bluuebunny/crossref_metadata_2025_split huggingface dataset:
ChemInform Abstract: Pyridyl Directed Catalyst‐Free trans‐Hydroboration of Internal Alkynes.
Authors: Yuan Kang , Suzuki Naoya , Mellerup Soren K. , Wang Xiang , Yamaguchi Shigehiro , Wang Suning 
Published: June 2016

AbstractTrans‐hydroboration of internal alkynes with 9‐BBN produces five‐membered BN‐heterocycles in a straightforward manner.
ChemInform Abstract: Microwave‐Assisted Copper‐ and Palladium‐Catalyzed Sonogashira‐Type Coupling of Aryl Bromides and Iodides with Trimethylsilylacetylene.
Authors: Lei Yonghua , Hu Tianhan , Wu Xingsen , Wu Yue , Xiang Hua , Sun Haopeng , You Qidong , Zhang Xiaojin 
Published: June 2016

AbstractThe use of microwave irradiation is found to significantly improve the reaction yield and shorten the reaction time.
ChemInform Abstract: Synthesis of a Luminescent Azaphosphole.
Authors: Wu Shanshan , Rheingold Arnold L. , Golen James A. , Grimm Alexandra B. , Protasiewicz John D. 
Published: June 2016

AbstractA carbazole‐based azaphosphole (VI) is prepared by acid‐catalyzed dehydrocyclization of 1‐phosphino‐9H‐carbazole (IV) with toluyl chloride (V).
ChemInform Abstract: An Efficient, Three‐Component Synthesis of Isoindolin‐1‐one‐3‐phosphonates under Mild and Solvent‐Free Conditions.
Authors: Adib Mehdi , Sheikhi Ehsan , Yazzaf Rozita , Bijanzadeh Hamid Reza , Mirzaei Peiman 
Published: June 2016

AbstractA facile protocol allows the synthesis of the title phosphonates from 2‐formylbenzoic acid, amines, and trialkylphosphite at room temperature under catalyst‐ and solvent‐free conditions.
ChemInform Abstract: Microwave‐Assisted Direct Esterification of Cyclic Phosphinic Acids in the Presence of Ionic Liquids.
Authors: Kiss Nora Zsuzsa , Keglevich Gyoergy 
Published: June 2016

AbstractThe efficiency of the microwave‐assisted direct esterification of cyclic phosphinic acids, e.g. (I), (IV), and (VI), is significantly enhanced by adding 10% of an ionic liquid to the reaction mixture prior to irradiation.
ChemInform Abstract: Dihydro‐β‐agarofuran Sesquiterpenes from Celastraceae Species as Antitumor‐Promoting Agents: Structure—Activity Relationship.
Authors: Nunez Marvin J. , Jimenez Ignacio A. , Mendoza Cristina R. , Chavez‐Sifontes Marvin , Martinez Morena L. , Ichiishi Eiichiro , Tokuda Ryo , Tokuda Harukuni , Bazzocchi Isabel L. 
Published: June 2016

AbstractFive dihydro‐β‐agarofuran sesquiterpenes, chiapene A (Ia), chiapene B (Ib), chiapene C (II), chiapene D (III), and chiapene E (IV) are isolated from Maytenus chiapensis and tested for their inhibitory effects on Epstein—Barr virus early antigen activation.
ChemInform Abstract: Structure Revision of Caesalpinistas A and B and Isolation of a New Furanoditerpenoid from the Cotyledons of Caesalpinia decapetala var. japonica.
Authors: Kamikawa Sayuri , Ohta Emi , Nehira Tatsuo , Omura Hisashi , Ohta Shinji 
Published: June 2016

AbstractThe new diterpenoid, deoxycaesaljaponin A (I) is isolated along with the known caesalpinista B.
ChemInform Abstract: Synthesis of Azacyclic Nucleoside Analogues via Asymmetric [3 + 2] Cycloaddition of 9‐(2‐Tosylvinyl)‐9H‐purines.
Authors: Zhang Dan‐Jie , Xie Ming‐Sheng , Qu Gui‐Rong , Gao Yao‐Wei , Guo Hai‐Ming 
Published: June 2016

AbstractAn efficient catalytic system of Cu(MeCN)4ClO4 and a chiral ferrocene ligand is applied for the asymmetric [3 + 2] cycloaddition of 9‐(2‐tosylvinyl)‐9H‐purines with azomethine ylides (II).
ChemInform Abstract: Talaroketals A and B, Unusual Bis(oxaphenalenone) Spiro and Fused Ketals from the Soil Fungus Talaromyces stipitatus ATCC 10500.
Authors: Zang Yi , Genta‐Jouve Gregory , Retailleau Pascal , Escargueil Alexandre , Mann Stephane , Nay Bastien , Prado Soizic 
Published: June 2016

AbstractTalaroketals A (I) and B (II) are isolated from the soil fungus.
ChemInform Abstract: Surface Control of a Photoresponsive Self‐Assembled Monolayer and Selective Deposition of Ag Nanoparticulate Ink
Authors: Konishi Tsubasa , Yamaguchi Kazuo 
Published: June 2016

AbstractA highly hydrophobic self‐assembled monolayer (SAM) with high photosensitivity to soft UV (λ = 365 nm) is formed on thermally surface‐oxidized silicon wafers by a silane coupling agent bearing a 2‐nitrobenzyl carbamate moiety.
ChemInform Abstract: Silicon Carbide Foam as a Porous Support Platform for Catalytic Applications
Authors: Duong‐Viet Cuong , Ba Housseinou , El‐Berrichi Zora , Nhut Jean‐Mario , Ledoux Marc J. , Liu Yuefeng , Pham‐Huu Cuong 
Published: June 2016

AbstractReview: 121 refs.
ChemInform Abstract: Application of Corey—Bakshi—Shibata, Corey—Kim, Corey—Seebach, Corey—Winter, Corey—Link, and Corey—Ganem—Gilman in Organic and Total Synthesis.
Authors: Heravi Majid M. , Asadi Shima , Nazari Niousha , Lashkariani Boshra Malekzadeh 
Published: June 2016

AbstractReview: 117 refs.
ChemInform Abstract: A Review of Harvesting Clean Fuels from Enzymatic CO2 Reduction
Authors: Sultana Sabiha , Sahoo Prakash Chandra , Martha Satyabadi , Parida Kulamani 
Published: June 2016

AbstractReview: summary on single enzyme, multi enzymatic and semiconducting nanomaterial integrated enzymatic systems for CO2 conversion to clean fuels; 134 refs.
THE ELECTRON DENSITY PROFILE INVERSION FOR INCOMPLETELY DEVELOPED CASE OF F1 LAYER
Authors: Na WEI , Wen LIU , Zhuan‐Xia LU , Jing FENG , Long‐Quan YANG , Wen‐Ling GUO 
Published: June 2016

AbstractThe electron density profile inversion from vertical incidence ionograms is essential for research in ionospheric structures and movements, wave propagation and space weather applications, hence has gathered very wide attention. The echo trace of incompletely developed F1 layer is common in vertical incidence ionograms, and it is usually expressed as smooth transition from F1 layer to F2 layer, not a cusp appeared at the critical frequency of F1 layer. However, the existing ionospheric models and inversion algorithms are generally intended for the completely developed F1 layer with the assumptions of a parabolic profile and an infinite slope at the peak of F1 layer, which are not suitable for the profile of incompletely developed F1 layer which achieves the maximum electron density of F1 layer and enters F2 layer at the peak of F1 layer and has a finite slope. Consequently, an F1 layer electron density profile model based on the shifted Chebyshev polynomial for incompletely developed case of F1 layer is introduced with a parameter named as the model setting critical frequency. Taking into account the profile smoothness, an electron density profile inversion algorithm with constrained optimization F1 and F2 layer parameters based on the model mentioned above is proposed. The validity of the model and the inversion algorithm is analyzed through the simulation, and the effectivity of the proposed algorithm is further verified by the comparison between the synthesized vertical sounding & oblique sounding traces and the measured data.
ANALYSIS OF NORMALIZED TIME‐FREQUENCY RESPONSE SPECTRA FOR THREE SEISMIC RECORDS
Authors: Zhi‐Gang QIU , Qi‐Feng LUO 
Published: June 2016

AbstractTime‐Frequency Response Spectrum (TFRS) is a three‐dimensional spectrum, which includes three main characteristics of ground motion: amplitude, frequency characteristic and duration. Based on it, Normalized Time‐Frequency Response Spectrum (NTFRS) was proposed and the NTFRS of three typical seismic waves were calculated. The comparison of three NTFRS shows that spectra amplitudes distributed along period axis and duration axis are different from each other; the large difference may cause different effect on the structures. One 12‐storey reinforced concrete frame structure was analyzed by using elastic‐plastic time‐history analysis method. The comparison of the seismic response, structural damage curve and NTFRS of input ground motion shows that the maximum seismic response of structure might not be the cause of its collapse. It implies that the traditional response spectrum theory has limitation because in the theory the maximum elastic response of structures is used to make seismic design. It could be concluded that the Normalized Time‐Frequency Response Spectrum is better for analyzing the characteristics of ground motions and the structural failure mechanism in the earthquakes.
SYNTHETIC APERTURE IMAGING IN ADVANCED DETECTION OF ROADWAY USING MINE TRANSIENT ELECTROMAGNETIC METHOD
Authors: Jiu‐Long CHENG , Ding CHEN , Guo‐Qiang XUE , Hao QIU , Xiang‐Tong ZHOU 
Published: June 2016

AbstractDuring the data processing and interpretation of mine transient electromagnetic method (MTEM), in order to improve the identification of the geo‐electrical interface between low resistivity abnormal body and surrounding rock in advanced detection, transient electromagnetic field was transformed to pseudo‐seismic wave‐field based on the function relationship between spreading electromagnetic field and seismic wave‐field in whole‐space. Meanwhile, the signal of pseudo‐seismic after being transformed was processed with correlative stack to strengthen the amplitude and improve signal‐noise‐ratio (SNR) using the synthetic aperture imaging (SAI). The data of different detection directions on one surveying point in MTEM were imaged as aperture data, which would highlight weak abnormality and improve SNR. In addition, the application effect of SAI was testified with the in‐site advanced detection in roadway using MTEM. The results showed that the SAI of the MTEM could improve SNR of the electrical interface information and highlight the geometrical resolution to increase exploration accuracy. The technique is significant theoretically and practically in accurate advanced detection of aquifer structure by MTEM.
USING OBS TELESEISMIC RECEIVER FUNCTIONS TO INVERT THE LITHOSPHERIC STRUCTURE—A CASE STUDY OF THE SOUTHWESTERN SUBBASIN IN THE SOUTH CHINA SEA
Authors: Hao HU , Ai‐Guo RUAN , Qin‐Yu YOU , Jia‐Biao LI , Tian‐Yao HAO , Jiang‐Ping LONG 
Published: June 2016

AbstractDue to the particular seafloor environment and the special outer mechanical structure of the ocean bottom seismometer (OBS), there are some problems that have not been solved in the lithospheric structure inversion using the OBS teleseismic receiver functions. Based on the analysis of these problems, we combined the Fourier transform and wavelet analysis to suppress the non‐stationary noise to obtain a better signal‐to‐noise ratio and clearer seismic phases recorded by the OBSs at the southwestern subbasin in the South China Sea (SCS). The equipment is a broadband OBS of I‐4C type produced by the Institute of Geology and Geophysics, Chinese Academy of Sciences. We then inverted the lithospheric structure by successfully applying the receiver functions to the teleseismic data recorded at the southwestern subbasin in the SCS. The results show that it is feasible to use the receiver functions for the inversion of the lithosphere structure based on the passive observation data collected via the OBS, in which the key is to suppress the non‐stationary noise. The Moho depth at the southwestern subbasin in the SCS is 10∼12 km, with a crust thickness of 6∼8 km. The shallow crust is a low velocity layer with sediment thickness 1∼2 km, which consists of sediment and volcanic clastic breccia produced by the magma eruption after the spreading cessation. In the spreading axis center, a low S‐wave velocity zone exists at the depths of 6 km to 12 km above the Moho. We interpreted this zone as the result of partial melting of the lower crust or the presence of a magma chamber. In the same area at the depths of 17 km to 30 km, the vertical S‐wave velocity gradient is negative. We interpreted it as the result of the hot magma supply moving upward in the mantle.
Correction of second‐order‐diffraction errors in spectrophotometry
Authors: Xu Zhiling , Brill Michael H. 
Published: June 2016

AbstractConventional diffraction gratings are designed so that most of the light striking the grating is diffracted toward the “first‐order beam” direction, but in practice, some of the light may be diffracted towards the “second‐order beam” direction, so that the light striking a particular sensor pixel may be a combination of both first‐ and second‐order components. This causes errors in the output of diffraction‐grating based UV–visible spectrometers. A new method has been developed to correct such errors by calibrating the optical system with a UV‐excluded standard (such as an orange tile) and a UV‐included standard (such as a white tile). These two calibrations can predict the relationship between first‐order‐only signals and first‐and‐second‐order combined signals at sensor pixels (nominal wavelengths) where there is second‐order light, and thus help correct the second‐order diffraction error. This compensation method applied on the reflectance measurement of a set of color ceramic tiles showed significant improvement on the accuracy of the result. © 2016 Wiley Periodicals, Inc. Col Res Appl, 42, 189–192, 2017
Enhancing NMR Sensitivity of Natural‐Abundance Low‐γ Nuclei by Ultrafast Magic‐Angle‐Spinning Solid‐State NMR Spectroscopy
Authors: Zhang Rongchun , Chen Yitian , Rodriguez‐Hornedo Nair , Ramamoorthy Ayyalusamy 
Published: June 2016

AbstractAlthough magic‐angle‐spinning (MAS) solid‐state NMR spectroscopy has been able to provide piercing atomic‐level insights into the structure and dynamics of various solids, the poor sensitivity has limited its widespread application, especially when the sample amount is limited. Herein, we demonstrate the feasibility of acquiring high S/N ratio natural‐abundance 13C NMR spectrum of a small amount of sample (≈2.0 mg) by using multiple‐contact cross polarization (MCP) under ultrafast MAS. As shown by our data from pharmaceutical compounds, the signal enhancement achieved depends on the number of CP contacts employed within a single scan, which depends on the T1ρ of protons. The use of MCP for fast 2D 1H/13C heteronuclear correlation experiments is also demonstrated. The significant signal enhancement can be greatly beneficial for the atomic‐resolution characterization of many types of crystalline solids including polymorphic drugs and nanomaterials.
Large‐scale production of well‐dispersed submicro ZrB2 and ZrC powders
Authors: Bai Liuyang , Wang Yongwei , Chen Huayi , Yuan Fangli 
Published: June 2016

ZrB2 and ZrC powders were synthesized via metallothermic reduction route using ZrO2, B/C, and Mg as raw materials. Low packing density of the green mixture and high heating temperature of the furnace are crucial for the formation of well‐dispersed submicro powders. Optimum reaction time helped achieve good crystallization and high purity. The as‐prepared samples were characterized by XRD, FESEM, TEM, and particle size analyzer. Results showed that well‐dispersed ZrB2 powders with mean particle size of 0.534 μm and ZrC powders with mean particle size of 0.376 μm can be obtained. Oxygen content can be controlled lower than 1.0 wt%. The bench‐scale output is about 10 kg/d.
Conservation hotspots for marine turtle nesting in the United States based on coastal development
Authors: Fuentes Mariana M. P. B. , Gredzens Christian , Bateman Brooke L. , Boettcher Ruth , Ceriani Simona A. , Godfrey Matthew H. , Helmers David , Ingram Dianne K. , Kamrowski Ruth L. , Pate Michelle , Pressey Robert L. , Radeloff Volker C. 
Published: June 2016

AbstractCoastal areas provide nesting habitat for marine turtles that is critical for the persistence of their populations. However, many coastal areas are highly affected by coastal development, which affects the reproductive success of marine turtles. Knowing the extent to which nesting areas are exposed to these threats is essential to guide management initiatives. This information is particularly important for coastal areas with both high nesting density and dense human development, a combination that is common in the United States. We assessed the extent to which nesting areas of the loggerhead (Caretta caretta), the green (Chelonia mydas), the Kemp's ridley (Lepidochelys kempii), and leatherback turtles (Dermochelys coriacea) in the continental United States are exposed to coastal development and identified conservation hotspots that currently have high reproductive importance and either face high exposure to coastal development (needing intervention), or have low exposure to coastal development, and are good candidates for continued and future protection. Night‐time light, housing, and population density were used as proxies for coastal development and human disturbance. About 81.6% of nesting areas were exposed to housing and human population, and 97.8% were exposed to light pollution. Further, most (>65%) of the very high‐ and high‐density nesting areas for each species/subpopulation, except for the Kemp's ridley, were exposed to coastal development. Forty‐nine nesting sites were selected as conservation hotspots; of those high‐density nesting sites, 49% were sites with no/low exposure to coastal development and the other 51% were exposed to high‐density coastal development. Conservation strategies need to account for ~66.8% of all marine turtle nesting areas being on private land and for nesting sites being exposed to large numbers of seasonal residents.
Adult nutrition, but not inbreeding, affects male primary sexual traits in the leaf‐footed cactus bug Narnia femorata (Hemiptera: Coreidae)
Authors: Joseph Paul N. , Sasson Daniel A. , Allen Pablo E. , Somjee Ummat , Miller Christine W. 
Published: June 2016

AbstractAdverse conditions may be the norm rather than the exception in natural populations. Many populations experience poor nutrition on a seasonal basis. Further, brief interludes of inbreeding can be common as population density fluctuates and because of habitat fragmentation. Here, we investigated the effects of poor nutrition and inbreeding on traits that can be very important to reproductive success and fitness in males: testes mass, sperm concentration, and sperm viability. Our study species was Narnia femorata, a species introduced to north‐central Florida in the 1950s. This species encounters regular, seasonal changes in diet that can have profound phenotypic effects on morphology and behavior. We generated inbred and outbred individuals through a single generation of full‐sibling mating or outcrossing, respectively. All juveniles were provided a natural, high‐quality diet of Opuntia humifusa cactus cladode with fruit until they reached adulthood. New adult males were put on a high‐ or low‐quality diet for at least 21 days before measurements were taken. As expected, the low‐quality diet led to significantly decreased testes mass in both inbred and outbred males, although there were surprisingly no detectable effects on sperm traits. We did not find evidence that inbreeding affected testes mass, sperm concentration, and sperm viability. Our results highlight the immediate and overwhelming effects of nutrition on testes mass, while suggesting that a single generation of inbreeding might not be detrimental for primary sexual traits in this particular population.
Assessment of a judgment‐based hydrogeomorphic wetland classification using long‐term hydrologic data
Authors: Cole C. A. 
Published: June 2016

AbstractHydrogeomorphic (HGM) wetland classifications are becoming increasingly common but lack substantial review of assumptions behind those classifications. In this paper, I compare an HGM classification of wetland sites developed by best professional judgment with a classification developed using long‐term hydrologic data over those same sites. Forty‐two wetlands, covering five HGM subclasses, were sampled for over a decade in central Pennsylvania. Using median depth to water as the metric, four groups were identified through cluster analysis (created, riparian depression/slope, and two combinations of headwater/mainstem floodplains). The groundwater‐fed sites (riparian depressions and toe‐of‐slopes) were clearly separated by their more consistent source of water, whereas other slopes and floodplain sites were less clearly defined. Long‐term assessment of hydrology generally supported an HGM classification scheme developed under less stringent conditions and produced by best professional judgment, but improvements in the assessment of drier sites are needed.
Millisecond Coulometry via Zeptoliter Droplet Collisions on an Ultramicroelectrode
Authors: Dick Jeffrey E. , Lebègue Estelle , Strawsine Lauren M. , Bard Allen J. 
Published: June 2016

AbstractWe show that discrete collisions of zeptoliter emulsion droplets on an ultramicroelectrode (UME) can be used as individual controlled potential coulometry experiments, lasting between 100 and 500 milliseconds. By loading a highly hydrophobic toluene droplet with a hydrophobic analyte of interest and knowing the volume of the droplet to a high degree of precision, Faraday's Law can be employed to calculate the number of electrons passed during the electrolysis. Monodisperse (±15 % of the average size) emulsion systems were created by ultrasonication followed by filtering through a 200 nm porous filter. Discrete droplet collision events were observed in the amperometric i‐t curve. Each of these collisions are interpreted as individual coulometry experiments, implying that several bulk electrolyses can be carried out over the course of one collision experiment. Herein, we show calculations of the electron stoichiometry for the ferrocene oxidation reaction, which agrees well with the expected value of 1 electron. We further extend the methodology to more complicated systems, such as the oxidation of tetrathiafulvalene (TTF), tertiary aliphatic amines, such as tripropylamine (TPrA), and a 1,2‐diphenylhydrazine (DPH) molecule. This electroanalytical methodology allows for fast, nanoscale electrolysis in low dielectric media.
(1‐Butyl‐3‐methylimidazolium Hexafluorophosphate) Based Sensor for Quantification of Eugenol Antioxidant
Authors: Verma Alka , Jain Rajeev 
Published: June 2016

AbstractA simple, ultrasensitive and convenient electrochemical method has been developed for quantification of antioxidant eugenol, at multi‐walled carbon nanotube (MWCNT) ionic liquid (1‐Butyl 3‐methylimidazolium hexafluorophosphate) glassy carbon based sensor. The electrochemical behavior of eugenol at the sensor was studied using square wave voltammetry as a function of concentration of eugenol. The voltammetric studies of eugenol at MWCNT‐IL‐Gel/GC sensor exhibited a well defined anodic peak for its oxidation in Britton‐Robinson buffer at pH 10.5.Under optimized experimental condition the square wave oxidation peak current was linear over concentration range of 250 nM L−1 to 4000 nM L−1 with limit of detection (LOD) and limit of quantification of 87.6 nM L−1 and 292.2 nM L−1 respectively. The results indicate that the electrode coated with MWCNT‐IL‐Gel possess high sensitivity towards eugenol. Developed MWCNT‐IL‐Gel/GC sensor was successfully employed for the analysis of eugenol in real samples.
The UNCITRAL Model Law on Cross‐border Insolvency and the Rule of Law
Authors: Deane Felicity , Mason Rosalind 
Published: June 2016

AbstractThe rule of law is a concept that was often considered in the context of national legal systems. However, it is now commonly being promoted as significant in the transnational context. This paper addresses its importance within the transnational economic and commercial context, in particular in response to cross‐border insolvencies. It examines how the UNCITRAL Model Law on Cross‐border Insolvency and its Guide to Enactment and Interpretation promote key tenets of the rule of law in transnational disputes arising out of businesses in financial distress. In particular, some examples are provided of cases from the Asia‐Pacific region in which the Model Law has been applied to demonstrate how the rule of law may be promoted in an insolvency context. Finally, the paper concludes that the adoption of the UNCITRAL Model Law on Cross‐border Insolvency promotes transparency, accountability and predictability, which in turn support stability in financial systems and credit relationships and thus trade within a global market. This is a direct result of adherence to elements of the rule of law principle. Copyright © 2016 INSOL International and John Wiley & Sons, Ltd. Copyright © 2016 INSOL International and John Wiley & Sons, Ltd