bluuebunny/crossref_metadata_2025_split huggingface dataset:
ChemInform Abstract: Carbon Dioxide/Epoxide Reactions Catalyzed by Bimetallic Salalen Aluminum Complexes.
Authors: Cozzolino Mariachiara , Press Konstantin , Mazzeo Mina , Lamberti Marina 
Published: May 2016

AbstractThe salen complex catalyst (SAA) in combination with Bu4NBr as co‐catalyst shows high catalytic activity in reactions of epoxides (I) and (IV) with carbon dioxide to give the corresponding carbonates.
ChemInform Abstract: Selective Metalation of 1,3‐Dithiole‐2‐thiones: An Effective Preparation of New Symmetrically and Nonsymmetrically Tetraarylated Tetrathiafulvalens.
Authors: Nafe Julia , Knochel Paul 
Published: May 2016

AbstractMono‐ and difunctionalized 1,3‐dithiol‐2‐thiones are prepared which may contain various substituents, including halogens, aryloyl, alkenyl, and aryl groups.
ChemInform Abstract: Efficient and Flexible Synthesis of Highly Functionalized 4‐Aminooxazoles by a Gold‐Catalyzed Intermolecular Formal [3 + 2] Dipolar Cycloaddition.
Authors: Gillie Andrew D. , Jannapu Reddy Raju , Davies Paul W. 
Published: May 2016

AbstractN‐Acylpyridinium‐N‐ylides, prepared from iodide (II) and carboxylic acids, esters, chlorides or isocyanates undergo formal [3 + 2] dipolar cycloaddition with ynamides to produce highly functionalized 4‐aminooxazoles.
ChemInform Abstract: One Pot Regioselective Synthesis and Antimicrobial Studies of Some Novel Indazolyl—Thiazole Derivatives.
Authors: Gautam Poonam , Gautam Deepika , Chaudhary R. P. 
Published: May 2016

AbstractThe title thiazoles are prepared in two steps starting with the condensation of benzylidenetetralones with thiosemicarbazide followed by grinding with phenacyl bromides.
ChemInform Abstract: N‐Heterocyclic Carbene Catalyzed Dynamic Kinetic Resolution of Pyranones.
Authors: Zhao Changgui , Li Fangyi , Wang Jian 
Published: May 2016

AbstractThe dynamic kinetic resolution of hydroxypyranones with enals or alkynals through an asymmetric redox esterification is catalyzed by a new indanol‐derived triazolium catalyst to furnish esters in good to high yields with high levels of enantio‐ and diastereocontrol.
ChemInform Abstract: Copper‐Catalyzed Tandem Amide N‐Arylation and Regioselective Cyclization of 2‐Alkynylbenzamides
Authors: Minami Hideki , Sueda Takuya , Okamoto Noriko , Miwa Yoshihisa , Ishikura Minoru , Yanada Reiko 
Published: May 2016

Abstractaffording a series of iminoisocoumarins
ChemInform Abstract: Synthesis of 4‐Aryl‐2‐quinolones via Copper‐Catalyzed Hydroarylation of (o‐Aminophenyl)propiolates with Arylboronates.
Authors: Murayama Tsukasa , Shibuya Masatoshi , Yamamoto Yoshihiko 
Published: May 2016

AbstractA one‐pot protocol is developed for the hydroarylation/deprotection/cyclization sequence of substrates (I) to give N‐benzyl protected quinolones.
ChemInform Abstract: Palladium(II)‐Catalyzed Sequential Aminopalladation and Oxidative Coupling with Acetylenes/Enones: Synthesis of Newly Substituted Quinolines from 2‐Aminophenyl Propargyl Alcohols.
Authors: Thirupathi Nuligonda , Puri Surendra , Reddy Thota Jagadeshwar , Sridhar Balasubramanian , Reddy Maddi Sridhar 
Published: May 2016

AbstractThe title reaction proceeds under mild conditions and tolerates a wide range of functional groups in both partners.
ChemInform Abstract: Asymmetric Diels—Alder and Cascade Reaction of Quinone Imine Ketals and 2,4‐Dienals: Construction of Chiral Benzo[de]quinolone Derivatives.
Authors: Gu Jing , Xiao Ben‐Xian , Chen Yu‐Rong , Du Wei , Chen Ying‐Chun 
Published: May 2016

AbstractQuinone imine ketals and 2,4‐dienals undergo asymmetric Diels—Alder reaction followed by aromatization and cyclization to give hemiaminal products such as (VIII) which are subsequently reduced by Et3SiH to give more stable compounds.
ChemInform Abstract: Copper(I)‐Catalyzed Synthesis of Chlorinated Tetrahydropyridazin‐3‐ones and 1,2‐Diazepan‐3‐ones from N‐Allyl‐N′‐trichloroacetylhydrazines
Authors: Ram Ram N. , Soni Vineet Kumar 
Published: May 2016

Abstractvia atom transfer radical cyclization
ChemInform Abstract: Palladium‐Catalyzed Decarboxylative Selective Acylation of 4H‐Benzo[d][1,3]oxazin‐4‐one Derivatives with α‐Oxo Carboxylic Acids via Preferential Cyclic Imine‐N‐Directed Aryl C—H Activation.
Authors: Majhi Biju , Kundu Debasish , Ghosh Tubai , Ranu Brindaban C. 
Published: May 2016

AbstractThe title reaction allows the regioselective mono‐acylation of benzoxazinones.
ChemInform Abstract: Synthesis of Bis‐1,2,4‐triazines via Telescoped Condensation of [1,10]‐Phenanthroline‐2,9‐dicarbonitrile with Aromatic 1,2‐Dicarbonyls.
Authors: Tai Serene , Williams Neil J. , Carrick Jesse D. 
Published: May 2016

AbstractFour novel bistriazines are prepared via condensation in two steps.
ChemInform Abstract: Synthesis of Novel 3‐(3‐(5‐Methylisoxazol‐3‐yl)‐7H‐[1,2,4]triazolo[3,4‐b] [1,3,4]thiadiazin‐6‐yl)‐2H‐chromen‐2‐ones.
Authors: Vaarla Krishnaiah , Vedula Rajeswar Rao 
Published: May 2016

AbstractThe title compounds are efficiently prepared in two steps by fusion of isoxazolecarboxylic acid and thiocarbohydrazide followed by cyclocondensation of resulting the triazole (III) with various coumarins.
ChemInform Abstract: Fine‐Tuning the Balance Between Peptide Thioester Cyclization and Racemization.
Authors: Popovic Stanimir , Wijsman Linda , Landman Iris R. , Sangster Maaike F. , Pastoors Dorien , Veldhorst Berend B. , Hiemstra Henk , van Maarseveen Jan H. 
Published: May 2016

AbstractSeven‐membered bislactams containing an α‐amino acid and a β‐alanine are synthesized by intramolecular cyclization of linear peptide thioesters.
ChemInform Abstract: Regioselective and Stereoselective Synthesis of Pyridine‐Fused Benzoxepine Derivatives by Intramolecular Reductive Heck Cyclization.
Authors: Mondal Shovan , Debnath Sudarshan 
Published: May 2016

AbstractHighly functionalized benzoxepines are prepared under mild reaction conditions via chemoselective Sonogashira coupling followed by Heck reaction of the resulting cyclization precursors.
ChemInform Abstract: Protonated Trititanate Nanotubes: An Efficient Catalyst for One‐Pot Three‐Component Coupling of Benzothiazole Amines, Heterocyclic Aldehydes, and Dialkyl/Diaryl Phosphites with a Greener Perspective.
Authors: Reddy Bhoomireddy Rajendra Prasad , Reddy Motakatla Venkata Krishna , Reddy Peddiahgari Vasu Govardhana , Kumar Dharani Praveen , Shankar Muthukonda V. 
Published: May 2016

AbstractThe title process is advantageous with regards to operational simplicity and allows the synthesis of novel α‐aminophosphonates in short reaction times.
ChemInform Abstract: Mollisolactones A and B, Novel Dinormonoterpenes from the Soft Coral Sinularia mollis.
Authors: Cheng Shi‐Yie , Wang Shang‐Kwei , Ou Yih‐Hsin , Duh Chang‐Yih 
Published: May 2016

AbstractTwo novel dinormonoterpenes, mollisolactones A (I) and B (II) are isolated.
ChemInform Abstract: Flaviphenalenones A—C, Three New Phenalenone Derivatives from the Fungus Aspergillus flavipes PJ03‐11.
Authors: Pei Yue‐Hu , et al.  
Published: May 2016

AbstractFlaviphenalenones A‐C (I)‐(III) are isolated together with 10 known compounds from solid cultures of the title fungus.
ChemInform Abstract: Periconiasin G, a New Cytochalasan with Unprecedented 7/6/5 Tricyclic Ring System from the Endophytic Fungus Periconia sp.
Authors: Zhang Dewu , Tao Xiaoyu , Liu Jimei , Chen Ridao , Zhang Min , Li Li , Fang Xiaomei , Yu Li‐Yan , Dai Jungui 
Published: May 2016

AbstractNew cytochalasans, periconiasin G (I) and periconiasin H (II) are isolated from Periconia sp.
ChemInform Abstract: Preparation of Hexagonal BN Whiskers Synthesized at Low Temperature and Their Application in Fabricating an Electrochemical Nitrite Sensor.
Authors: Luo Wenpo , Yang Tao , Su Lei , Chou Kuo‐Chih , Hou Xinmei 
Published: May 2016

AbstractHexagonal BN whiskers are prepared via a polymeric precursor made from a 3:1 molar solution of H3BO3 and melamine (1.
A Turn‐On Fluorescent Probe for Highly Selective and Sensitive Detection of Palladium
Authors: Zhou Junliang , Zhang Jian , Ren Hang , Dong Xiaochun , Zheng Xing , Zhao Weili 
Published: May 2016

AbstractA novel turn‐on fluorescent probe for the detection of palladium has been designed. The probe can selectively and sensitively detect palladium in solution, and the limit of detection was calculated to be 11.4 nmol·L−1. Furthermore, the probe was successfully used for fluorescence imaging of palladium in living cells.
Extraction of Rutin and Rhoifolin by Inorganic Borate Functionalized Magnetic Particles
Authors: Huang Yu , Qi Aidi , Han Bao‐Hang 
Published: May 2016

AbstractWe demonstrate a facile approach for smart time‐saving extraction of active components of rutin and rhoifolin by a new kind of magnetic particles (MPs). The inorganic borate functionalized magnetic particles are quasi‐spherical with an average diameter of 200–220 nm. The MPs were characterized by scanning electron microscopy and X‐ray diffraction techniques. The inorganic boron content in MPs was confirmed by electron‐dispersive X‐ray spectroscopy. The extraction and release efficiency of MPs were investigated. The smart borate‐decorated magnetic particles show a specific extraction towards the active components containing cis‐1,2 diol moieties. Rutin and rhoifolin were extracted at 16.55 and 22.49 mg/g, respectively. The recycling test shows that MPs can be reused and maintain a significant efficiency for seven cycles. Hence, a novel structured and reusable magnetic nanomaterial for extracting rutin and rhoifolin was developed. This strategy of specific extraction will be an important method to obtain the active components with some structure features through designing various structured particles.
Undulated 2D Covalent Organic Frameworks Based on Bowl‐Shaped Cyclotricatechylene
Authors: Zhen Jingru , Ding Sanyuan , Wang Wei , Liu Junmin , Sun Junliang , Huang Zhitang , Zheng Qiyu 
Published: May 2016

AbstractTwo 2D wavy hexagonal hexahydroxyl cyclotricatechylene (CTC) based COFs, CTC‐COF‐2 and CTC‐COF‐3 were synthesized through solvothermal reaction. The bowl‐shaped conformation caused CTC skeletons packed in a columnar manner with the same oriented units, thus forming an undulated structure. The gas adsorption properties of CTC‐COFs were investigated, which show the potential application abilities in hydrogen storage of CTC‐COFs. The introduction of pyrene into CTC‐COF‐3 makes it a potential semiconducting π‐conjugated material.
On the complexities of utilizing large‐scale lightpath‐connected distributed cyberinfrastructure
Authors: Maassen Jason , van Werkhoven Ben , van Meersbergen Maarten , Bal Henri E. , Kliphuis Michael , Brunnabend Sandra E. , Dijkstra Henk A. , van Malenstein Gerben , de Vos Migiel , Kuijpers Sylvia , Boele Sander , Wolfrat Jules , Hill Nick , Wallom David , Grimm Christian , Kranzlmüller Dieter , Ganpathi Dinesh , Jha Shantenu , Khamra Yaakoub El , Bryan Frank O. , Kirtman Benjamin , Seinstra Frank J. 
Published: May 2016

SummaryIn Autumn 2013, we—an international team of climate scientists, computer scientists, eScience researchers, and e‐Infrastructure specialists—participated in the enlighten your research global competition, organized to showcase advanced lightpath technologies in support of state‐of‐the‐art research questions. As one of the winning entries, our enlighten your research global team embarked on a very ambitious project to run an extremely high resolution climate model on a collection of supercomputers distributed over two continents and connected using an advanced 10 G lightpath networking infrastructure. Although good progress was made, we were not able to perform all desired experiments due to a varying combination of technical problems, configuration issues, policy limitations and lack of (budget for) human resources to solve these issues. In this paper, we describe our goals, the technical and non‐technical barriers, we encountered and provide recommendations on how these barriers can be removed so future project of this kind may succeed. Copyright © 2016 John Wiley & Sons, Ltd.
A half‐bridge resonant DC/DC converter with satisfactory soft‐switching characteristics
Authors: Guan Yueshi , Wang Yijie , Xu Dianguo , Wang Wei 
Published: May 2016

SummaryIn this paper, a half‐bridge resonant DC/DC converter with constant output voltage is proposed, which possesses good soft‐switching characteristics. At rated operating point, the switches can operate almost without switching‐on and off losses. Further, at whole working range, both zero‐voltage‐switching mode of switches and zero‐current‐switching mode of diodes are maintained. Thus, the converter can achieve a high efficiency. Experimental results verify the low switching losses and high efficiency characteristics based on a 200 W prototype. System efficiency is as high as 96% and always above 90% when output power changes from 100% to 20%. Copyright © 2016 John Wiley & Sons, Ltd.
An integrated controller for high‐frequency LCLC resonant inverter with phase‐shifted control and frequency regulation
Authors: Liu Junfeng , Zeng Jun 
Published: May 2016

SummaryHigh‐frequency alternating current has an extensive application as a result of outstanding advantages. The aim of the study is to develop a high‐frequency power source to feed the auxiliary loads of vehicle application such as electric fans, blower motors, and lighting. A feasible implementation of high‐frequency power source is examined by a full‐bridge LCLC resonant inverter. The corresponding control scheme is proposed for the fourth‐order resonant inverter to confront the control challenges of low output harmonics and dynamic nonlinear load. Firstly, an analysis parameter Sr is defined to address the possible impacts of the varying operational frequency to output THD and ZVS features. Secondly, an integrated control scheme is presented to implement pulse‐width control at heavy load and frequency regulation at light load. Lastly, an experimental prototype is accomplished with the peak voltage of 35 V and the output power of 120 W. The accordance of experimental results and theoretical analysis testifies that the proposed control scheme can achieve the low harmonics and high conversion efficiency over a wide scope of operational conditions. Copyright © 2016 John Wiley & Sons, Ltd.
Generation of an inducible fibroblast cell line for studying direct cardiac reprogramming
Authors: Vaseghi Haley Ruth , Yin Chaoying , Zhou Yang , Wang Li , Liu Jiandong , Qian Li 
Published: May 2016

SummaryDirect reprogramming of fibroblasts into induced cardiomyocytes (iCMs) through forced expression of cardiac‐lineage specific transcription factors holds promise as an alternative strategy for cardiac regeneration. To facilitate research in iCM reprogramming, we generated a suite of new tools. We developed a transformed cell line derived from mouse embryonic fibroblasts (MEF). This fibroblast cell line (MEF‐T) harbors an αMHC‐eGFP reporter transgene for rapid detection of newly derived iCMs. The MEF‐T cell line is highly proliferative and easily transfected and transduced, making it an ideal tool for transgene expression and genetic manipulation. Additionally, we generated a Tet‐On inducible polycistronic iCM reprogramming construct for the temporal regulation of reprogramming factor expression. Furthermore, we introduced this construct into MEF‐T and created an inducible reprogrammable fibroblast cell line. These tools will facilitate future research in cell fate reprogramming by enabling the temporal control of reprogramming factor expression as well as high‐throughput screening using libraries of small molecules, noncoding RNAs, and siRNAs. genesis 54:398–406, 2016. © 2016 Wiley Periodicals, Inc.
Drivers of aboveground wood production in a lowland tropical forest of West Africa: teasing apart the roles of tree density, tree diversity, soil phosphorus, and historical logging
Authors: Jucker Tommaso , Sanchez Aida Cuni , Lindsell Jeremy A. , Allen Harriet D. , Amable Gabriel S. , Coomes David A. 
Published: May 2016

AbstractTropical forests currently play a key role in regulating the terrestrial carbon cycle and abating climate change by storing carbon in wood. However, there remains considerable uncertainty as to whether tropical forests will continue to act as carbon sinks in the face of increased pressure from expanding human activities. Consequently, understanding what drives productivity in tropical forests is critical. We used permanent forest plot data from the Gola Rainforest National Park (Sierra Leone) – one of the largest tracts of intact tropical moist forest in West Africa – to explore how (1) stand basal area and tree diversity, (2) past disturbance associated with past logging, and (3) underlying soil nutrient gradients interact to determine rates of aboveground wood production (AWP). We started by statistically modeling the diameter growth of individual trees and used these models to estimate AWP for 142 permanent forest plots. We then used structural equation modeling to explore the direct and indirect pathways which shape rates of AWP. Across the plot network, stand basal area emerged as the strongest determinant of AWP, with densely packed stands exhibiting the fastest rates of AWP. In addition to stand packing density, both tree diversity and soil phosphorus content were also positively related to productivity. By contrast, historical logging activities negatively impacted AWP through the removal of large trees, which contributed disproportionately to productivity. Understanding what determines variation in wood production across tropical forest landscapes requires accounting for multiple interacting drivers – with stand structure, tree diversity, and soil nutrients all playing a key role. Importantly, our results also indicate that logging activities can have a long‐lasting impact on a forest's ability to sequester and store carbon, emphasizing the importance of safeguarding old‐growth tropical forests.
Cytological study on Sertoli cells and their interactions with germ cells during annual reproductive cycle in turtle
Authors: Ahmed Nisar , Yufei Huang , Yang Ping , Muhammad Yasir Waqas , Zhang Qian , Liu Tengfei , Hong Chen , Lisi Hu , Xiaoya Chu , Chen Qiusheng 
Published: May 2016

AbstractSertoli cells (SCs) play a central role in the development of germ cells within functional testes and exhibit varying morphology during spermatogenesis. This present study investigated the seasonal morphological changes in SCs in the reproductive cycle of Pelodiscus sinensis by light microscopy, transmission electron microscopy (TEM), and immunohistochemistry. During hibernation period with the quiescent of spermatogenesis, several autophagosomes were observed inside the SCs, the processes of which retracted. In early spermatogenesis, when the germ cells started to proliferate, the SCs contained numerous lipid droplets instead of autophagosomes. In late spermatogenesis, the SCs processes became very thin and contacted several round/elongated spermatids in pockets. At this time, abundant endoplasmic reticulum and numerous mitochondria were present in the SCs. The organization of the tight junctions and the adherens junctions between the SCs and germ cells also changed during the reproductive cycle. Moreover, SCs were involved in the formation of cytoplasmic bridges, phagophores, and exosome secretions during spermatogenesis. Tubulobulbar complexes (TBC) were also developed by SCs around the nucleus of the spermatid at the time of spermiation. Strong, positive expression of vimentin was noted on the SCs during late spermatogenesis compared with the hibernation stage and the early stage of spermatogenesis. These data provide clear cytological evidence about the seasonal changes in SCs, corresponding with their different roles in germ cells within the Chinese soft‐shelled turtle Pelodiscus sinensis.
Predicting the distributions of predator (snow leopard) and prey (blue sheep) under climate change in the Himalaya
Authors: Aryal Achyut , Shrestha Uttam Babu , Ji Weihong , Ale Som B. , Shrestha Sujata , Ingty Tenzing , Maraseni Tek , Cockfield Geoff , Raubenheimer David 
Published: May 2016

AbstractFuture climate change is likely to affect distributions of species, disrupt biotic interactions, and cause spatial incongruity of predator–prey habitats. Understanding the impacts of future climate change on species distribution will help in the formulation of conservation policies to reduce the risks of future biodiversity losses. Using a species distribution modeling approach by MaxEnt, we modeled current and future distributions of snow leopard (Panthera uncia) and its common prey, blue sheep (Pseudois nayaur), and observed the changes in niche overlap in the Nepal Himalaya. Annual mean temperature is the major climatic factor responsible for the snow leopard and blue sheep distributions in the energy‐deficient environments of high altitudes. Currently, about 15.32% and 15.93% area of the Nepal Himalaya are suitable for snow leopard and blue sheep habitats, respectively. The bioclimatic models show that the current suitable habitats of both snow leopard and blue sheep will be reduced under future climate change. The predicted suitable habitat of the snow leopard is decreased when blue sheep habitats is incorporated in the model. Our climate‐only model shows that only 11.64% (17,190 km2) area of Nepal is suitable for the snow leopard under current climate and the suitable habitat reduces to 5,435 km2 (reduced by 24.02%) after incorporating the predicted distribution of blue sheep. The predicted distribution of snow leopard reduces by 14.57% in 2030 and by 21.57% in 2050 when the predicted distribution of blue sheep is included as compared to 1.98% reduction in 2030 and 3.80% reduction in 2050 based on the climate‐only model. It is predicted that future climate may alter the predator–prey spatial interaction inducing a lower degree of overlap and a higher degree of mismatch between snow leopard and blue sheep niches. This suggests increased energetic costs of finding preferred prey for snow leopards – a species already facing energetic constraints due to the limited dietary resources in its alpine habitat. Our findings provide valuable information for extension of protected areas in future.
Quality changes of Antarctic krill powder during long term storage
Authors: Nielsen Nina Skall , Lu Henna Fung Sieng , Bruheim Inge , Jacobsen Charlotte 
Published: May 2016

Krill is a valuable sustainable resource of omega‐3 fatty acids and protein, which may be processed into a krill powder for human consumption. The objective of this study was to investigate the stability of krill powder when stored for up to 12 months at room temperature. In addition, the effect of packaging in vacuum was observed. The stability was assessed by changes in concentrations of lipid classes, antioxidants, pyrroles and lipid, and Strecker‐derived volatiles. Some degradation occurred during storage at room temperature. Thus, a minor increase in volatiles, an increase in free fatty acids and a concomitant decrease in antioxidants, tocopherol, and astaxanthin was observed. In addition, there was a minor decrease in phospholipids and n‐3 fatty acids; however, storage at vacuum improved the oxidative stability of krill powder.Practical applications: For the use of krill powder in human nutrition, it is important, that the quality and stability is sufficiently high to retain the nutritional value during storage. This study contributes with information about the stability during storage up to 12 months at room temperature and the effect of packaging the powder in vacuum.Antarctic krill (Euphausia superba) is a shrimp‐like marine crustacean. It is rich in omega‐3 fatty acids, primarily bound in phospholipids in the sn‐2 position of the molecule, making it highly bioavailable. Krill may be processed into powder also rich in protein and astaxanthin. Stability of krill powder, stored for up to 12 months at room temperature, showed slight lipid oxidation.