bluuebunny/crossref_metadata_2025_split huggingface dataset:
Mechanical Properties of Robust Ultrathin Silk Fibroin Films
Authors: Jiang C. , Wang X. , Gunawidjaja R. , Lin Y.‐H. , Gupta M. K. , Kaplan D. L. , Naik R. R. , Tsukruk V. V. 
Published: August 2007

AbstractRobust ultrathin multilayer films of silk fibroin were fabricated by spin coating and spin‐assisted layer‐by‐layer assembly and their mechanical properties were studied both in tensile and compression modes for the first time. The ultrathin films were characterized by a high elastic modulus of 6–8 GPa (after treatment with methanol) with the ultimate tensile strength reaching 100 MPa. The superior toughness is also many times higher than that usually observed for conventional polymer composites (328 kJ m–3 for the silk material studied here versus typical values of < 100 kJ m–3). These outstanding properties are suggested to be caused by the gradual development of the self‐reinforcing microstructure of highly crystalline β‐sheets, serving as reinforcing fillers and physical crosslinks, a process that is well known for bulk silk materials but it is demonstrated here to occur in ultrathin films as well, despite their limited dimensions. However, the confined state within films thinner than the lengths of the extended domains causes a significantly reduced elasticity which should be considered in the design of nanosized films from silk materials. Such regenerated silk fibroin films with outstanding mechanical strength have potential applications in microscale biodevices, biocompatible implants, and synthetic coatings for artificial skin.
Warfarin reversal emerging as the major indication for fresh frozen plasma use at a tertiary care hospital
Authors: Ozgonenel Bulent , O'Malley Barbara , Krishen Priya , Eisenbrey A.B. 
Published: August 2007

AbstractBecause of the increase in the use of warfarin in the population in recent years, reversal of warfarin‐related coagulopathy has become common in daily hospital practice. Transfusion of fresh frozen plasma (FFP) is the preferred treatment method for urgent warfarin reversal in the USA. We have undertaken a 1‐month audit of FFP usage to ascertain the impact of warfarin use on the consumption of FFP. Sixty percent of the 376 units of FFP that were transfused during the study month were used to reverse warfarin effects. The most common reason to reverse warfarin was bleeding. Thirty‐three percent of the units were used for the treatment of other coagulopathies, 7% were used in therapeutic plasmapheresis, and <1% was transfused empirically. One hundred and eighteen patients received FFP during the study month. The study population consisted mostly of elderly patients (65%); however, the warfarin reversing patients consisted disproportionately more of elderly patients (75%) compared with patients receiving FFP for other reasons (46%) (P = 0.0032). Warfarin reversal emerged as the major indication for FFP use in this study. Blood banks of hospitals serving a predominantly elderly patient population should anticipate a higher consumption of FFP. Careful monitoring of warfarin therapy, stringent implementation of the warfarin reversal guidelines, and the introduction of newer products for warfarin reversal would help reduce the consumption of FFP. Am. J. Hematol., 2007. © 2007 Wiley‐Liss, Inc.
Influence of TESPT content on crosslink types and rheological behaviors of natural rubber compounds reinforced with silica
Authors: Choi Sung‐Seen , Kim Ik‐Sik , Woo Chang‐Su 
Published: August 2007

AbstractRheological behaviors in the rheographs and crosslink types of silica‐filled natural rubber compounds with differing contents of silane coupling agent were investigated. Bis‐(3‐(triethoxysilyl)‐propyl)‐tetrasulfide (TESPT) was used as a silane coupling agent. In the rheographs of the silica‐filled compounds containing TESPT, the local minimum torque regions after the maximum torque were observed, and the time to reach the local minimum torque was found to become faster with increase of the TESPT content. The reversion ratio, on the whole, was decreased by increasing the TESPT content. By increasing the TESPT content, the crosslink densities of the mono‐, di‐, and polysulfides were increased. Ratio of the polysulfides of the total crosslink density increased, while those of the mono‐ and disulfides decreased with increase of the TESPT content. Changes of the crosslink densities after thermal aging were also investigated. The experimental results were explained with the reduction of curatives adsorbed on the silica, increase of sulfur content, and crosslink formation between the silica and rubber by adding TESPT. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci 2007
Porous structure and liquid‐phase adsorption properties of activated carbon aerogels
Authors: Yang Wenjin , Wu Dingcai , Fu Ruowen 
Published: August 2007

AbstractIn this article, activated carbon aerogels (ACAs) were prepared by CO2 activation. Their pore structures were investigated by N2 adsorption–desorption analysis. ACAs have excellent microporosity (e.g. 0.36 cm3/g) and mesoporosity (e.g. 1.72 cm3/g). Adsorption characteristics of phenol, methylene blue, I2, and VB12 on ACAs in the liquid phase were studied by static adsorption experiments. Results showed that CO2 activation process is an effective way to introduce micropores in carbon aerogels, which is enhanced with the increase of activation time. As a result, the adsorption capacities of the four mentioned adsorbates on ACAs were improved gradually with the increase of activation time. However, mesopore volume is also a factor on improving adsorption properties for the relatively giant molecules methylene blue and VB12. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci 2007
A new technique for foaming submicron size poly(methyl methacrylate) particles
Authors: Ogawa Hiroyuki , Ito Akihiro , Taki Kentaro , Ohshima Masahiro 
Published: August 2007

AbstractAbout 0.7–2 μm diameter poly (methyl methacrylate) (PMMA) foamed particles were prepared via thermally induced phase separation (TIPS) from a PMMA/ethanol mixture and vacuum dried. It was found that ethanol, known to be a poor solvent to PMMA, could dissolve PMMA when the temperature was over 60°C. The solubility of PMMA (Mw = 15,000 and Mw = 120,000) in ethanol was measured and was found to increase as the temperature increased. PMMA particles on the scale of submicron and single micron diameter could be precipitated from the PMMA/ethanol solution by temperature quenching. Then, since the precipitated particles contained a certain amount of ethanol, the precipitated particles could be foamed using the ethanol as a foaming agent in a vacuum drying process. Vacuum drying at temperatures slightly below the glass transition temperature of the polymer could make the particles foam. The effects of foaming temperature and the molecular weight of the polymer on the size of foamed particles were investigated. The experimental results showed that the vapor pressure and the molecular weight of the polymer are key factors determining the expandability of the micro particles. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci 2007
Impact of anastomotic leakage on oncological outcome after rectal cancer resection
Authors: Ptok H , Marusch F , Meyer F , Schubert D , Gastinger I , Lippert H 
Published: August 2007

Abstract

Background
Anastomotic leakage has a major impact on morbidity and mortality in rectal cancer surgery. Its relevance to oncological outcome is controversial. This observational study investigated the influence of anastomotic leakage on oncological outcome.

Methods
Data for 1741 patients undergoing curative resection of rectal cancer (located less than 12 cm from the anal verge) with normal healing were compared with those for 303 patients who experienced anastomotic leakage. Morbidity, mortality and long-term oncological outcomes were analysed.

Results
Median follow-up was 40 months. Patients with anastomotic leakage had a higher postoperative mortality rate than those with no leakage (4·3 versus 1·2 per cent; P &lt; 0·001). Patients with leakage necessitating surgical treatment had a higher 5-year local recurrence rate (17·5 versus 10·1 per cent; P = 0·006) and a lower 5-year disease-free survival rate (70·9 versus 75·4 per cent; P = 0·020) than those without leakage. Patients with anastomotic leakage not requiring surgical intervention did not have a worse oncological outcome.

Conclusion
A negative prognostic impact of anastomotic leakage on local recurrence and disease-free survival was found only for patients with leakage needing surgical revision.
Laparoscopic approach in surgical treatment of rectal cancer
Authors: Laurent C , Leblanc F , Gineste C , Saric J , Rullier E 
Published: August 2007

Abstract

Background
High rates of conversion to open operation and morbidity have been reported after laparoscopic total mesorectal excision (TME) with sphincter preservation for rectal cancer. This study examined risk factors for conversion and morbidity to determine which patients with rectal cancer could benefit from a laparoscopic resection.

Methods
Two hundred patients (117 men) with mid and low rectal cancer treated by laparoscopic TME were studied. The impact of clinical and pathological characteristics on conversion and complications was assessed by multivariable analysis.

Results
Reconstruction after TME included 79 low colorectal and 121 coloanal anastomoses. Conversion was necessary in 31 patients (15·5 per cent), and was independently associated with sex, type of anastomosis and intraoperative rectal fixity. Postoperative morbidity in 50 patients (25·0 per cent) was independently associated with sex and type of anastomosis. Men with a stapled anastomosis had a threefold higher rate of conversion (13 (34 per cent) of 38 versus 18 (11·1 per cent) of 162; P &lt; 0·001) and morbidity (22 (58 per cent) versus 28 (17·3 per cent); P &lt; 0·001) than other patients.

Conclusion
Laparoscopic TME is a good option for women and for men treated by coloanal anastomosis. Technical improvement of laparoscopic stapling is needed before the laparoscopic approach can be offered to all patients.
Bond Paths as Privileged Exchange Channels
Authors: Pendás A. Martín , Francisco Evelio , Blanco Miguel A. , Gatti Carlo 
Published: August 2007

AbstractEvidence that the bond paths of the quantum theory of atoms‐in‐molecules (QTAIM) signal preferred quantum‐mechanical exchange channels is presented. We show how bond paths between an atom A and the atoms B in its environment appear to be determined by competition among the A–B exchange‐correlation energies that always contribute to stabilize the A–B interactions. These pairwise additive stabilizations depend neither on the attractive or repulsive nature of the classical electrostatic interaction between the atoms' charge densities, nor on the change in the self energies of the atoms involved. These other terms may well cause an overall molecular‐energy increase in spite of a possibly large A–B exchange‐correlation stabilization. After our proposal, bond paths, both at and out of equilibrium geometries, are endowed with a specific energetic meaning that should contribute to reconcile the orthodox QTAIM interpretation with other widely accepted views, and to settle recent controversies questioning the meaning of hydrogen–hydrogen bonding and the nature of the so‐called “steric interactions”, the role of bond paths in endohedral complexes, and the generality of the results provided by the QTAIM. Implications for the nature of more general closed‐shell interactions are also briefly discussed.
Structure and Stability of VO2+ in Aqueous Solution: A Car—Parrinello and Static ab initio Study.
Authors: Sadoc Aymeric , Messaoudi Sabri , Furet Eric , Gautier Regis , Le Fur Eric , le Polles Laurent , Pivan Jean‐Yves 
Published: August 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.
Intense Emission of Ca5(PO4)3F:Tb3+ under VUV Excitation and Its Potential Application in PDPs.
Authors: Liang Hongbin , Zeng Qu , Tian Zifeng , Lin Huihong , Su Qiang , Zhang Guobin , Fu Yibing 
Published: August 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.
Lithium Dimer Formation in the Li‐Conducting Garnets Li5+xBaxLa3‐xTa2O12 (0 < x ≤ 1.6).
Authors: O'Callaghan Michael P. , Cussen Edmund J. 
Published: August 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.
Oxygen Vacancy Ordering Phenomena in the Mixed‐Conducting Hexagonal Perovskite Ba7Y2Mn3Ti2O20.
Authors: Kuang Xiaojun , Allix Mathieu , Ibberson Richard M. , Claridge John B. , Niu Hongjun , Rosseinsky Matthew J. 
Published: August 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.
Neutron Diffraction Study on the Magnetic Structure of (Fe0.70Co0.30)2P.
Authors: Jain S. K. , Kumar Sudhish , Krishna P. S. R. , Shinde A. B. , Krishnamurthy Anjali , Srivastava Bipin K. 
Published: August 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.
Interaction of the Components in the Dy—Ag—Sn Ternary System at 870 K.
Authors: Romaka V. V. , Tkachuk A. , Davydov V. 
Published: August 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.
Investigation of the R2Se3—Cu2Se—In2 Se3 (R: La, Pr, Y and Er) Systems at 870 K and Crystal Structure of the R2CuInSe5 (R: La, Ce and Pr) Compounds.
Authors: Huch M. R. , Gulay L. D. , Olekseyuk I. D. 
Published: August 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 Preparation and Electrochemical Properties of Cubic‐Phase Li4Mn5O12 Nanowires.
Authors: Tian Yang , Chen Dairong , Jiao Xiuling , Duan Yongzheng 
Published: August 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.
Application of Ferrocenyl‐Substituted Aziridinylmethanols (FAM) as Chiral Ligands in Enantioselective Conjugate Addition of Diethylzinc to Enones.
Authors: Isleyen Alper , Dogan Oezdemir 
Published: August 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.
Secondary Benzylation with Benzyl Alcohols Catalyzed by a High‐Valent Heterobimetallic Ir—Sn Complex.
Authors: Podder Susmita , Choudhury Joyanta , Roy Sujit 
Published: August 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.
Aerobic Oxidation of Alcohols under Visible Light Irradiation of Fluorescent Lamp.
Authors: Hirashima Shin‐ichi , Itoh Akichika 
Published: August 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.
Oxidative Cleavage of 1,2‐Diols, α‐Ketols and 1,2‐Diketones with Aqueous Sodium Hypochlorite.
Authors: Khurana J. M. , Sharma P. , Gogia A. , Kandpal B. M. 
Published: August 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 and Selective Oxidation of Benzylic Alcohols to Their Corresponding Carbonyl Compounds with Sodium Nitrate in the Presence of Broensted Acidic Ionic Liquids.
Authors: Hajipour Abdol R. , Rafiee F. , Ruoho A. E. 
Published: August 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.
Nitration of Aromatic Compounds Catalyzed by Divanadium‐Substituted Molybdophoshoric Acid, H5[PMo10V2O40].
Authors: Heravi Majid M. , Bakhtiari Khadijeh , Benmorad Tina , Bamoharram Fatemeh F. , Oskooie Hossein A. , Tehrani Maryam H. 
Published: August 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.
Modern Friedel—Crafts Chemistry. Part 27. Alkylation of Benzene with 1‐Benzyl‐ and 1‐Phenylcyclohexanols in the Presence of H2SO4 and AlCl3/CH3NO2 Catalysts.
Authors: Khalaf Ali A. , Awad Ibrahim M. , El‐Emary Talaat I. , El‐Aal Hassan A. K. Abd 
Published: August 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.
Direct Catalytic Asymmetric Olefin Metathesis. Selectivity Control by Enoate and Ynoate Groups in Ru‐Catalyzed Asymmetric Ring‐Opening/Cross‐Metathesis.
Authors: Giudici Russell E. , Hoveyda Amir H. 
Published: August 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.
Photoacylation of Alcohols in Neutral Medium.
Authors: Debieux Jean‐Luc , Cosandey Anne , Helgen Celine , Bochet Christian G. 
Published: August 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 Alkylation of Acyclic α,α‐Disubstituted Tributyltin Enolates Catalyzed by a {Cr(salen)} Complex.
Authors: Doyle Abigail G. , Jacobsen Eric N. 
Published: August 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 Reactions of α‐ and β‐Bromo Aldehydes with Amides and Dienophiles — An Easy Way to Versatile 1‐Amido‐2‐cyclohexenes.
Authors: Huebner Sandra , Neumann Helfried , Michalik Dirk , Klaus Stefan , Struebing Dirk , Spannenberg Anke , Jacobi von Wangelin Axel , Beller Matthias 
Published: August 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.
Heck Arylations of Pent‐4‐enoates or Allylmalonate Using a Palladium/Tetraphosphine Catalyst.
Authors: Lemhadri Mhamed , Battace Ahmed , Zair Touriya , Doucet Henri , Santelli Maurice 
Published: August 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.
Efficient Conversion of Aromatic Amines into Azides: A One‐Pot Synthesis of Triazole Linkages.
Authors: Barral Karine , Moorhouse Adam D. , Moses John E. 
Published: August 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 Substituted 2‐Hydroxyaryl Aldehydes by the Microwave‐Induced Reimer—Tiemann Reaction.
Authors: Vibhute Yeshwant B. , Lonkar Subhash M. , Sayyed Mudassar A. , Baseer Mohammad A. 
Published: August 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.
Asymmetric Thio‐Michael/Nucleophilic Addition Domino Reaction with Chiral N‐Sulfinimines.
Authors: Kamimura Akio , Okawa Hidenori , Morisaki Yuki , Ishikawa Shingo , Uno Hidemitsu 
Published: August 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.
An Efficient and Stereoselective Synthesis of (Z)‐Allyl Chlorides from Baylis—Hillman Adducts Using Vilsmeier—Haack Reagent.
Authors: Liu Y. , Zheng H. , Xu D. , Xu Z. , Zhang Y. 
Published: August 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.
Kinetic Resolution of Hydroperoxides with Enantiopure Phosphines: Preparation of Enantioenriched Tertiary Hydroperoxides.
Authors: Driver Tom G. , Harris Jason R. , Woerpel K. A. 
Published: August 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 Characterization of R2PN=P(iBuNCH2CH2)3N: A New Bulky Electron‐Rich Phosphine for Efficient Pd‐Assisted Suzuki—Miyaura Cross‐Coupling Reactions.
Authors: Kingston Jesudoss V. , Verkade John G. 
Published: August 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.
Highly Efficient Suzuki—Miyaura Coupling Reactions Catalyzed by Bis(oxazolinyl)phenyl—Pd(II) Complex.
Authors: Takemoto Toshihide , Iwasa Seiji , Hamada Hiroshi , Shibatomi Kazutaka , Kameyama Masayuki , Motoyama Yukihiro , Nishiyama Hisao 
Published: August 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.
Gold‐Catalyzed Deoxygenated Cyclization of cis‐2,4‐Dien‐1‐als with Regioselective Addition of Two Nucleophiles. One‐Pot Synthesis of Highly Functionalized Cyclopentene Framework.
Authors: Lin Chung‐Chang , Teng Tse‐Min , Odedra Arjan , Liu Rai‐Shung 
Published: August 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.
Lead(IV) Acetate: An Efficient Reagent for the Synthesis of Pyrrolidinofullerenes via Oxidative Coupling of C60 with Amino Acids Esters.
Authors: Troshina Olesya A. , Troshin Pavel A. , Peregudov Alexander S. , Lyubovskaya Rimma N. 
Published: August 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.
Suzuki Cross‐Coupling on Enantiomerically Pure Epoxides: Efficient Synthesis of Diverse, Modular Amino Alcohols from Single Enantiopure Precursors.
Authors: Cattoen Xavier , Pericas Miquel A. 
Published: August 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.