemistry of Saturated Molecules
Authors: Kubas Gregory J.
Published: August 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.
Mild and Neutral Deprotections Catalyzed by Cerium(IV) Ammonium Nitrate
Authors: Maulide Nuno , Vanherck Jean‐Christophe , Gautier Arnaud , Marko Istvan E.
Published: August 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.
Green Analytical Methodologies
Authors: Keith Lawrence H. , Gron Liz U. , Young Jennifer L.
Published: August 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.
Stable Silyl, Germyl, and Stannyl Cations, Radicals, and Anions: Heavy Versions of Carbocations, Carbon Radicals, and Carbanions
Authors: Lee Vladimir Ya. , Sekiguchi Akira
Published: August 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.
Stable Five‐Membered Cyclic Alkynes
Authors: Suzuki Noriyuki
Published: August 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 Long Research Story Culminates in the First Total Synthesis of Moenomycin A
Authors: Welzel Peter
Published: August 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.
Recent Advances in Indium‐Promoted Organic Reactions
Authors: Auge Jacques , Lubin‐Germain Nadege , Uziel Jacques
Published: August 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.
Drug and Gene Delivery by “Bubble Liposomes” and Ultrasound
Authors: Maruyama Kazuo , Suzuki Ryo , Takizawa Tomoko , Utoguchi Noaki , Negishi Yoichi
Published: August 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.
From Glycerol to Value‐Added Products
Authors: Pagliaro Mario , Ciriminna Rosaria , Kimura Hiroshi , Rossi Michele , Della Pina Cristina
Published: August 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.
Ligand‐Induced Extramembrane Conformation Switch Controlling Alamethicin Assembly and the Cancer Current
Authors: Futaki Shiroh , Asami Koji
Published: August 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.
Radiolabelling Measurements of Radicals Derived from Terpenoid Volatile Organic Compounds (VOCS) Adsorbed in Porous Carbon
Authors: Rhodes Christopher J.
Published: August 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.
Long‐term retention of gadolinium in tissues from nephrogenic systemic fibrosis patient after multiple gadolinium‐enhanced MRI scans: case report and implications
Authors: Thakral Charu , Alhariri Jihad , Abraham Jerrold L.
Published: August 2007

Nephrogenic systemic fibrosis (NSF) is a painful and debilitating fibrosing disorder of the skin and systemic tissues. It is associated with exposure to Gd, used in MRIs and MRAs, in patients with renal insufficiency. We here present an illustrative example of a young patient who underwent multiple Gd‐enhanced scans, both before and after developing severe NSF. We examined biopsy tissues for quantification of detectable insoluble Gd deposits using automated scanning electron microscopy/energy dispersive X‐ray spectroscopy. High concentrations of Gd associated with calcium and phosphorus in skin persisted even 3 years after the last exposure to Gd. Such long‐term retention of Gd raises further concerns about the utility and safety of Gd‐based contrast agents. Residual Gd chelates, after initial and rapid renal clearance, can dissociate into insoluble, toxic Gd3+ that precipitates with tissue anions. Bone serves as a site for Gd storage. Subsequent clearance and mobilization from such stores may explain the variable latency of onset of NSF. We hypothesize that long‐term persistence and slow release of Gd3+ from bone stores can be a cause for concern of Gd‐associated toxicity with long latency. Copyright © 2007 John Wiley & Sons, Ltd.
Linking Productivity, Biodiversity and Habitat of Benthic Stream Macroinvertebrate Communities: Potential Complications of Worldwide and Regional Patterns
Authors: Statzner Bernhard , Lévêque Christian
Published: August 2007

To assess potential complications of links between productivity, biodiversity, and habitat, we assembled published worldwide data on benthic stream macroinvertebrate communities covering (1) annual production (P); (2) annual production/biomass‐rate (P/B); (3) number of taxa contributing to P (BD); (4) mean annual individual weight as a measure of organisms' size (S); and (5) mean annual discharge as a measure of habitat extent (Q), which enabled tests of the six hypothetical allometric relations

Pα BDx , Pα Sx , Pα Qx ,

and

P/Bα BD‐x , P/Bα S‐x , P/Bα Q‐x .

The worldwide data provided equivocal support for these hypothetical relations, because the world‐wide patterns were potentially obscured by various complications (e.g., continental BD‐gradients, organic pollution, alien species). However, testing the hypothetical relations using less complicated, regional data sets provided scarcely better support for them. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Electron Transport System (ETS) Activity in Alder Leaf Litter in Two Contrasting Headwater Streams
Authors: Fleituch Tadeusz , Leichtfried Maria
Published: August 2007

Decomposition rates, carbon and nitrogen concentrations and respiration electron transport (ETS) activity in alder leaf litter were examined by bag exposition method in two contrasting 2nd order streams. Oberer Seebach, Austria (alpine, limestone, karstic) and Goscibia, Poland (sub mountain, flysh) contrasted in catchment geology, channel hydrology, thermal regime and water chemistry. Despite differences in water temperature, the breakdown rates did not show statistical differences. However, the C:N ratio in alder leaf litter varied significantly between two sites. The potential ETS activity was significantly higher in the colder Goscibia and weakly related to stream thermal regimes. The effect of temperature on ETS of alder leaves was not the dominating factor. It was masked by variation of other factors like stream chemistry and the contribution of fine sediments, which are related to stream morphology and channel hydrology. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Circadian Changes in Feeding Activity and Diet of Hydropsyche saxonica (Trichoptera)
Authors: Tajmrová Lenka , Helešic Jan
Published: August 2007

Circadian changes in feeding activity and diet of instar IV and V larvae of Hydropsyche saxonica were studied in the Vrbovecký brook (Czech Republic). The larvae were hand‐picked at 6‐hour intervals. The ratio maximum foregut diameter/head capsule width was used to determine gut fullness and the contents of larval foreguts were analyzed using a millipore filter technique. One‐way ANOVA revealed significant differences in gut fullness among instar V larvae collected at different times. Guts were fuller in the larvae collected at dusk and at dawn, indicating high crepuscular activity. No significant temporal differences in gut fullness were recorded for instar IV larvae. There were no significant differences in foregut contents among instar V or among instar IV larvae collected at different times. However, the difference between foregut contents of instar V and IV larvae was significant. Amorphous detritus was the most important food source for instars IV, whereas instars V fed mainly on animal food and cellular detritus. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Phage phiC31 integrase‐mediated genomic integration and long‐term gene expression in the lung after nonviral gene delivery
Authors: Aneja Manish Kumar , Imker Rabea , Rudolph Carsten
Published: August 2007

Background

Phage ϕC31 integrase has emerged as a potent tool for achieving long‐term gene expression in different tissues. The present study investigated the activity of ϕC31 integrase in murine lungs.

Methods

Transfections in murine alveolar epithelial (MLE12) cells were performed with Lipofectamine 2000. For in vivo gene delivery, DNA was complexed with polyethylenimine (PEI) and PEI‐DNA complexes were injected intravenously into mice. Expression of luciferase in mice was monitored by in vivo bioluminsecence imaging. Genomic integration and integration into a previously described ‘hotspot’ were confirmed by polymerase chain reaction (PCR).

Results

ϕC31 integrase mediated intramolecular recombination between wild‐type attB and attP sites in MLE12 cells. Long‐term gene expression could be observed in MLE12 cells in the presence of integrase without any selection pressure. Long‐term expression of luciferase after intravenous injection of PEI‐DNA complexes could be observed only in the lungs of mice which were co‐injected with the integrase‐encoding plasmid. Increased amounts of integrase plasmid and administration of a second dose had no effect on the level of luciferase expression achieved with a single dose, which was three orders of magnitude lower than the values observed on ‘day 1’ post application. Genomic integration of the transgene in the mouse lungs was confirmed by PCR. Seven out of the fifteen treated mice showed integration at the mpsL1 site, a previously described ‘hot spot’ from liver.

Conclusions

These results provide evidence for the activity of ϕC31 integrase in lungs but also emphasize the need for optimization of the system to maintain long‐term gene expression at high levels. Copyright © 2007 John Wiley & Sons, Ltd.
New Brillouin fiber laser configuration with high output power
Authors: Shirazi M. R. , Harun S. W. , Thambiratnam K. , Biglary M. , Ahmad H.
Published: August 2007

A new Brillouin fiber laser (BFL) configuration is demonstrated using similar components as a conventional BFL. The BFL is configured so that the single‐mode fiber receives more Brillouin pump (BP) power to generate higher back‐propagating Stokes power and Brillouin gain in the cavity. The proposed configuration shows an output peak power of −0.5 dBm, which is 5.7 dB higher when compared with the conventional configuration. However, the maximum output power was observed at 0.5 dBm with an output coupler of 20 to 80 ratio, whereby 20% of the light is allowed to oscillate in the cavity and 80% of the light is coupled out as output. The linewidth of the BFL (whose BP linewidth is about 200 MHz) is measured to be ∼30 kHz, using a heterodyne beat technique. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 2656–2658, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22805
CAD formula for inductance calculation of double‐level square spiral inductors
Authors: Tang Wanchun , Cui Qi , Zhou Puke , Zhang Jie
Published: August 2007

This article derives simple CAD inductance formula of double‐level spiral inductors by analytical moment method, synthetic asymptote, and the duality of inductance and capacitance LC = μ0ε0 of the transmission line theory. The main contribution of this article is the mutual inductance calculation of the upper and lower spirals. Compared with IE3D, commercial software by Zeland, the average error of inductance is generally less than 2% with maximum error of 5%. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 2648–2651, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22807
Negative‐ and positive‐phase‐velocity propagation in an isotropic chiral medium moving at constant velocity
Authors: Mackay Tom G. , Lakhtakia Akhlesh
Published: August 2007

Analysis of electromagnetic planewave propagation in a medium which is a spatiotemporally homogeneous, temporally nonlocal, isotropic, chiral medium in a comoving frame of reference shows that the medium is both spatially and temporally nonlocal with respect to all non‐co‐moving inertial frames of reference. Using the Lorentz transformations of electric and magnetic fields, we show that plane waves which have positive phase velocity in the comoving frame of reference can have negative phase velocity in certain non‐co‐moving frames of reference. Similarly, plane waves which have negative phase velocity in the comoving frame can have positive phase velocity in certain non‐co‐moving frames. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 2640–2643, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22810
A high‐performance miniaturized 3 15.5‐GHZ 13‐DB CMOS distributed amplifier
Authors: Chang Jin‐Fa , Lin Yo‐Sheng , Chen Chi‐Chen
Published: August 2007

In this article, we demonstrate a high‐performance 3–15.5‐GHz distributed amplifier (DA) for ultra‐wideband (UWB) system applications implemented with a standard 0.18‐μm CMOS technology. To achieve high gain, wide bandwidth, and small chip‐area at the same time, miniaturized inductors with high quality‐factor and small parasitic capacitance were adopted, the bias of the field‐effect transistors (FETs) was optimized, and cascode FETs were used to replace the traditional common‐source FETs. In addition, to improve the stability of the DA, a damping resistor RGwas added to the gate of the common‐gate FETs. Over the 3–15.5‐GHz frequency band, this LNA achieved good forward gain (S21) of 10–13 dB, input return loss (S11) of −11.5 to −31.4 dB, reverse isolation (S12) of −21.6 to −37.1 dB, and noise figure (NF) of 5 to 7.2 dB. Moreover, the DA exhibited good input 1‐dB compression point (P1dB) of −1.5 dBm and input third‐order inter‐modulation point (IIP3) of 12.5 dBm at 6 GHz. The chip area was only 1050.9 μm × 539.8 μm (i.e. 0.567 mm2) excluding the test pads. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 2742–2747, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22820
Double‐printed circular disc antenna having a frequency band notch function
Authors: Jie Sheng , Yang Xue‐Xia , Sun Jiang‐Tao , Lu Yi‐Min
Published: August 2007

In this paper, a novel UWB (ultra‐wide bandwidth) antenna having a frequency band notch is presented. The ring‐slot is used to change the current distribution and realize the frequency notch function. The measured return loss less than −10.0 dB is from 3.1 to 5.0 GHz and from 6.0 to 10.6 GHz, and the frequency notch band is from 5.15 to 5.825 GHz. The simulated gain changes between 2.0 and 6.5 dB within the pass band and varies between −1.5 and 1.0 dB within the band‐notched part. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 2675–2677, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22824
Compact sharp cutoff wide stopband microstrip low‐pass filter using complementary split ring resonator
Authors: Dwari Santanu , Sanyal Subrata
Published: August 2007

A novel compact microstrip low‐pass filter (LPF) is proposed using open circuit stubs and square patches alongwith complementary split ring resonator (CSRR). It exhibits wide stopband and sharp rejection. A demonstration LPF, having 3‐dB cutoff frequency of 1.45 GHz, was fabricated and measured. Measured passband to stopband attenuation slope is more than 355 dB/GHz. Measured rejection greater than 20 dB extends over more than 13.75 times of the 3‐dB cutoff frequency. Electrical length of the filter is less than 12% of the guided wavelength at 3‐dB cutoff frequency. Experimental and simulated results agree well. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 2865–2867, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22825
Realization of complete polarization conversion using periodic structure composed of left‐handed materials
Authors: Fang Weihai , Xu Shanjia
Published: August 2007

The polarization conversion characteristics of dielectric periodic structure composed of left‐handed materials for the case of plane wave oblique incidence are carefully investigated by a method which combines the multimode network theory with the rigorous mode matching method. It is indicated that complete polarization conversion between TE and TM modes can be realized using left‐handed gratings. This can hardly achieve in the conventional right‐handed gratings. This unique merit of left‐handed periodic structure is an important significance for accurate design of new millimeter wave polarization converters. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 2862–2864, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22826
Stacked dual layer complementing Sierpinski gasket planar antenna
Authors: Ghatak Rowdra , Mishra Rabindra K. , Poddar Dipak R.
Published: August 2007

A stacked configuration of Sierpinski microstrip antenna, with the patches on each layer complementing each other, shows prominent reflection coefficient (Γ) in lower and upper frequency bands; and better performance with respect to impedance bandwidth and gain. This article reports and compares the simulation and experiment results to validate the above claims. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 2831–2833, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22827
A novel method to determine general Chebyshev filters transmission zeroes
Authors: Chu Qing‐Xin , Tu Zhi‐Hong
Published: August 2007

Determination of cross‐coupled filters order and transmission zeroes is the foundation of advanced filters designs. This article presents a novel and effective method to determine them in terms of general Chebyshev filters extreme characteristics and given specifications. All of combinations of them can be obtained and positions of transmission zeroes can be optional. It makes up the casualness of selecting them and is more convenient for practical filters designs. Three application examples illustrate the procedure and the validity of this method. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 2849–2853, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22832
A stable solution of time domain electric field integral equation using weighted Laguerre polynomials
Authors: Chung Young‐Seek , Lee Yoonju , So Joonho , Kim Joonyeon , Cheon Chang‐Yul , Lee Byungje , Sarkar Tapan K.
Published: August 2007

In this article, we propose a new stable solution for the time domain electric field integral equation (TD‐EFIE) for arbitrarily shaped conducting structures, which utilizes weighted Laguerre polynomials as temporal basis functions, which means that the unknown surface currents are expanded by these basis functions. The proposed algorithm is based on the Galerkin's scheme that involves separate spatial and temporal testing procedures. By introducing the temporal testing procedure, the conventional marching‐on in time procedure can be replaced by a recursive relation between the different orders of the weighted Laguerre polynomials. In this article, by deriving the integral formulation using the weighted Laguerre polynomials, we solve for the surface current density as the unknown directly. To verify the accuracy of the proposed method, we have compared the results with the inverse discrete Fourier transform of the frequency domain solutions for the electric field integral equation. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 2789–2793, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22835
Determination of resonance frequency of hexagonal and half hexagonal microstrip antennas
Authors: Ray K. P. , Pandey M. D. , Krishnan S.
Published: August 2007

Formulations to determine the resonance frequencies of hexagonal and half hexagonal microstrip antennas have been proposed based on their equivalence with circular and semicircular microstrip antennas, respectively. The new configuration of half hexagonal patch formed by bisecting the full hexagon along its resonant length, has the same resonance frequency as that of the full hexagonal patch, with half the size. Simulations and experiments have been performed to validate the proposed method. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 2876–2879, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22843
High isolation 2.4/2.6 GHz dual‐band full‐duplex patch antenna transceiver for WLAN
Authors: Kaya Adnan
Published: August 2007

This paper presents results for a novel active transmit‐receive antenna and designing a high port isolation dual frequency orthogonally polarized inset rectangular patch antenna. Measurements show an improvement of 20 dB in port isolation relative to the conventional antenna, operating at 2.4 and 2.6 GHz. An inset microstrip patch antenna operating at 10.5 GHz having 12.22% bandwidth has been used as a reference antenna. It is also shown that the return loss level of the antenna has been enhanced by using active matching with RC mutator networks from −10.62 dB to −14.76 dB respectively. In addition, this paper presents the design of an integrated 2.4/2.6 GHz full duplex dual‐band antenna transceiver for WLAN 802.11 a/b/g applications. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 2843–2848, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22845
Circularly polarized microstrip antenna with harmonics suppression
Authors: Sun Jiangtao , Yang Xuexia , Sheng Jie
Published: August 2007

The design of circularly polarized (CP) microstrip antenna with harmonics suppression is first proposed. The tapered defected ground structure (TDGS) has been utilized to obtain bandstop characteristics. The measured return losses at the second and third harmonic frequencies are −1.2 and −2.7 dB, respectively. The measured CP axial ratio is 0.8 in the broadside direction at 5.53 GHz. The details of the simulated and experimental results for the proposed design are presented and discussed. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 2841–2843, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22846
Coupled‐mode theory for spun four‐lobe stress region fibers
Authors: Qian Jingren , Wang Xuxu
Published: August 2007

Based on coupled‐mode theory for LP modes, spun four‐lobe stress region fibers are theoretically analyzed. It is indicated for the first time that there are not any birefringence in spun four‐lobe stress region fibers if four lobes are symmetrically placed around the fiber axis. The same result is valid for spun fibers with eight‐lobe and 16‐lobe stress region, both having zero birefringence. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 2814–2817, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22847