bluuebunny/crossref_metadata_2025_split huggingface dataset:
ChemInform Abstract: A Lewis Acid Promoted Reduction of Acylsilanes to α‐Hydroxysilanes by Diethylzinc.
Authors: Gao Guang , Bai Xing‐Feng , Li Fei , Zheng Long‐Sheng , Zheng Zhan‐Jiang , Lai Guo‐Qiao , Jiang Kezhi , Li Fuwei , Xu Li‐Wen 
Published: July 2012

AbstractTitanium(IV) isopropanolate is an efficient promotor in the preparation process of the synthetically important title compounds.
ChemInform Abstract: Special Features of Reaction of 2‐(5‐Methyl‐2‐phenyl‐2H‐1,2,3‐diazaphosphol‐4‐yl)‐4H‐benzo [d]‐1,3,2‐dioxaphosphorin‐4‐one with Diethyl Mesoxalate.
Authors: Mironov V. F. , Ivkova G. A. , Abdrakhmanova L. M. , Burnaeva L. M. , Musin R. Z. , Kharlamov S. V. , Konovalova I. V. 
Published: July 2012

AbstractThe reaction proceeds with excellent regioselectivity by ring expansion at the lactone functionality to give a dioxaphosphepinedione derivative (III).
ChemInform Abstract: Ring Enlargement versus Selenoetherification on the Reaction of Allenyl Oxindoles with Selenenylating Reagents.
Authors: Alcaide Benito , Almendros Pedro , Luna Amparo , Gomez‐Campillos Gonzalo , Torres M. Rosario 
Published: July 2012

AbstractTreatment of the allenyl oxindoles (I) with phenylselenium compounds results in formation of spirocyclic selenolactams and/or unexpected ring enlargement products like (III) and (IV).
ChemInform Abstract: Highly Stereoselective Method to Prepare Bis‐phenylchalcogen Alkenes via Addition of Chalcogenolate to Phenylseleno Alkynes.
Authors: Perin Gelson , Borges Elton L. , Alves Diego 
Published: July 2012

AbstractA new method is presented which uses nucleophilic species of chalcogenium anions, generated in situ from diphenylchalcogenides with NaBH4, to yield (Z)‐1,2‐bis‐phenylchalcogen alkenes stereoselectively.Only in the case of the terminal alkyne (IX), a trisubstituted product (XI) is formed as main component.
ChemInform Abstract: Ionic Liquid/PPh3 Promoted Cleavage of Diphenyl Disulfide and Diselenide: A Straight‐Forward Metal‐Free One‐Pot Route to the Synthesis of Unsymmetrical Sulfides and Selenides.
Authors: Banerjee Subhash , Adak Laksmikanta , Ranu Brindaban C. 
Published: July 2012

AbstractSelenate and thiolate anions, generated in situ, react with halides and activated alkenes to give the title compounds.
ChemInform Abstract: Novel Route to the Synthesis of Chalcogenolanes, Chalcogenanes, and 1,2‐Dichalcogenaepanes.
Authors: Levanova E. P. , Grabel'nykh V. A. , Elaev A. V. , Russavskaya N. V. , Klyba L. V. , Albanov A. I. , Korchevin N. A. 
Published: July 2012

AbstractTitle compounds (II), (III) and (IV) are prepared by reaction of dibromoalkanes (I) with potassium chalcogenides.
ChemInform Abstract: Twelve Novel and Diverse 16‐Norphragmalin‐Type Limonoids from Chukrasia tabularis var. velutina.
Authors: Luo Jun , Li Yi , Wang Jun‐Song , Lu Juan , Wang Xiao‐Bing , Luo Jian‐Guang , Kong Ling‐Yi 
Published: July 2012

AbstractIsolation, structural elucidation and antiinflammatory activity of novel 16‐norphragmalin‐type limonoids, chuktabrins C‐J [cf.
ChemInform Abstract: Constituents from the Roots of Taraxacum platycarpum and Their Effect on Proliferation of Human Skin Fibroblasts.
Authors: Warashina Tsutomu , Umehara Kaoru , Miyase Toshio 
Published: July 2012

AbstractA variety of triterpenes, sesquiterpene glycosides and a phenylpropyl glycoside, including eight new triterpenes such as (I)—(V) and sequiterpene glycoside (VI) are isolated.
ChemInform Abstract: Labdane‐Type Diterpenoids from the Rhizomes of Hedychium coronarium Inhibit Lipopolysaccharide‐Stimulated Production of Proinflammatory Cytokines in Bone Marrow‐Derived Dendritic Cells.
Authors: Kim Young Ho , et al. et al. 
Published: July 2012

AbstractTwo new ladbanes, hedycoronens A (Ia) and B (Ib), are isolated together with four known compounds.
ChemInform Abstract: Six New Secoiridoids from the Dried Fruits of Ligustrum lucidum.
Authors: Aoki Syota , Honda Yurika , Kikuchi Tomoyuki , Miura Takumi , Sugawara Ryo , Yaoita Yasunori , Kikuchi Masao , Machida Koichi 
Published: July 2012

AbstractSix new secoiridoids, named isoligustrosidic acid (I), 6′‐O‐trans‐cinnamoyl‐ 8‐epikingisidic acid (IIa), 6′‐O‐cis‐cinnamoyl‐8‐epikingisidic acid (IIb), oleopolynuzhenide A, nuzhenal A (III) and nuzhenal B (IV) are isolated and their structures are established.
ChemInform Abstract: Sesquiterpenes and Other Constituents from Dendranthema zawadskii var. latilobum.
Authors: Shin Hyun Jung , Lee So Young , Kim Ju Sun , Lee Sanghyun , Choi Ran Joo , Chung Ha Sook , Kim Yeong Shik , Kang Sam Sik 
Published: July 2012

AbstractSix new germacranolides, namely zawadskinolides A ‐ F (I) ‐ (IV) and a new eudesmane glucoside, namely chrysantiloboside (V) are isolated and their structure elucidated.
ChemInform Abstract: Sesquiterpenes from an Egyptian Herbal Medicine, Pulicaria undulate, with Inhibitory Effects on Nitric Oxide Production in RAW264.7 Macrophage Cells.
Authors: Hegazy Mohamed‐Elamir F. , Matsuda Hisashi , Nakamura Seikou , Yabe Mikuko , Matsumoto Tomoko , Yoshikawa Masayuki 
Published: July 2012

AbstractThe new isolated compounds 5α‐hydroperoxyivalin (I), 8‐epi‐xanthanol (II) and 8‐epi‐isoxanthanol (III) exhibit only moderate inhibitory effects on nitric oxide production in RAW 264.7 macrophage cells.
ChemInform Abstract: New Chiral Aminoamidoximes: Syntheses and Investigation of Heterocyclic Compounds.
Authors: Tka Najeh , Ben Hassine Bechir 
Published: July 2012

AbstractCompounds (III) and (V) can be treated with α‐bromoacid chlorides and aldehydes to undergo intermolecular cyclizations through oxygen and nitrogen at low and high temperatures.
ChemInform Abstract: Rupestines F—M, New Guaipyridine Sesquiterpene Alkaloids from Artemisia rupestris.
Authors: He Fei , Nugroho Alfarius Eko , Wong Chin Piow , Hirasawa Yusuke , Shirota Osamu , Morita Hiroshi , Aisa Haji Akber 
Published: July 2012

AbstractEight new guaipyridine sesquiterpene alkaloids, rupestines F‐M, are isolated and their structures and absolute configurations are elucidated.
ChemInform Abstract: New Tricyclic Alkaloids, Cassiarins G, H, J, and K from Leaves of Cassia siamea.
Authors: Deguchi Jun , Hirahara Tomoe , Hirasawa Yusuke , Ekasari Wiwied , Widyawaruyanti Aty , Shirota Osamu , Shiro Motoo , Morita Hiroshi 
Published: July 2012

AbstractFour new alkaloids, cassiarin G (I), H (II), J (III) and K (IV), are isolated.
ChemInform Abstract: Synthesis of Novel Aza‐Analogues of Tiazofurin with 2‐[5,5‐Bis(hydroxymethyl)pyrrolidin‐2‐yl] Framework as Sugar Mimic.
Authors: Mironiuk‐Puchalska Ewa , Koszytkowska‐Stawinska Mariola , Sas Wojciech , De Clercq Erik , Naesens Lieve 
Published: July 2012

AbstractNo antiviral activity or cytotoxic effects are detected for the novel tiazofurin aza‐analogue (XI) as well as its hydrazide and hydroxylamide analogues.
ChemInform Abstract: Synthesis of 2′‐Substituted Inosine Analogues via Unusual Masking of the 6‐Hydroxyl Group.
Authors: Casu Fabio , Harston Rebecca K. , Chiacchio Maria A. , Gumina Giuseppe 
Published: July 2012

Abstract2′‐Modified inosine analogues (V) and (X) are synthesized from 6‐chloropurine riboside (I) via 6‐(dimethylamino)purine (IV) or 6‐(benzyloxy)purine (VIII) intermediates.
ChemInform Abstract: Halenaquinone Derivatives from Tropical Marine Sponge Xestospongia sp.
Authors: Lee Yeon‐Ju , Kim Chang‐Kwon , Park Song‐Kyu , Kang Jong‐Soon , Lee Jong Seok , Shin Hee Jae , Lee Hyi‐Seung 
Published: July 2012

AbstractThe new halenaquinone derivative (I) is isolated from the extract of the Micronesian marine sponge of the genus Xestospongia along with seven known related polyketides.
ChemInform Abstract: Acaricidal Activity of DHEMH, Derived from Patchouli Oil, Against House Dust Mite, Dermatophagoides farinae.
Authors: Wu Hai‐Qiang , Li Li , Li Jing , He Zhen‐Dan , Liu Zhi‐Gang , Zeng Qing‐Qian , Wang Yu‐Sheng 
Published: July 2012

AbstractNew compound (I) is isolated together with 15 known compounds from patchouli oil.
ChemInform Abstract: New Flavan (I) and Benzil (II) Isolated from Fissistigma latifolium.
Authors: Lan Yu‐Hsuan , Peng Yi‐Ting , Thang Tran‐Dinh , Hwang Tsong‐Long , Dai Do‐Ngoc , Leu Yann‐Lii , Lai Wan‐Chun , Wu Yang‐Chang 
Published: July 2012

AbstractThe new flavan shows significant antiinflammatory activities and inhibits the superoxide anion generation by fMLP/CB‐induced human neutrophils.
ChemInform Abstract: A Fascinating Journey into History: Exploration of the World of Isonitriles en Route to Complex Amides
Authors: Wilson Rebecca M. , Stockdill Jennifer L. , Wu Xiangyang , Li Xuechen , Vadola Paul A. , Park Peter K. , Wang Ping , Danishefsky Samuel J. 
Published: July 2012

AbstractReview: 35 refs.
ChemInform Abstract: The Development of Bulky Palladium NHC Complexes for the Most‐Challenging Cross‐Coupling Reactions.
Authors: Valente Cory , Calimsiz Selcuk , Hoi Ka Hou , Mallik Debasis , Sayah Mahmoud , Organ Michael G. 
Published: July 2012

AbstractReview: 148 refs.
ChemInform Abstract: Dibenzo[b,f]oxepin‐10(11H)‐one and Dibenzo[b,f]thiepin‐10(11H)‐one as Useful Synthons in the Synthesis of Various Dibenzo[e,h]azulenes
Authors: Pesic Dijana , Landek Ivana Ozimec , Rupcic Renata , Modric Marina , Dzapo Iva , Trojko Rudolf , Mercep Mladen , Mesic Milan 
Published: July 2012

AbstractReview: 60 refs.
ChemInform Abstract: Diversity‐Oriented Synthesis of Functionalized Phenols by Regioselective [3 + 3] Cyclocondensations of 1,3‐Bis(silyloxy)‐1,3‐butadienes with 3‐Alkoxy‐2‐en‐1‐ones and Related Substrates
Authors: Karapetyan Gnuni , Dang Tuan T. , Sher Muhammad , Ghochikyan Tariel V. , Saghyan Ashot , Langer Peter 
Published: July 2012

AbstractReview: 68 refs.
ChemInform Abstract: Use of Linear Free Energy Relationships (LFERs) to Elucidate the Mechanisms of Reaction of a γ‐Methyl‐β‐alkynyl and an ortho‐Substituted Aryl Chloroformate Ester
Authors: D'Souza Malcolm J. , Knapp Jaci A. , Fernandez‐Bueno Gabriel A. , Kevill Dennis N. 
Published: July 2012

AbstractReview: 76 refs.
Adaptive spectrum access strategies in the context of spectrum fragmentation in cognitive radio networks
Authors: Lu Yanhui , Cao Huijin , Mu Xiaomin , Yang Shouyi 
Published: July 2012

SUMMARYBecause of the presence of incumbents in cognitive radio networks, the unused spectrum in the TV bands, popularly referred to as ‘white spaces’, are fragmented with the size of each fragment varying from one TV channel to several TV channels. What is more, because the secondary transmissions adjust their spectrum usage over time, white spaces become increasingly partitioned into a collection of discrete fragments, which decreases the spectral utilization. To improve throughputs, most of the prior researches focused on selecting the best transmission channel in the context of spectrum fragmentation but have rarely involved aggregating the fragmentation to a contiguous channel. In this paper, we present two adaptive spectrum access strategies, both of which not only select the best transmission channel but also efficiently solve the fragmentation problem. The first strategy involves one‐agile radios that build a transmission using single fragment of frequency, which partially remedy the fragmentation problem using higher‐layer solutions. The second strategy suppresses the impact of spectrum fragmentation successfully at the physical layer by combining k spectrum fragments to form a single transmission. The simulation results show that both of the strategies bring larger throughputs compared with the prior solutions. Copyright © 2012 John Wiley & Sons, Ltd.
Analyses of baby name popularity distribution in U.S. for the last 131 years
Authors: Li Wentian 
Published: July 2012

AbstractWe examine the complete dataset of baby name popularity collected by U.S. Social Security Administration for the last 131 years (1880–2010). The ranked baby name popularity can be fitted empirically by a piecewise function consisting of Beta function for the high‐ranking names and power‐law function for low‐ranking names, but not power‐law (Zipf's law) or Beta function by itself. © 2012 Wiley Periodicals, Inc. Complexity, 2012
Fungal soil communities in a young transgenic poplar plantation form a rich reservoir for fungal root communities
Authors: Danielsen L. , Thürmer A. , Meinicke P. , Buée M. , Morin E. , Martin F. , Pilate G. , Daniel R. , Polle A. , Reich M. 
Published: July 2012

AbstractFungal communities play a key role in ecosystem functioning. However, only little is known about their composition in plant roots and the soil of biomass plantations. The goal of this study was to analyze fungal biodiversity in their belowground habitats and to gain information on the strategies by which ectomycorrhizal (ECM) fungi form colonies. In a 2‐year‐old plantation, fungal communities in the soil and roots of three different poplar genotypes (Populus × canescens, wildtype and two transgenic lines with suppressed cinnamyl alcohol dehydrogenase activity) were analyzed by 454 pyrosequencing targeting the rDNA internal transcribed spacer 1 (ITS) region. The results were compared with the dynamics of the root‐associated ECM community studied by morphotyping/Sanger sequencing in two subsequent years. Fungal species and family richness in the soil were surprisingly high in this simple plantation ecosystem, with 5944 operational taxonomic units (OTUs) and 186 described fungal families. These findings indicate the importance that fungal species are already available for colonization of plant roots (2399 OTUs and 115 families). The transgenic modification of poplar plants had no influence on fungal root or soil communities. Fungal families and OTUs were more evenly distributed in the soil than in roots, probably as a result of soil plowing before the establishment of the plantation. Saprophytic, pathogenic, and endophytic fungi were the dominating groups in soil, whereas ECMs were dominant in roots (87%). Arbuscular mycorrhizal diversity was higher in soil than in roots. Species richness of the root‐associated ECM community, which was low compared with ECM fungi detected by 454 analyses, increased after 1 year. This increase was mainly caused by ECM fungal species already traced in the preceding year in roots. This result supports the priority concept that ECMs present on roots have a competitive advantage over soil‐localized ECM fungi.
From where did the Western honeybee (Apis mellifera) originate?
Authors: Han Fan , Wallberg Andreas , Webster Matthew T. 
Published: July 2012

AbstractThe native range of the honeybee Apis mellifera encompasses Europe, Africa, and the Middle East, whereas the nine other species of Apis are found exclusively in Asia. It is therefore commonly assumed that A. mellifera arose in Asia and expanded into Europe and Africa. However, other hypotheses for the origin of A. mellifera have also been proposed based on phylogenetic trees constructed from genetic markers. In particular, an analysis based on >1000 single‐nucleotide polymorphism markers placed the root of the tree of A. mellifera subspecies among samples from Africa, suggestive of an out‐of‐Africa expansion. Here, we re‐evaluate the evidence for this and other hypotheses by testing the robustness of the tree topology to different tree‐building methods and by removing specimens with a potentially hybrid background. These analyses do not unequivocally place the root of the tree of A. mellifera subspecies within Africa, and are potentially consistent with a variety of hypotheses for honeybee evolution, including an expansion out of Asia. Our analyses also support high divergence between western and eastern European populations of A. mellifera, suggesting they are likely derived from two distinct colonization routes, although the sources of these expansions are still unclear.
Nine‐Year Follow‐up of girls with Anorexia Nervosa and their Siblings: Retrospective Perceptions of Parental Bonding and the Influence of Illness on their Everyday Life
Authors: Halvorsen Inger , Rø Øyvind , Heyerdahl Sonja 
Published: July 2012

AbstractBackgroundFew previous anorexia nervosa (AN) studies include siblings.ObjectiveTo investigate if adolescents with AN retrospectively perceived their parents as less caring and more controlling than their siblings, whether perceived parenting was related to psychological problems, and how AN had influenced their everyday lives.MethodForty‐six former patients (mean age 23.1 years) and 21 siblings participated in the study by completing the Parental Bonding Inventory (PBI) and a questionnaire on the influence of AN during the acute phase.ResultsFormer patients and their siblings had similar PBI results. Better adaptive functioning and lower levels of internalising psychological problems were correlated with higher ratings of parental care in both patients and siblings. Both patients and siblings reported that the illness had created conflict and caused concern, but had also provided valuable experiences.ConclusionPerceived parenting was associated with psychological problems in young adulthood but not with eating disorders. Our PBI results for both former patients and siblings were quite similar to non‐clinical control groups. Health personnel treating adolescent AN should be aware of siblings' perspectives and needs. Copyright © 2012 John Wiley & Sons, Ltd and Eating Disorders Association.
Experiment studies on the effect of altitude on Jet A's flash point
Authors: Tang Yanfei , Niu Yi , Yin Lei , Zhou Dechuang , Wang Jian 
Published: July 2012

ABSTRACTThis paper is to investigate the effect of altitude on Jet A's flash point using the experimental method. Firstly, the vapor pressure of four fuels is measured by saturated steam pressure tester with ND‐1 pressure sensor in the low‐pressure environment under nine different temperatures, and the results show that the Clausius–Clapeyron relationship between vapor pressure and temperature is applicable to the multicomponent mixture. Secondly, the BS‐1 closed bomb apparatus is used to measure the oil samples, and the hypobaric chamber is applied to change the environment pressure from 55to 101.3 kPa. The flash point is found to decrease nonlinearly with the altitude increasing on the basis of the notion of a critical value of fuel–air mass ratio equals to 0.065 at the minimum flammability limit. Only when the atmospheric pressure approximates normal atmosphere does the flash point decrease linearly with the increase in altitude. This discovery agrees well with J.E. Shepherd's research. Thence, the experiment results provide scientific data for the safety of aircraft tank and benefit fire protection, such as inflammable liquid transport, storage, and so on, in oil pipeline management. Copyright © 2012 John Wiley & Sons, Ltd.
Water use indicators at farm scale: methodology and case study
Authors: Prochnow Annette , Drastig Katrin , Klauss Hilde , Berg Werner 
Published: July 2012

AbstractIndicators for water use at farm scale can assist farmers in understanding the water flows on their farms and in optimizing water use by adapting agronomic measures and farm management. The objective of this work is to develop a methodology to estimate water flows at the farm scale, to derive indicators for farm water use, and to apply them in a first case study. After the spatial and temporal boundaries of the farm system and the water flows are defined, three indicators to assess water use at the farm scale are developed: farm water productivity, degree of water utilization, and specific inflow of technical water. Farm water productivity describes the ratio of farm output to water input, where the water input is the total of those water inflows into the farm system that can be assigned to the generation of farm output. Farm output is expressed on a mass basis, food energy basis, and monetary basis. The degree of water utilization characterizes the relationship between productive water to the total water inflow into the farm system, where productive water comprises those water flows that directly contribute to biomass generation via plant and animal metabolism. The specific technical water inflow quantifies the water inflow into the system by technical means relative to the farm area. The application of the methodology in a first case study for a mixed crop‐livestock farm with 2869 ha in Germany results in a farm water productivity of 2.30 kg fresh mass per , 1.03 kg dry mass per , 5.96 GJ , and 0.25 € . The degree of water utilization is 0.56. The specific technical water inflow is 36.5 m3 ha−1 year−1. Factors that mainly effect these indicators and general approaches to optimize water use in farms are discussed as well as the further research required for practical implementation.
The relationship between functional status and judgment/problem solving among individuals with dementia
Authors: Mayo Ann M. , Wallhagen Margaret , Cooper Bruce A. , Mehta Kala , Ross Leslie , Miller Bruce 
Published: July 2012

ObjectiveTo determine the relationship between functional status (independent activities of daily living) and judgment/problem solving and the extent to which select demographic characteristics such as dementia subtype and cognitive measures may moderate that relationship in older adult individuals with dementia.MethodsThe National Alzheimer's Coordinating Center Universal Data Set was accessed for a study sample of 3,855 individuals diagnosed with dementia. Primary variables included functional status, judgment/problem solving, and cognition.ResultsFunctional status was related to judgment/problem solving (r = 0.66; p < 0.0005). Functional status and cognition jointly predicted 56% of the variance in judgment/problem solving (R2 = 0.56, p < 0.0005). As cognition decreases, the prediction of poorer judgment/problem solving by functional status became stronger.ConclusionsAmong individuals with a diagnosis of dementia, declining functional status as well as declining cognition should raise concerns about judgment/problem solving. Copyright © 2012 John Wiley & Sons, Ltd.
Reversal of pathology in CHMP2B‐mediated frontotemporal dementia patient cells using RNA interference
Authors: Nielsen Troels Tolstrup , Mizielinska Sarah , Hasholt Lis , Isaacs Adrian M. , Nielsen Jørgen E. ,   the FReJA Consortium
Published: July 2012

AbstractBackgroundFrontotemporal dementia is the second most common form of young‐onset dementia after Alzheimer's disease, and several genetic forms of frontotemporal dementia are known. A rare genetic variant is caused by a point mutation in the CHMP2B gene. CHMP2B is a component of the ESCRT‐III complex, which is involved in endosomal trafficking of proteins targeted for degradation in lysosomes. Mutations in CHMP2B result in abnormal endosomal structures in patient fibroblasts and patient brains, probably through a gain‐of‐function mechanism, suggesting that the endosomal pathway plays a central role in the pathogenesis of the disease.MethodsIn the present study, we used lentiviral vectors to efficiently knockdown CHMP2B by delivering microRNA embedded small hairpin RNAs.ResultsWe show that CHMP2B can be efficiently knocked down in patient fibroblasts using an RNA interference approach and that the knockdown causes reversal of the abnormal endosomal phenotype observed in patient fibroblasts.ConclusionsThis is the first description of a treatment that reverses the cellular pathology caused by mutant CHMP2B and suggests that RNA interference might be a feasible therapeutic strategy. Furthermore, it provides the first proof of a direct link between the disease‐causing mutation and the cellular phenotype in cells originating from CHMP2B mutation patients. Copyright © 2012 John Wiley & Sons, Ltd.