bluuebunny/crossref_metadata_2025_split huggingface dataset:
A Cesium Rare‐Earth Silicate Cs3RESi6O15 (RE=Dy–Lu, Y, In): The Parent of an Unusual Structural Class Featuring a Remarkable 57 Å Unit Cell Axis
Authors: Terry Rylan , Vinton Daniel , McMillen Colin D. , Kolis Joseph W. 
Published: December 2017

AbstractThe structure of Cs3RESi6O15, where RE=Dy–Lu, Y, In, is unusual in that it contains octahedrally coordinated rare‐earth ions; their relative orientation dictates the structure, as they rotate about the c‐axis supported by the cyclic Si6O15 framework. The repeat unit of the rotation is eight units generating a very long (ca. 57 Å) unit cell axis. This unusual repeat unit is created by the structural flexibility of the hexasilicate ring, which is in turn affected by the size of the rare earth ion as well as the size of alkali ion residing within the silicate layers. Previous work showed for the smaller Sc3+ ion, the rotation of the octahedra is not sufficient to achieve closure at an integral repeat unit and an incommensurate structure results. The products are prepared as large, high quality single crystals using a high‐temperature (650 °C) hydrothermal method with CsOH and F− mineralizers. The presence of fluoride is essential to the formation of the product.
Photochemical Creation of Fluorescent Quantum Defects in Semiconducting Carbon Nanotube Hosts
Authors: Wu Xiaojian , Kim Mijin , Kwon Hyejin , Wang YuHuang 
Published: December 2017

AbstractQuantum defects are an emerging class of synthetic single‐photon emitters that hold vast potential for near‐infrared imaging, chemical sensing, materials engineering, and quantum information processing. Herein, we show that it is possible to optically direct the synthetic creation of molecularly tunable fluorescent quantum defects in semiconducting single‐walled carbon nanotube hosts through photochemical reactions. By exciting the host semiconductor with light that resonates with its electronic transition, we find that halide‐containing aryl groups can covalently bond to the sp2 carbon lattice. The introduced quantum defects generate bright photoluminescence that allows tracking of the reaction progress in situ. We show that the reaction is independent of temperature but correlates strongly with the photon energy used to drive the reaction, suggesting a photochemical mechanism rather than photothermal effects. This type of photochemical reactions opens the possibility to control the synthesis of fluorescent quantum defects using light and may enable lithographic patterning of quantum emitters with electronic and molecular precision.
“Head‐to‐Middle” and “Head‐to‐Tail” cis‐Prenyl Transferases: Structure of Isosesquilavandulyl Diphosphate Synthase
Authors: Gao Jian , Ko Tzu‐Ping , Chen Lu , Malwal Satish R. , Zhang Jianan , Hu Xiangying , Qu Fiona , Liu Weidong , Huang Jian‐Wen , Cheng Ya‐Shan , Chen Chun‐Chi , Yang Yunyun , Zhang Yonghui , Oldfield Eric , Guo Rey‐Ting 
Published: December 2017

AbstractWe report the first X‐ray crystallographic structure of the “head‐to‐middle” prenyltransferase, isosesquilavandulyl diphosphate synthase, involved in biosynthesis of the merochlorin class of antibiotics. The protein adopts the ζ or cis‐prenyl transferase fold but remarkably, unlike tuberculosinol adenosine synthase and other cis‐prenyl transferases (e.g. cis‐farnesyl, decaprenyl, undecaprenyl diphosphate synthases), the large, hydrophobic side chain does not occupy a central hydrophobic tunnel. Instead, it occupies a surface pocket oriented at 90° to the hydrophobic tunnel. Product chain‐length control is achieved by squeezing out the ligand from the conventional allylic S1 binding site, with proton abstraction being achieved using a diphosphate‐Asn‐Ser relay. The structures revise and unify our thinking as to the mechanism of action of many other prenyl transferases and may also be of use in engineering new merochlorin‐class antibiotics.
Electrochemical Synthesis of Aryl Iodides by Anodic Iododesilylation
Authors: Möckel Robert , Hille Jessica , Winterling Erik , Weidemüller Stephan , Faber Tabea Melanie , Hilt Gerhard 
Published: December 2017

AbstractAn electrochemical access to iodinated aromatic compounds starting from trimethylsilyl‐substituted arenes is presented. By design of experiments, highly efficient and mild conditions were identified for a wide range of substrates. A functional group stability test and the synthesis of an important 3‐iodobenzylguanidine radiotracer illustrate the scope of this process.
Enhanced oil recovery from high‐salinity reservoirs by cationic gemini surfactants
Authors: Yuan Tingjiao , Liu Zhe , Gao Ruimin , Hu Guangfa , Zhang Gai , Zhao Jianshe 
Published: December 2017

ABSTRACTIn order to enhance oil recovery from high‐salinity reservoirs, a series of cationic gemini surfactants with different hydrophobic tails were synthesized. The surfactants were characterized by elemental analysis, infrared spectroscopy, mass spectrometry, and 1H‐NMR. According to the requirements of surfactants used in enhanced oil recovery technology, physicochemical properties including surface tension, critical micelle concentration (CMC), contact angle, oil/water interfacial tension, and compatibility with formation water were fully studied. All cationic gemini surfactants have significant impact on the wettability of the oil‐wet surface, and the contact angle decreased remarkably from 98° to 33° after adding the gemini surfactant BA‐14. Under the condition of solution salinity of 65,430 mg/L, the cationic gemini surfactant BA‐14 reduces the interfacial tension to 10−3 mN/m. Other related tests, including salt tolerance, adsorption, and flooding experiments, have been done. The concentration of 0.1% BA‐14 remains transparent with 120 g/L salinity at 50 °C. The adsorption capacity of BA‐14 is 6.3–11.5 mg/g. The gemini surfactant BA‐14 can improve the oil displacement efficiency by 11.09%. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46086.
Laccase‐Catalyzed Synthesis of Low‐Molecular‐Weight Lignin‐Like Oligomers and their Application as UV‐Blocking Materials
Authors: Lim Jieyan , Sana Barindra , Krishnan Ranganathan , Seayad Jayasree , Ghadessy Farid J. , Jana Satyasankar , Ramalingam Balamurugan 
Published: December 2017

AbstractThe laccase‐catalyzed oxidative polymerization of monomeric and dimeric lignin model compounds was carried out with oxygen as the oxidant in aqueous medium. The oligomers were characterized by using gel permeation chromatography (GPC) and matrix‐assisted laser desorption ionization time‐of‐flight mass spectroscopy (MALDI‐TOF MS) analysis. Oxidative polymerization led to the formation of oligomeric species with a number‐average molecular weight (Mn) that ranged from 700 to 2300 Da with a low polydispersity index. Spectroscopic analysis provided insight into the possible modes of linkages present in the oligomers, and the oligomerization is likely to proceed through the formation of C−C linkages between phenolic aromatic rings. The oligomers were found to show good UV light absorption characteristics with high molar extinction coefficient (5000–38 000 m−1 cm−1) in the UV spectral region. The oligomers were blended independently with polyvinyl chloride (PVC) by using solution blending to evaluate the compatibility and UV protection ability of the oligomers. The UV/Vis transmittance spectra of the oligomer‐embedded PVC films indicated that these lignin‐like oligomers possessed a notable ability to block UV light. In particular, oligomers obtained from vanillyl alcohol and the dimeric lignin model were found to show good photostability in accelerated UV weathering experiments. The UV‐blocking characteristics and photostability were finally compared with the commercial low‐molecular‐weight UV stabilizer 2,4‐dihydroxybenzophenone.
Optimal Distance Function for Locally Weighted Average Prediction of Just‐in‐Time Methods
Authors: Fujimoto Yusuke , Maruta Ichiro , Sugie Toshiharu 
Published: December 2017

AbstractThis paper discusses the optimal distance function for Just‐in‐Time prediction. We focus on the standard Locally Weighted Average (LWA) prediction with Mahalanobis distance, and find the optimal distance which minimizes the prediction error. The key idea of this work is to introduce an integral which works as a model of the LWA prediction. This integral approximates the LWA prediction, and it becomes easier to discuss analytically. The main result of this paper is to show that the optimal distance function for such integral is constructed through a convex optimization. A numerical example and an experiment with a motor are shown to demonstrate the validity of the proposed distance function.
The mechanism study of miR‐125b in occurrence and progression of multiple myeloma
Authors: Gao Da , Xiao Zhen , Li Hui‐Ping , Han Dong‐Hai , Zhang Ya‐Peng 
Published: December 2017

AbstractAlthough many efforts have contributed to improve our knowledge of molecular pathogenesis about multiple myeloma (MM), the role and significance of microRNAs and long noncoding RNAs in MM cells, along with the core mechanism remains virtually absent. The mRNA levels of miR‐125b and MALAT1 in MM cell lines were detected by qRT‐PCR. The influence of Lenti‐Sh‐miR‐125b on cell viability and the Notch‐1 pathway‐related proteins were assessed by MTT method and western blot, respectively. We also investigated the regulation effect between MALAT1 and Notch1 pathway. Moreover, the connection between Notch1 signaling and MM cell growth was discussed in‐depth. The reverse effect of pcDNA‐Notch1 on the cell viability and Notch‐1 pathway proteins induced by Si‐MALAT1 was also studied. Furthermore, miR‐125b overexpressing MM cell lines were injected subcutaneously into nude mice. MiR‐125b and MALAT1 were inversely expressed in MM cell lines. Lenti‐Sh‐miR‐125b inhibited the expression of MALAT1 and Notch‐1 protein. Binding sites were confirmed between miR‐125b and MALAT1, and silencing MALAT1 did not alter the expression of Notch‐1. The apoptosis rate was increased and the survival rate was decreased obviously in GSI XII (targeted cleavage of Notch‐1 receptor) group, along with the inhibited Notch1 and HES1 proteins. Moreover, the decreased cell viability and Notch‐1 pathway proteins induced by Si‐MALAT1 could be reversed by pcDNA‐Notch1. Lenti‐Sh‐miR‐125b promoted survival and decreased Notch1 and HES1 proteins levels, while this effect was reversed by si ‐MALAT1. MiR‐125b regulated MALAT1 expression via Notch1 signaling pathway to regulate cell growth, thus participating in the occurrence and progression of MM, which functioned as a therapeutic target for tracking MM.
MicroRNA Detection by DNA‐Mediated Liposome Fusion
Authors: Jumeaux Coline , Wahlsten Olov , Block Stephan , Kim Eunjung , Chandrawati Rona , Howes Philip D. , Höök Fredrik , Stevens Molly M. 
Published: December 2017

AbstractMembrane fusion is a process of fundamental importance in biological systems that involves highly selective recognition mechanisms for the trafficking of molecular and ionic cargos. Mimicking natural membrane fusion mechanisms for the purpose of biosensor development holds great potential for amplified detection because relatively few highly discriminating targets lead to fusion and an accompanied engagement of a large payload of signal‐generating molecules. In this work, sequence‐specific DNA‐mediated liposome fusion is used for the highly selective detection of microRNA. The detection of miR‐29a, a known flu biomarker, is demonstrated down to 18 nm within 30 min with high specificity by using a standard laboratory microplate reader. Furthermore, one order of magnitude improvement in the limit of detection is demonstrated by using a novel imaging technique combined with an intensity fluctuation analysis, which is coined two‐color fluorescence correlation microscopy.
Coronary artery disease, revascularization, and clinical outcomes in transcatheter aortic valve replacement: Real‐world results from the East Denmark Heart Registry
Authors: Millan‐Iturbe Oscar , Sawaya Fadi J. , Lønborg Jacob , Chow Danny H.F. , Bieliauskas Gintautas , Engstrøm Thomas , Søndergaard Lars , De Backer Ole 
Published: December 2017

AbstractTranscatheter aortic valve replacement (TAVR) has become an established therapeutic option for patients with symptomatic, severe aortic stenosis. The optimal treatment strategy for concomitant coronary artery disease (CAD) has not been tested prospectively in a randomized clinical trial. This study aimed to describe the degree of CAD, revascularization strategies, and long‐term clinical outcomes in a large‐scale all‐comers TAVR‐population. Nine hundred and forty‐four consecutive patients underwent TAVR. Obstructive CAD was reported in 224 patients (23.7%)—of these, 150 (66.9%) presented with one‐vessel disease (1‐VD), 51 (22.8%) with 2‐VD, and 23 (10.3%) with 3‐VD. Two‐thirds underwent coronary revascularization before TAVR; half of those patients with 1‐VD and only one‐third of those with multivessel disease were completely revascularized. In general, borderline stenoses (50%–70%) were more frequently revascularized in proximal coronary segments than in more distal segments. Long‐term survival rates by Kaplan–Meier analysis of the total TAVR population at 5 and 9 years were 64.7% and 54.1%, respectively. A diagnostic coronary angiography was performed in 16.5% of patients within 5 years after TAVR; only 4.8% underwent consequent percutaneous coronary intervention (PCI). There was no difference in survival and need for revascularization post‐TAVR between those patients with or without obstructive CAD ± revascularization. Neither was there a survival difference between those with or without previous CABG and/or chronic total occlusion(s). In conclusion, CAD is prevalent in TAVR patients and pre‐TAVR coronary revascularization is typically focused on treating proximal and high‐grade stenosis. A selective pre‐TAVR PCI strategy results in favorable clinical outcomes with very low rates of post‐TAVR coronary revascularization.
A case of herpes simplex virus pneumonia detected by sputum cytodiagnosis
Authors: Yoshimi Mayumi , Satou Yu , Mori Masaya 
Published: December 2017

Key Clinical MessageA sputum test is noninvasive and simple. It contributed to correct diagnosis of a patient with severe acute respiratory failure. We again point out the usefulness of sputum cytodiagnosis for differentiating severe pneumonia.
Rare 48, XYYY syndrome: case report and review of the literature
Authors: Abedi Maryam , Salmaninejad Arash , Sakhinia Ebrahim 
Published: December 2017

Key Clinical Message48, XYYY syndrome is a rare condition. A male with 32‐year‐old and three Y chromosomes is described. This syndrome is phenotypically similar to Klinefelter syndrome. In this patient, Semi‐Klinefelter characteristics such as tall stature, teeth dysmorphology, long length of fingers, partial deformity of the joints, likewise mental health problems were obvious.
Graft‐versus‐host disease, a rare complication after orthotopic liver transplantation
Authors: Ofosu Andrew , Zabolotsky Andrew , Rufail Miguel , Spataro Joseph , Civan Jesse 
Published: December 2017

Key Clinical MessageAcute graft‐versus‐host disease (GVHD) after orthotopic liver transplantation (OLT) is a rare but fatal complication that poses a major diagnostic and therapeutic challenge. Our case highlights the need for further studies to develop therapeutic modalities to improve outcomes in patients who develop GHVD following OLT.
Effect of Potassium Nitrate Modification on the Performance of Copper‐Manganese Oxide Catalyst for Enhanced Soot Combustion
Authors: Zhao Han , Zhou Xiaoxia , Huang Weimin , Pan Linyu , Wang Min , Li Qinru , Shi Jianlin , Chen Hangrong 
Published: December 2017

AbstractAn enhanced catalytic activity and improved reusability were achieved by applying facile KNO3 modification during the synthesis of a copper‐manganese mixed oxide (CuMnO). Upon KNO3 modification, the characteristic finishing temperature (Tf) of catalytic soot combustion was decreased from 360 °C for CuMnO to 338 °C for the K‐modified product CuMnO(K). Moreover, this Tf value for CuMnO(K) remained remarkably low (346 °C) even after five runs of an activity test. The excellent performance of CuMnO(K) is attributed to its well‐dispersed nanoparticle morphology, which is totally different from the microspherical features of CuMnO and is beneficial for its sufficient contact with the soot particles. Additionally, an interesting phase evolution of CuMnO(K) was observed for the first time from Cu1.5Mn1.5O4 to the mixed phases of CuO, K2Mn4O8, and MnOx during the consecutive test runs. These mixed phases are believed to be responsible for the enhancement and stabilization of the catalytic activity. Furthermore, the mechanism for the morphology transformation upon KNO3 modification and for the phase evolution during soot combustion was investigated.
Boron‐ and Iron‐Incorporated α‐Co(OH)2 Ultrathin Nanosheets as an Efficient Oxygen Evolution Catalyst
Authors: Liu Yunhua , Jin Zhaoyu , Li Panpan , Tian Xianqing , Chen Xiaojuan , Xiao Dan 
Published: December 2017

AbstractElectrochemical water splitting is a critical technology for various energy storage and conversion devices, but it is greatly restricted by the sluggish kinetics of the oxygen evolution reaction (OER). Herein, an effective electrocatalyst of boron‐ and iron‐incorporated α‐Co(OH)2 (B‐α‐Co5.8Fe LDH)ultrathin nanosheets was synthesized for the OER by using sodium tetraphenylborate (NaTPB) as a mild alkali and boron source in ethylene glycol/water system (EG‐W). Benefiting from the large accessible surface area (563 m2 g−1) and the synergistic effect of Co−Fe−B,the catalyst (B‐α‐Co5.8Fe LDH) exhibits improved activity and stability in 1 M KOH solution with a low overpotential (264 mV at 10 mA cm−2) and Tafel slope (34 mV dec−1). In addition, this method was also applied to fabricate boron‐ and iron‐incorporated α‐Ni(OH)2. This study should inspire a new pathway to design highly efficient OER catalysts.
Carbon Nanotubes Decorated with Cationic Carbosilane Dendrons and Their Hybrids with Nucleic Acids
Authors: Gutierrez‐Ulloa Carlos E. , Buyanova Marina Yu. , Apartsin Evgeny K. , Venyaminova Alya G. , de la Mata Fco. Javier , Gómez Rafael 
Published: December 2017

AbstractThe first example of non‐covalent functionalization of single‐ and multi‐walled carbon nanotubes (CNTs) with cationic carbosilane dendrons via pyrene anchor groups is reported herein. The non‐covalent functionalization of the CNT surface with dendrons is compatible with the covalent functionalization of CNT tips and defect sites with amino‐compounds. The modified CNTs have been shown to bind therapeutic oligonucleotides efficiently. The results obtained may provide useful insight for the design of multifunctional nanocarriers for nucleic acid delivery.
A hierarchical spatiotemporal analog forecasting model for count data
Authors: McDermott Patrick L. , Wikle Christopher K. , Millspaugh Joshua 
Published: December 2017

AbstractAnalog forecasting is a mechanism‐free nonlinear method that forecasts a system forward in time by examining how past states deemed similar to the current state moved forward. Previous applications of analog forecasting has been successful at producing robust forecasts for a variety of ecological and physical processes, but it has typically been presented in an empirical or heuristic procedure, rather than as a formal statistical model. The methodology presented here extends the model‐based analog method of McDermott and Wikle (Environmetrics, 27, 2016, 70) by placing analog forecasting within a fully hierarchical statistical framework that can accommodate count observations. Using a Bayesian approach, the hierarchical analog model is able to quantify rigorously the uncertainty associated with forecasts. Forecasting waterfowl settling patterns in the northwestern United States and Canada is conducted by applying the hierarchical analog model to a breeding population survey dataset. Sea surface temperature (SST) in the Pacific Ocean is used to help identify potential analogs for the waterfowl settling patterns.
Exposure to levonorgestrel increases nest acquisition success and decreases sperm motility in the male fathead minnow (Pimephales promelas)
Authors: Frankel Tyler , Yonkos Lance , Ampy Franklin , Frankel Jack 
Published: December 2017

Abstract

Progestins are utilized as a component of human contraceptives, and commonly enter the environment via wastewater treatment plant effluent. Certain progestins activate fish androgen receptors and cause decreases in fecundity and masculinization of females. We used a nest acquisition assay and computer-assisted sperm analysis to examine the effects of levonorgestrel on male fathead minnow (Pimephales promelas) reproductive fitness. Males were exposed to 0, 10, or 100 ng/L levonorgestrel for 14 d. Combinations of a control male and a male from one of the treatments were placed into a competitive nesting assay, and the time each male spent holding the nest and time spent exhibiting aggressive behaviors were analyzed at 48 h postexposure. Semen samples were analyzed for total motility, straight-line velocity, curvilinear velocity, average path velocity, linearity, beat cross frequency, and wobble at 0, 30, 60, 90, and 120 s postactivation. Males exposed to either 10 or 100 ng/L of levonorgestrel exhibited increased nest acquisition success and lower levels of aggression compared with control–control pairings, as well as decreases in multiple sperm motion characteristics. Our results suggest that further research is required to ascertain the effects of levonorgestrel on male gamete quality and reproductive behaviors. Environ Toxicol Chem 2018;37:1131–1137. © 2017 SETAC
Early Paleozoic volcanic rocks with VMS mineralization from eastern Tianshan Orogen: Implication for tectonic evolution
Authors: Deng Xiao‐Hua , Wang Jing‐Bin , Santosh M. , Wang Yu‐Wang , Long Ling‐Li , Zhang Hui‐Qiong , Yang Li‐Ya , Xu Jun , Chen Xi , Chen Lei 
Published: December 2017

The Early Paleozoic volcanic rocks of Daliugou Formation at the southern margin of the Turpan‐Hami Basin in the eastern Tianshan Orogen host important volcanogenic massive sulfide (VMS) deposits. Here, we report zircon U–Pb ages of dacite and tuff from the hangingwall and footwall of the VMS deposit, and granodiorite that intruded the volcanics. Our data reveal that the dacite crystallized at 441.4 ± 2.6 Ma and carry older xenocrysts of 2,664, 1,854, and 1,074 Ma. Zircons in the intensively altered tuff crystallized at 440.4 ± 2.9 Ma, with inherited grains of 2,517.4 ± 31.9, and 782.9 ± 11.1 Ma. Zircons in the granodiorite yield a weighted mean age of 430.0 ± 1.7 Ma. The volcanics in the Daliugou Formation evolved from basaltic andesite (>450 Ma) and tuff (450–440 Ma) to dacitic lava (440–420 Ma). We envisage a subduction‐related tectonic setting for the Daliugou Formation rocks when the eastern Kalatag area transformed from an island arc before 450 Ma, through back‐arc basin during 450–440 Ma, to island arc during 440–420 Ma.