bluuebunny/crossref_metadata_2025_split huggingface dataset:
Oral Aspects of Gaucher's Disease: A Literature Review and Case Report
Authors: Horwitz Jacob , Hirsh Ilan , Machtei Eli E. 
Published: April 2007

Background: Gaucher's disease (GD) is a lysosomal storage disease with a high incidence in Ashkenazi Jews. The disease is caused by an autosomally recessive inherited deficiency of the lysosomal enzyme glucocerebrosidase, leading to the accumulation of glucocerebroside in macrophages. The lipid‐laden macrophages, called Gaucher cells, can be detected in liver, spleen, and bone marrow tissues.Methods: A case report of periodontal treatment of a 47‐year‐old female patient with GD with recurrent gingival hemorrhage and toothache is presented. Periapical radiographs revealed cyst‐like lesions in the mandibular premolar‐molar regions accompanied by severe apical root resorption, enlargement of the periodontal ligament and bone‐marrow spaces, and loss of trabecular structure and radiopaque appearance of bone. An abnormally narrow and sharp coronoid process and effacement of the cortical borders of the mandibular canal were noted.Results: The patient was diagnosed as having generalized severe chronic periodontitis. Treatment included oral hygiene motivation and instructions, scaling, root planing, and access flap therapy, resulting in resolution of periodontal signs and symptoms and a marked improvement in the patient's feeling of well being.Conclusions: Periodontal treatment can be effective in patients with GD. Oral findings may lead to early detection of GD, especially in the absence of clinical symptoms. Dentists should be aware of possible oral and radiographic manifestations of the disease and the role of periodontal treatment in improving patient's oral health and quality of life.
Evidence of Periopathogenic Microorganisms in Placentas of Women With Preeclampsia
Authors: Barak Shlomi , Oettinger‐Barak Orit , Machtei Eli E. , Sprecher Hannah , Ohel Gonen 
Published: April 2007

Background: Periodontal disease is a chronic inflammatory infectious disease that may act as a focus of infection. Preeclampsia is a pregnancy‐specific hypertensive disorder that often leads to maternal morbidity and mortality. Acute atherosis, the placental lesion of preeclampsia, shares many histopathological features with atherosclerosis. Recently, chronic infection was linked to the initiation of atherosclerosis. Oral pathogens have been detected in atherosclerotic plaques, where they may play a role in the development and progression of atherosclerosis. The purpose of the present study was to explore the possibility that periopathogenic bacteria may translocate into the placental tissues of women with preeclampsia.Methods: Samples were taken from 16 placentas obtained from cesarean sections of women with preeclampsia and from 14 age‐matched healthy pregnant women. Polymerase chain reaction was used to detect Actinobacillus actinomycetemcomitans, Fusobacterium nucleatum ssp., Porphyromonas gingivalis, Prevotella intermedia, Tannerella forsythensis, and Treponema denticola.Results: Eight of the 16 (50%) placenta specimens were positive for one or more periopathogenic bacteria in the preeclampsia group, compared to only two of the 14 samples (14.3%) from controls. Bacterial counts were statistically significantly higher in the preeclampsia group for all of the periopathogenic bacteria examined (P ≤0.0055). Although all of the target periopathogenic bacteria were found in the preeclampsia group, only three (P. gingivalis, T. forsythensis, and T. denticola) were found in the control group.Conclusion: The significant presence of periopathogenic microorganisms or their products in human placentas of women with preeclampsia may suggest a possible contribution of periopathogenic bacteria to the pathogenesis of this syndrome.
Thixoforming of Steels – A Status Report
Authors: Püttgen W. , Bleck W. , Hirt G. , Shimahara H. 
Published: April 2007

AbstractThe thixoforming of metals is a new forming technology, which combines the advantages of casting and forging and focuses on the production of structural components with complex shapes. Various components made of aluminium and magnesium are already industrially produced. Apart from this, using steels in the thixoforming processes is still a matter of research. This paper summarises the state of the art of steel thixoforming. Besides relevant material and process parameters, different process routes, numerical modelling techniques, and tool requirements are discussed. In addition, thixoformed prototypes of different steel grades are presented and evaluated with defect index cards, which characterise occurring defects and give suggestions how to avoid them. The design of suitable tool materials and tool concepts, the development of heating strategies which provide a homogeneous temperature distribution, and the development of thixoformable steels are main topics of current research. This paper focuses on the technology of steel thixoforming with regard to the material requirements, the production processes, and the accompanying current technical problems.
ESR Refining Potential for Titanium Alloys using a CaF2‐based Active Slag
Authors: Stoephasius J.‐C. , Reitz J. , Friedrich B. 
Published: April 2007

AbstractSince the end of the Cold War and due to the needs to produce titanium more cost‐efficient and thus more attractive for its civilian use, the electroslag remelting (ESR) process has become an increasingly important topic of international research programmes, because titanium and titanium aluminides can be chemically refined by ESR in some degree. Using ESR, titanium turnings from machining steps and scrap from foundries can be remelted, refined and provided as secondary titanium for the market at relatively favourable prices. This article investigates the removability of the main impurities out of titanium and titanium‐aluminium alloys by electroslag remelting using the active slag system CaF2‐Ca‐(CaO). Thermochemical and kinetic aspects of the ESR process are considered.
ADI Lost‐Foam: Synergy of Process and Material
Authors: dos Santos D. , Vroomen U. , Bührig‐Polaczek A. 
Published: April 2007

AbstractA consortium of SME and RTD partners from Germany, Poland, Italy and Finland was established in the ambit of the fifth European framework programme for the development of a process that combined Lost‐Foam with a high performance ADI – Austempered Ductile Iron Cast Iron.In the Lost‐Foam process foam patterns are used as models for complex and near net shape castings. These models are coated with a special refractory paint. The models are surrounded by unbonded sand and then filled with liquid metal. As the alloyed ductile iron melt decomposes the foam, the coating material is of great importance for the effective extraction of the foam decomposition products. By means of a posterior special heat treatment it is possible to achieve tensile strengths ranging from 800 to 1600 MPa with elongations ranging from 1 % to 12 %. The main achievements of the performed investigations were the development of the alloy and respective heat treatment parameters for the base ductile iron as well as a suitable coating material. Moreover, these investigations showed that it is possible to produce ADI castings capable of achieving the same mechanical properties as forged steel crankshafts with a significant weight reduction. Additionally, the production of such castings through the Lost‐Foam process have a yield of more than 87 % as opposed to the typical yield of the traditional green sand process which can reach 55 %.
Synthesis, Characterization and Structure Effects on Extractability and Selectivity of N,N'‐Bis(Salicylaldehydene) ‐ 1,4‐Bis‐(m‐Aminophenoxy)Butane towards some Divalent Cations
Authors: Ziyadanoğullari Berrin , Ceviziçi Deniz , Temel Hamdi , Guzel Remziye 
Published: April 2007

AbstractThe extraction of copper(II), nickel(II) and cobalt(II) from the aqueous phase with N,N'‐bis(salicylaldehydene)‐1,4‐bis‐(m‐aminophenoxy)butane (MAS), which was synthesized from 1,4‐bis(m‐aminophenoxy)butane and salicylaldehyde, was studied. Microanalytical data, elemental analysis, UV‐visible 1H and 13C n.m.r. spectra and IR‐spectra were used to confirm the structures. The extractability and selectivity of divalent cations were evaluated as a function of relationship between distribution ratio of the metal and pH or ligand concentration. Cu+2 showed the highest extractability and selectivity at pH 6.0, whereas Ni+2 and Co+2 showed at pH 9.2. The stoichiometries of the compounds formed were estimated to be CuL, CoL, NiL, where L is N,N'‐bis(salicylaldehydene)‐1,4‐bis‐(m‐aminophenoxy)butane. It was concluded that MAS can effectively be used in solvent extraction of copper(II), nickel(II) and cobalt(II) from the aqeous phase to the organic phase.
Efficient High‐Performance Liquid Chromatography with Liquid‐Liquid Partition Cleanup Method for the Determination of Pymetrozine in Tobacco
Authors: Zhang Xian , Cheng Xinsheng , Wang Chuanqin , Xi Zheng , Li Qiuhua 
Published: April 2007

AbstractFor the first time, a novel, simple and reliable method for analysis of pymetrozine residues in flue‐cured tobacco leaves has been developed utilizing HPLC‐UV with liquid‐liquid partition cleanup. Pre‐treatment with ultrasonic extraction and liquid‐liquid partition procedures gave preferable baseline separation and clean chromatograms by removing water‐soluble and fat‐soluble components which interfere with pymetrozine in the test. The performance of the method was evaluated and validated: the detection limit (LOD) was 0.005μg.mL‐1, the relative standard deviation (RSD) was 1.2 % (n=5), and the overall recovery was above 90 % at fortification levels of 0.200, 0.500, 1.000, and 5.000 mg.kg‐1. The proposed method was successfully employed for the determination of pymetrozine residues in twelve flue‐cured tobacco samples collected from different regions of China.
Simultaneous Preconcentration of Copper, Nickel, Cobalt and Lead Ions Prior to Their Flame Atomic Absorption Spectrometric Determination
Authors: Ghaedi Mehrorang , Ahmadi Farshid , Soylak Mustafa 
Published: April 2007

AbstractA sensitive and simple method for the simultaneous preconcentration of nutritionally important minerals in real samples has been reported. The method is based on the adsorption of Cu2+, Ni2+, Co2+ and Pb2+ on 4‐propyl‐2‐thiouracil (PUT) loaded on activated carbon. The metals on the complexes are eluted using 5 mL 3 M HNO3 in acetone. The influences of the analytical parameters including pH and sample volume were investigated. The effects of matrix ions on the retentions of the analytes were also examined. The recoveries of analytes were generally higher than 95 %. The detection limits for Cu2+, Ni2+, Co2+ and Pb2+ were 1.6, 1.3, 1.2, 2.3 ng ml‐1, respectively. The method has been successfully applied for these metals content evaluation in some real samples including natural water samples.
A cross‐setting study of chimpanzee (Pan troglodytes) personality structure and development: zoological parks and Yerkes National Primate Research Center
Authors: Weiss Alexander , King James E. , Hopkins William D. 
Published: March 2007

AbstractThis study addressed whether personality ratings using a 43 adjective questionnaire based on the Five‐Factor Model generalized from a sample of 202 zoo‐housed chimpanzees to a sample of 175 chimpanzees housed in Yerkes National Primate Research Center. Mean interrater reliabilities of adjectival ratings were lower for the chimpanzees housed in Yerkes. In addition, rank order of the interrater reliabilities of items differed between settings. To compare factor structure, we first examined whether we could replicate the original six factor structure found in an earlier study of 100 zoo chimpanzees using principal factors analysis in the Yerkes sample and 102 new zoo chimpanzees. The dominance, extraversion, conscientiousness, and agreeableness factors were clearly replicated in the Yerkes sample and the 102 new zoo chimpanzees. The Neuroticism and Openness factors did not replicate in the Yerkes sample, but they also did not replicate in the new zoo chimpanzees. These findings suggest the need to sample more adjectives representing neuroticism and openness in future versions of the questionnaire. We next sought to determine whether factor structure, as determined by principal components analysis, remained invariant across the two settings. This analysis revealed dominance, extraversion, conscientiousness, and agreeableness factors in both settings and a high level of congruence between the zoo and Yerkes samples for these factors. Finally, we tested whether factor scores in the two samples were similarly related to age and sex. With the exception of differences in age effects for dominance and agreeableness, age, and sex effects were consistent across samples. These findings suggest that, whereas there may be differences in the ease with which ratings are made, personality structure, and development are largely consistent across widely differing settings. Am. J. Primatol. 69:1264–1277, 2007. © 2007 Wiley‐Liss, Inc.
Synthesis and electrochemical sensing behaviour of a new ferrocene functionalized tet ‘a’ macrocyclic receptor towards transition metal ions
Authors: Krishnapriya K. R. , Sampath N. , Ponnuswamy M. N. , Kandaswamy M. 
Published: April 2007

AbstractA new ferrocene functionalized macrocyclic receptor 1,8‐bis(ferrocenylmethyl)‐5,5,7,12,12,14‐hexamethyl‐1,4,8,11‐tetraazacyclotetradecane (R) has been designed and synthesized to study its potential application as chemosensor. The receptor has been characterized by spectral techniques and X‐ray diffraction. The compound crystallizes in the orthorhombic space group Pcab with four molecules in a unit cell (half‐a‐molecule in the asymmetric unit). The electrochemical studies of the receptor in dioxane–water (7:3 v/v, 25 °C) indicate that the receptor is pH‐dependent with a displacement of E1/2 to more anodic potentials with a decrease in the pH from 12 to 5. The electrochemical behaviour of R was also studied in the presence of Mn2+, Co2+, Ni2+, Cu2+ and Zn2+ in dioxane–water (7:3 v/v, 25 °C, [Bun4N][ClO4]), showing that upon complexation the ferrocene–ferrocenium half‐wave potential shifts anodically in relation to that of the free receptor. The maximum electrochemical shift (ΔE1/2) of 46 mV was found in the presence of Cu2+, followed by Co2+ (20 mV), Mn2+ (15 mV), Ni2+ (13 mV) and Zn2+ (9 mV). Moreover, the receptor R is able to electrochemically and selectively sense Cu2+ in the presence of the other transition metal cations studied. Copyright © 2007 John Wiley & Sons, Ltd.
Infrared spectroscopic monitoring of urea addition to oriented strandboard resins
Authors: So Chi‐Leung , Eberhardt Thomas L. , Hsu Ernest , Via Brian K. , Hse Chung Y. 
Published: April 2007

AbstractOne of the variables in phenol formaldehyde adhesive resin formulation is the addition of urea, which allows the resin manufacturer to manipulate both product functionality and cost. Nitrogen content can be used as a measure of the level of urea addition because most of the nitrogen present is derived from urea added at the end of the preparation process. Nitrogen analyses of a set of commercial oriented strandboard resins were first determined by combustion analysis. IR spectroscopic data were then collected and used along with the values for nitrogen content to generate predictive models. First, principal component analysis demonstrated the ability to separate resin mixtures from low to high nitrogen content. Partial least squares regression was then performed and gave excellent correlations between the measured and predicted nitrogen contents for a set of unrelated (test) resins and a set of mixtures prepared through combinations of resins with known nitrogen contents. Similar results were obtained on both a wet and dry mass basis. Given the flexibility of this instrumentation, such analyses could be placed in‐line for real time monitoring of resin applied during panel manufacturing. © 2007 Wiley Periodicals, Inc. JAppl Polym Sci 2007
Birefringent characterization of necking phenomenon along cold‐drawn polypropylene fibers. I. Offline drawing
Authors: El‐Dessouky Hassan M. 
Published: April 2007

AbstractAn automated two‐beam interference Pluta microscope was used to measure the optical anisotropy or birefringence of polymer fibers. A sample of polypropylene (PP) fibers was used and cold‐drawn to low draw ratios. The neck shoulder “necking” was micro‐detected at draw ratio 1.3 and characterized using the measured thickness and birefringence along the drawn PP fiber. Birefringence profiles at different regions along deformed PP fiber were determined to confirm the effect of necking on these fibers. The influence of this phenomenon on the molecular orientation function of PP fibers was presented. The strong dependence of the birefringence on the thickness was formulated analytically at the necked zone of the drawn PP fiber. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci 2007
Overcoming the winner's curse: an adaptive learning perspective
Authors: Bereby‐Meyer Yoella , Grosskopf Brit 
Published: April 2007

AbstractThe winner's curse phenomenon refers to the fact that the winner in a common value auction, in order to actually win the auction, is likely to have overestimated the item's value and consequently is likely to gain less than expected and may even lose (i.e., it is said to be “cursed”). Past research, using the “Acquiring a company” task has shown that people do not overcome this bias even after they receive extensive feedback. We suggest that the persistence of the winner's curse is due to a combination of two factors: variability in the environment that leads to ambiguous feedback (i.e., choices and outcomes are only partially correlated) and the tendency of decision makers to learn adaptively. We show in an experiment that by reducing the variance in the feedback, performance can be significantly improved. Copyright © 2007 John Wiley & Sons, Ltd.
Ca1.5Eu3Sn0.5O7: A Calcium Europium Tin Oxide with a Novel Structure.
Authors: Kaminaga Yusuke , Yamada Takahiro , Yamane Hisanori 
Published: April 2007

AbstractChemInform 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, Magnetic Properties and 151Eu, 119Sn Moessbauer Spectroscopy of Eu5Sn3S12 and Eu4LuSn3S12.
Authors: Jakubcova Petra , Johrendt Dirk , Sebastian C. Peter , Rayaprol Sudhindra , Poettgen Rainer 
Published: April 2007

AbstractChemInform 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.
Supported Pt—Co Catalysts for Selective CO Oxidation in a Hydrogen‐Rich Stream.
Authors: Ko Eun‐Yong , Park Eun Duck , Lee Hyun Chul , Lee Doohwan , Kim Soonho 
Published: April 2007

AbstractChemInform 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.
GaCl3‐Catalyzed Chloroacylation of Alkynes: A Simple, Convenient and Efficient Method to β‐Chlorovinyl Ketones.
Authors: Zhou Hongwei , Zeng Changying , Ren Lianjun , Liao Wenhui , Huang Xian 
Published: April 2007

AbstractChemInform 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.
Oxidation of 4‐Arylphenol Trimethylsilyl Ethers to p‐Arylquinols Using Hypervalent Iodine(III) Reagents.
Authors: Felpin Francois‐Xavier 
Published: April 2007

AbstractChemInform 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.
Oxovanadium(V)‐Catalyzed Oxidative Biaryl Synthesis from Organoborate under O2.
Authors: Mizuno Hidenori , Sakurai Hidehiro , Amaya Toru , Hirao Toshikazu 
Published: April 2007

AbstractChemInform 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.
Nickel(II) Complexes of Bidentate N‐Heterocyclic Carbene/Phosphine Ligands: Efficient Catalysts for Suzuki Coupling of Aryl Chlorides.
Authors: Lee Chun‐Chin , Ke Wei‐Chi , Chan Kai‐Ting , Lai Chun‐Liang , Hu Ching‐Han , Lee Hon Man 
Published: April 2007

AbstractChemInform 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 One‐Pot Asymmetric Synthesis of Functionalized Tricyclic Carbon Frameworks from a Triple‐Cascade/Diels—Alder Sequence.
Authors: Enders Dieter , Huettl Matthias R. M. , Runsink Jan , Raabe Gerhard , Wendt Bianca 
Published: April 2007

AbstractChemInform 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.
Preparation of Enantiopure 2‐Acylazetidine and Their Reactions with Chloroformates.
Authors: Ma Sang‐ho , Yoon Doo Ha , Ha Hyun‐Joon , Lee Won Koo 
Published: April 2007

AbstractChemInform 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 γ‐Aryl‐γ‐butyrolactones by Sequential Asymmetric Epoxidation, Ring Expansion, and Baeyer—Villiger Oxidation.
Authors: Wang Bin , Shen Yu‐Mei , Shi Yian 
Published: April 2007

AbstractChemInform 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.
Electrophilic Cyclization of N‐Alkenylamides Using a Chloramine‐T/I2 System.
Authors: Morino Yoshinobu , Hidaka Ikumasa , Oderaotoshi Yoji , Komatsu Mitsuo , Minakata Satoshi 
Published: April 2007

AbstractChemInform 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 (E/Z) Determination of Substituted 2‐Phenylimidazoles.
Authors: Szotkowski Tomas , Bures Filip , Pytela Oldrich , Kulhanek Jiri , Travnicek Zdenek 
Published: April 2007

AbstractChemInform 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.
Facile Three‐Component Synthesis of Substituted Quinolines Catalyzed by Iridium(III) Complex.
Authors: Nakajima Takayuki , Inada Takashi , Igarashi Takeyuki , Sekioka Tadashi , Shimizu Isao 
Published: April 2007

AbstractChemInform 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 2,6‐Diamino‐5‐[(2‐substituted phenylamino)ethyl]pyrimidin‐4(3H)‐one as Inhibitors of Folate Metabolizing Enzymes.
Authors: Gangjee Aleem , Wang Ying , Queener Sherry F. , Kisliuk Roy L. 
Published: April 2007

AbstractChemInform 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.
Three‐Component Synthesis of 4‐Aryl‐5‐cyano‐2‐hetarylaminopyrimidines.
Authors: Shikhaliev Kh. S. , Kryl'skaya V. I. , Potapov A. Yu. 
Published: April 2007

AbstractChemInform 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.