bluuebunny/crossref_metadata_2025 huggingface dataset:
Reduced synchronized brain activity in schizophrenia during viewing of comedy movies
Authors: Tu Pei-Chi , Su Tung-Ping , Lin Wei-Chen , Chang Wan-Chen , Bai Ya-Mei , Li Cheng-Ta , Lin Fa-Hsuan
Published: September 2019

Previous evaluation of brain function in schizophrenia has focused on standard experimental tasks, with cerebral response to natural stimuli less clear. This study employed inter-subject correlation (ISC) analysis to investigate the neural basis of humor processing during free viewing of comedy movies in patients with schizophrenia. We recruited 29 patients diagnosed with schizophrenia and 29 healthy, age- and sex-matched controls. Each participant underwent fMRI scanning during two viewings of three comedy movie clips. The ISC map from each participant pair within each population group and each movie viewing was separately derived. The significance of ISC within a group and between two groups were assessed by bootstrapping. The ISC map from each patient pair were also correlated with the product of Positive and Negative Syndrome Scale (PANSS) rating between the same participant pair in schizophrenia patients. Schizophrenia patients showed significant ISC in bilateral lateraloccipital, bilateral superior frontal, left supramarginal, and right lateralorbiofrontal cortices. Compared with the controls, the schizophrenia group exhibited significantly lower ISC in the left superior temporal sulcus, bilateral supramarginal, and bilateral inferiorparietal cortices. Higher clinical severity (higher total PANSS rating) was associated with lower ISC in the middle frontal and middle temporal regions, and also higher ISC in the visual cortex, inferior temporal gyrus, and anterior cingulate. The findings indicated that patients with schizophrenia are characterized by lower ISC in a frontal parietal network while viewing comedy film clips, which implicated a deficit in the cognitive component of humor processing. The lower synchronization in parts of the frontal parietal network also correlated with symptom severity.
Interrogating Mutant Allele Expression via Customized Reference Genomes to Define Influential Cancer Mutations
Authors: Grant Adam D. , Vail Paris , Padi Megha , Witkiewicz Agnieszka K. , Knudsen Erik S.
Published: September 2019

Genetic alterations are essential for cancer initiation and progression. However, differentiating mutations that drive the tumor phenotype from mutations that do not affect tumor fitness remains a fundamental challenge in cancer biology. To better understand the impact of a given mutation within cancer, RNA-sequencing data was used to categorize mutations based on their allelic expression. For this purpose, we developed the MAXX (Mutation Allelic Expression Extractor) software, which is highly effective at delineating the allelic expression of both single nucleotide variants and small insertions and deletions. Results from MAXX demonstrated that mutations can be separated into three groups based on their expression of the mutant allele, lack of expression from both alleles, or expression of only the wild-type allele. By taking into consideration the allelic expression patterns of genes that are mutated in PDAC, it was possible to increase the sensitivity of widely used driver mutation detection methods, as well as identify subtypes that have prognostic significance and are associated with sensitivity to select classes of therapeutic agents in cell culture. Thus, differentiating mutations based on their mutant allele expression via MAXX represents a means to parse somatic variants in tumor genomes, helping to elucidate a gene’s respective role in cancer.
The indole compound MA-35 attenuates tumorigenesis in an inflammation-induced colon cancer model
Authors: Kanehara Keigo , Ohnuma Shinobu , Kanazawa Yoshitake , Sato Keisuke , Kokubo Shoji , Suzuki Hideyuki , Karasawa Hideaki , Suzuki Takehiro , Suzuki Chitose , Naitoh Takeshi , Unno Michiaki , Abe Takaaki
Published: September 2019

In inflammatory bowel disease, chronic inflammation results in the development of colon cancer known as colitis-associated cancer. This disease is associated with tumor necrosis factor-α (TNF-α) signaling. In addition, intestinal fibrosis is a common clinical complication that is promoted by transforming growth factor β1 (TGF-β1). In our previous study, MA-35 attenuated renal fibrosis by inhibiting both TNF-α and TGF-β1 signaling. This study aimed to identify the possible antitumor effects and antifibrotic effects of MA-35 using an AOM/DSS mouse model. MA-35 was orally administered every day for 70 days in the AOM/DSS mouse model. There was no difference in weight loss between the AOM/DSS group and the AOMDSS + MA-35 group, but the disease activity index score and the survival rate were improved by MA-35. MA-35 blocked the anemia and shortening of the colon induced by AOM/DSS. MA-35 reduced the macroscopic formation of tumors in the colon. In the microscopic evaluation, MA-35 reduced inflammation and fibrosis in areas with dysplasia. Furthermore, the TNF-α mRNA level in the colon tended to be reduced, and the interleukin 6, TGF-β1 and fibronectin 1 mRNA levels in the colon were significantly reduced by MA-35. These results suggested that MA-35 inhibited AOM/DSS-induced carcinogenesis by reducing inflammation and fibrosis.
Critical transitions in suspended sediment dynamics in a temperate meso-tidal estuary
Authors: Cox T. J. S. , Maris T. , Van Engeland T. , Soetaert K. , Meire P.
Published: September 2019

There is growing consensus that human interventions can fundamentally change fine sediment transport in estuaries. Critical transitions in response to human interventions have been hypothesized based on indirect observational evidence and theoretical understanding. So far direct evidence has been lacking. Based on a 20 year data-set of surface suspended particulate matter (SPM) concentrations, we present empirical evidence of critical transitions in a temperate meso-tidal estuary. In 2008–2009 the SPM dynamics of the Scheldt estuary (Belgium/The Netherlands) changed dramatically. Not only did the total amount of sediment in suspension increase, a new maximum turbidity zone (MTZ) at typical winter discharges appeared. At intermediate and low summer discharges the longitudinal distribution of SPM now flickers between two markedly different states. Our data suggest that a range of human interventions (fairway widening and deepening, dredging and dumping activities) set the scene leading to the observed transitions. Moreover the freshwater MTZ in the Scheldt and in its major tributary exhibit an increasing sensitivity towards freshwater discharge, coinciding with water quality improvements. This suggests large scale impacts of changes in eutrophication status on estuarine sediment dynamics. This has largely been a blind spot in morphodynamic research.
The Detection and Characterization of Herpes Simplex Virus Type 1 in Confirmed Measles Cases
Authors: Li Chongshan , Li Yunyi , Yang Yuying , Wang Jing , Zhu Caixia , Tang Suwen , Pang Cong , Tang Wei , Cai Qiliang , Li Zhi , Hu Jiayu , Cui Xiaoxian , Zhang Xi , Xu Songtao , Zhang Yan , Yuan Zhengan , Hu Yunwen , Yuan Zhenghong
Published: September 2019

Based on measles surveillance in Shanghai, People’s Republic of China, from 2006 to 2015, we found that measles virus isolates from 40 throat swab samples exhibited atypical cytopathic effects in Vero/hSLAM cells, which was found to be a result of coinfection with measles virus (MeV) and human herpes simplex virus type 1 (HSV-1). Serological and molecular approaches were used to confirm and characterize the coinfections in these patients. Among the 40 measles cases, measles-specific IgM was detected in 37 cases, while measles-specific IgG was detected in 27 cases. HSV-1-specific IgM and IgG were detected in 7 and 34 cases, respectively, suggesting that most of the MeV infections were primary, but that HSV-1 infection was due to the reactivation of latent virus in most cases. The titers of HSV-1 IgG in patients with either measles or measles-HSV-1 coinfection were significantly higher than those in the healthy group (P = 0.0026 and P < 0.0001, respectively); however, there was no significant difference in the titers of HSV-1 IgG in the MeV and MeV-HSV-1 coinfection patients (P = 0.105). Nucleic acids from MeV and HSV-1 were detected in 40 and 39 throat swabs, respectively. Twenty five MeV RNA sequences were genotyped, and all represented genotype H1, which is the endemic genotype in China. Sequences from the glycoprotein G gene of HSV-1 were used to classify the isolates into two distinct phylogenetic groups: 34 belonged to group A and 3 belonged to group B.
Sampling, identification and sensory evaluation of odors of a newborn baby’s head and amniotic fluid
Authors: Uebi Tatsuya , Hariyama Takahiko , Suzuki Kazunao , Kanayama Naohiro , Nagata Yoshifumi , Ayabe-Kanamura Saho , Yanase Shihoko , Ohtsubo Yohsuke , Ozaki Mamiko
Published: September 2019

For baby odor analyses, noninvasive, stress-free sample collection is important. Using a simple method, we succeeded in obtaining fresh odors from the head of five newborn babies. These odors were chemically analyzed by two-dimensional gas chromatography coupled with mass spectrometry (GC × GC-MS), and compared with each other or with the odor of amniotic fluid from the baby’s mother. We identified 31 chemical components of the volatile odors from neonate heads and 21 from amniotic fluid. Although 15 of these components were common to both sources, there was an apparent difference in the GC × GC patterns between the head and amniotic fluid odors, so the neonate head odor might be individually distinct immediately after birth. Therefore, we made artificial mixtures of the major odor components of the neonate head and maternal amniotic fluid, and used psychological tests to examine whether or not these odors could be distinguished from each other. Our data show that the artificial odor of a neonate head could be distinguished from that of amniotic fluid, and that the odors of artificial head odor mixtures could be correctly discriminated for neonates within an hour after birth and at 2 or 3 days of age.
Identification of stably expressed housekeeping miRNAs in endothelial cells and macrophages in an inflammatory setting
Authors: Link Fabian , Krohn Knut , Schumann Julia
Published: September 2019

Reliable quantification of miRNA expression by qRT-PCR crucially depends on validated housekeepers for data normalization. Here we present thoroughly tested miRNAs eligible as references in immunological studies utilizing endothelial cells and macrophages, respectively. Endothelial cells (cell line: TIME) and macrophages (cell line: RAW264.7) were treated with various pro- and anti-inflammatory mediators (cytokines, LPS, unsaturated fatty acids) given as either single substances or in combination. Isolated RNA was screened for stably expressed miRNAs by next generation sequencing. Housekeeper candidates were thereafter validated by means of two independent quantification techniques: qRT-PCR for relative quantification and ddPCR for absolute quantification. Both methods consistently confirmed the suitability of let-7g-5p, let-7i-5p, miR-127-3p and miR-151a-5p in cytokine/fatty acid-treated TIME and miR-16-5p, miR-27b-3p, miR-103a-3p and miR-423-3p in LPS/fatty acid-treated RAW264.7, respectively as housekeeping miRNAs. With respect to abundancy and over all expression stability the miRNAs miR-151a-5p (cell line: TIME) as well as miR-27b-3p and miR-103a-3p (cell line: RAW264.7) can be particularly recommended for normalization of qRT-PCR data.
Target-oriented motor imagery for grasping action: different characteristics of brain activation between kinesthetic and visual imagery
Authors: Lee Woo Hyung , Kim Eunkyung , Seo Han Gil , Oh Byung-Mo , Nam Hyung Seok , Kim Yoon Jae , Lee Hyun Haeng , Kang Min-Gu , Kim Sungwan , Bang Moon Suk
Published: September 2019

Motor imagery (MI) for target-oriented movements, which is a basis for functional activities of daily living, can be more appropriate than non-target-oriented MI as tasks to promote motor recovery or brain-computer interface (BCI) applications. This study aimed to explore different characteristics of brain activation among target-oriented kinesthetic imagery (KI) and visual imagery (VI) in the first-person (VI-1) and third-person (VI-3) perspectives. Eighteen healthy volunteers were evaluated for MI ability, trained for the three types of target-oriented MIs, and scanned using 3 T functional magnetic resonance imaging (fMRI) under MI and perceptual control conditions, presented in a block design. Post-experimental questionnaires were administered after fMRI. Common brain regions activated during the three types of MI were the left premotor area and inferior parietal lobule, irrespective of the MI modalities or perspectives. Contrast analyses showed significantly increased brain activation only in the contrast of KI versus VI-1 and KI versus VI-3 for considerably extensive brain regions, including the supplementary motor area and insula. Neural activity in the orbitofrontal cortex and cerebellum during VI-1 and KI was significantly correlated with MI ability measured by mental chronometry and a self-reported questionnaire, respectively. These results can provide a basis in developing MI-based protocols for neurorehabilitation to improve motor recovery and BCI training in severely paralyzed individuals.
Magnetohydrodynamic nanofluid radiative thermal behavior by means of Darcy law inside a porous media
Authors: Nguyen-Thoi Trung , Sheikholeslami M. , Shah Zahir , Kumam Poom , Shafee Ahmad
Published: September 2019

Radiative nanomaterial thermal behavior within a permeable closed zone with elliptic hot source is simulated. Darcy law is selected for simulating permeable media in existence of magnetic forces. Contour plots for various buoyancy, Hartmann numbers and radiation parameter were illustrated. Carrier fluid is Al2O3-water with different shapes. Outputs prove that conduction mode augments with enhance ofHa.Nuaugments with considering radiation source term.
Inkjet-printed MXene micro-scale devices for integrated broadband ultrafast photonics
Authors: Jiang Xiantao , Li Wenjia , Hai Ting , Yue Rui , Chen Zhangwei , Lao Changshi , Ge Yanqi , Xie Guoqiang , Wen Qiao , Zhang Han
Published: September 2019

MXene, as a novel 2D crystal material, possessing tunable bandgap, low optical attenuation and broadband nonlinear optical responses that may promote the fabrications of advanced electro-photonics devices has gathered remarkable attention recently. However, current investigations of 2D crystals for photonics devices suffer from the limitations of reproducibility, scalability, and compatibility. Inkjet printing is one of the powerful additive manufacturers that facilitate well-controlled, low-cost, scalable and small-footprint electro-photonics devices on myriad substrates. Herein, we directly inkjet printed MXene nanosheets in laser resonators with both fiber and free-space geometrics, and achieved extensive spectral band ultrafast laser operations from near- to the mid-infrared regime with pulse duration going to 100 femtoseconds. The demonstrations of versatile inkjet-printed devices based on MXene, while forthputting its distinct electro-optical properties, may allow the realizations of advanced MXene enable photonics devices shortly.
Structural determinants of CO2-sensitivity in the β connexin family suggested by evolutionary analysis
Authors: Dospinescu Valentin-Mihai , Nijjar Sarbjit , Spanos Fokion , Cook Jonathan , de Wolf Elizabeth , Biscotti Maria Assunta , Gerdol Marco , Dale Nicholas
Published: September 2019

A subclade of connexins comprising Cx26, Cx30, and Cx32 are directly sensitive to CO2. CO2 binds to a carbamylation motif present in these connexins and causes their hemichannels to open. Cx26 may contribute to CO2-dependent regulation of breathing in mammals. Here, we show that the carbamylation motif occurs in a wide range of non-mammalian vertebrates and was likely present in the ancestor of all gnathostomes. While the carbamylation motif is essential for connexin CO2-sensitivity, it is not sufficient. In Cx26 of amphibia and lungfish, an extended C-terminal tail prevents CO2-evoked hemichannel opening despite the presence of the motif. Although Cx32 has a long C-terminal tail, Cx32 hemichannels open to CO2 because the tail is conformationally restricted by the presence of proline residues. The loss of the C-terminal tail of Cx26 in amniotes was an evolutionary innovation that created a connexin hemichannel with CO2-sensing properties suitable for the regulation of breathing.
Strategies for enhancing the photocurrent, photovoltage, and stability of photoelectrodes for photoelectrochemical water splitting
Authors: Yang Wooseok , Prabhakar Rajiv Ramanujam , Tan Jeiwan , Tilley S. David , Moon Jooho
Published: September 2019

In this review, we survey recent strategies for photoelectrode optimization and advanced characterization methods towards efficient water splitting cells via feedback from these characterization methods.
Lyotropic liquid crystals and linear supramolecular polymers of end-functionalized oligosaccharides
Authors: Myllymäki Teemu T. T. , Guliyeva Aynur , Korpi Antti , Kostiainen Mauri A. , Hynninen Ville , Nonappa Nonappa , Rannou Patrice , Ikkala Olli , Halila Sami
Published: September 2019

Lyotropic liquid crystallinity and fibers were observed from linear supramolecular polysaccharides consisting in permethylated maltoheptaose both end-functionalized with UPy stickers.
Glass-transition-induced color-changing resins containing layered polydiacetylene
Authors: Ishioka Shuhei , Watanabe Kei , Imai Hiroaki , Tseng Yu-Jen , Peng Chi-How , Oaki Yuya
Published: September 2019

Simultaneous polymerization and crystallization provide a phase-segregated composite of polystyrene (PSt) and layered polydiacetylene (PDA) exhibiting glass-transition-induced color-change properties.
Ultrathin 2D nickel zeolitic imidazolate framework nanosheets for electrocatalytic reduction of CO2
Authors: Wu Jian-Xiang , Yuan Wei-Wen , Xu Ming , Gu Zhi-Yuan
Published: September 2019

The FE of CO increased from 33.7% of bulk Ni(Im)2 to 78.8% of 2D Ni(Im)2-5 nm, which showed that the thinner the MOF nanosheets, the higher the catalytic selectivity.
Lithium compounds as single site catalysts for hydroboration of alkenes and alkynes
Authors: Bisai Milan Kumar , Yadav Sandeep , Das Tamal , Vanka Kumar , Sen Sakya S.
Published: September 2019

Readily accessible lithium compounds have been employed to catalyze the hydroboration of alkene and alkynes including terpenes using HBpin with anti-Markovnikov selectivity. The mechanism is proposed on the basis of experimental and DFT studies.
Surface oxygen vacancy defect engineering of p-CuAlO2via Ar&H2 plasma treatment for enhancing VOCs sensing performances
Authors: Tong Bin , Meng Gang , Deng Zanhong , Horprathum Mati , Klamchuen Annop , Fang Xiaodong
Published: September 2019

Ar&H2 plasma treatment offers a facile approach to engineer surface VO defects, which substantially enhance the VOCs responses of p-type delafossite CuAlO2 sensor.
The sp2 character of new two-dimensional AsB with tunable electronic properties predicted by theoretical studies
Authors: Zhang Jie , Liu Huijun , Gao Yun , Xia Xiaohong , Huang Zhongbing
Published: September 2019

We identify a semiconducting 2D electronic material, single-layer AsB, which has a suitable direct bandgap of 1.18 eV. Its frontiers state is sp2 orbital hybridization, which can be effectively tuned by layer thickness, stacking order and strain.
A high-throughput computational approach to UV-Vis spectra in protein mutants
Authors: Paulikat Mirko , Mata Ricardo A. , Gelabert Ricard
Published: September 2019

An efficient method to predict the shift of absorption spectra of a chromophore due to a mutation is applied to red fluorescent protein mCardinal.
Chiral salen Cr(iii) complexes encapsulated in thermo-responsive polymer nanoreactors for asymmetric epoxidation of alkenes in water
Authors: Wang Weiying , Li Chaoping , Pi Yibing , Wang Jiajun , Tan Rong , Yin Donghong
Published: September 2019

Thermo-responsive polymer nanoreactors containing chiral salen Cr(iii) complexes exhibited unprecedented efficiency and facile reusability in asymmetric epoxidation of unfunctionalized olefins in water.
Mechanistic study of the selective hydrogenation of carboxylic acid derivatives over supported rhenium catalysts
Authors: Toyao Takashi , Ting Kah Wei , Siddiki S. M. A. Hakim , Touchy Abeda S. , Onodera Wataru , Maeno Zen , Ariga-Miwa Hiroko , Kanda Yasuharu , Asakura Kiyotaka , Shimizu Ken-ichi
Published: September 2019

The structure and performance of TiO2-supported Re (Re/TiO2) catalysts for selective hydrogenation of carboxylic acid derivatives have been investigated.
Self-supported CoFe LDH/Co0.85Se nanosheet arrays as efficient electrocatalysts for the oxygen evolution reaction
Authors: Jin Weiyang , Liu Fang , Guo Xiaoliang , Zhang Jun , Zheng Lekai , Hu Yongchuan , Mao Jing , Liu Hui , Xue Yanming , Tang Chengchun
Published: September 2019

Self-supported binary hybrid heterogeneous CoFe LDH/Co0.85Se nanosheet array catalyst for efficient oxygen evolution reaction.
CO2 activation by manganese pincer complexes through different modes of metal–ligand cooperation
Authors: Kumar Amit , Daw Prosenjit , Espinosa-Jalapa Noel Angel , Leitus Gregory , Shimon Linda J. W. , Ben-David Yehoshoa , Milstein David
Published: September 2019

Activation of CO2 by manganese pincer complexes using two different modes of metal–ligand cooperativity (amido/amino mode and dearomatization/aromatization mode) is reported.
A photosystem I monolayer with anisotropic electron flow enables Z-scheme like photosynthetic water splitting
Authors: Zhao Fangyuan , Wang Panpan , Ruff Adrian , Hartmann Volker , Zacarias Sónia , Pereira Inês. A. C. , Nowaczyk Marc M. , Rögner Matthias , Conzuelo Felipe , Schuhmann Wolfgang
Published: September 2019

An oriented photosystem I monolayer with minimised short-circuiting provides anisotropic electron flow, further coupling to a hydrogenase for realising light-induced H2 evolution.
Osmotic-engine-driven liposomes in microfluidic channels
Authors: Shoji Kan , Kawano Ryuji
Published: September 2019

A new liposome migration mechanism in a microfluidic channel based on an osmotic engine model.
Response mechanism of mine-isolated fungus Aspergillus niger IOC 4687 to copper stress determined by proteomics
Authors: Dias Meriellen , Gomes de Lacerda José Thalles Jocelino , Perdigão Cota de Almeida Silas , de Andrade Lidiane Maria , Oller do Nascimento Claudio Augusto , Rozas Enrique Eduardo , Mendes Maria Anita
Published: September 2019

Proteomic analysis of the fungus Aspergillus niger showed that its capacity to absorb metals was boosted by physiological modification under metal stress conditions. To investigate the proteome elicited by copper stress, the mine-isolated strain A. niger IOC 4687 was cultured in the absence (control) or presence of copper ions (50 mg L−1) for 72 h. Protein extract from each treatment was analyzed by nano-liquid chromatography-mass spectrometry and proteins were identified using PEAKS Studio 8.5 software. Grouping proteins by functional category showed that antioxidant enzymes, such as catalase, superoxide dismutase, and cytochrome c peroxidase, were present in both treatments. However, heat shock proteins (Hsp60 and Hsp70) and some metalloproteins (LMBR1 domain protein and A. niger contig An09c0040) were only observed after copper treatment. These proteins were the cellular response to the stress conditions. In conclusion, significant changes in the proteome of A. niger were observed due to the presence of copper.
Changes in copper, zinc and cadmium distributions in the liver of Formosan squirrels with characteristic high copper accumulation
Authors: Suzuki Yoshinari , Ogra Yasumitsu , Machida Noboru , Watanabe Izumi
Published: September 2019

We investigated the copper toxicity and the role of metallothionein in Formosan squirrels, which are newly discovered copper-accumulating animals.
Preparation and characterization of 0D Au NPs@3D BiOI nanoflower/2D NiO nanosheet array heterostructures and their application as a self-powered photoelectrochemical biosensing platform
Authors: Han Qingzhi , Wang Hanyu , Qi Yanting , Wu Dan , Wei Qin
Published: September 2019

SPR enhanced self-powered PEC sensing platform for glucose detection.
Large-scale efficient water harvesting using bioinspired micro-patterned copper oxide nanoneedle surfaces and guided droplet transport
Authors: Sharma Vipul , Yiannacou Kyriacos , Karjalainen Markus , Lahtonen Kimmo , Valden Mika , Sariola Veikko
Published: September 2019

As the Earth's atmosphere contains an abundant amount of water as vapors, a device which can capture a fraction of this water could be a cost-effective and practical way of solving the water crisis.
Ultrahigh conductivity of graphene nanoribbons doped with ordered nitrogen
Authors: Li Xiao-Fei , Yan Wei-Wei , Rao Jia-Rui , Liu Dong-Xue , Zhang Xiang-Hua , Cao Xinrui , Luo Yi
Published: September 2019

Ordered nitrogen-doping increases carrier density but does not harm the high mobility of GNRs, resulting in ultrahigh conductivities.
Condensation of 9-fluorenone and phenol using an ionic liquid and a mercapto compound synergistic catalyst
Authors: Lei Yan , Yu Limei , Shen Maochang , Luo Shikang , Gao Zhanxian
Published: September 2019

A SO3H-functionalized ionic liquid and thiol co-catalyst synergistically catalyze the condensation reaction of 9-fluorenone with phenol.
A core@shell hollow heterostructure of Co3O4 and Co3S4: an efficient oxygen evolution catalyst
Authors: Mahala Chavi , Sharma Mamta Devi , Basu Mrinmoyee
Published: September 2019

A hollow core@shell nanostructure of Co3O4 and Co3S4 helps to enhance the electrocatalytic activity for the OER.
Non-volatile, phase-transition smart gels visually indicating in situ thermal status for sensing applications
Authors: Seo Dong Gyu , Kim Yong Min , Ahn Hyungju , Moon Hong Chul
Published: September 2019

Non-volatile, phase-transition, thermoresponsive smart gels directly indicating thermal status are proposed.
Magneto-mechanical actuation of magnetic responsive fibrous scaffolds boosts tenogenesis of human adipose stem cells
Authors: Tomás Ana R. , Gonçalves Ana I. , Paz Elvira , Freitas Paulo , Domingues Rui M. A. , Gomes Manuela E.
Published: September 2019

Topographical cues of magnetically responsive tendon mimetic 3D scaffolds in combination with magneto-mechanical stimulation of human adipose stem cells synergistically boost their tenogenesis.
Endoplasmic reticulum targeted fluorescent probe for the detection of hydrogen sulfide based on a twist-blockage strategy
Authors: Zhang Yongru , Zhang Beibei , Li Zipeng , Wang Lianbang , Ren Xueling , Ye Yong
Published: September 2019

An ER-targeted fluorescent probe based on a twist-blockage strategy was developed for both endogenous and exogenous H2S detection.
Water-retaining, tough and self-healing hydrogels and their uses as fire-resistant materials
Authors: Cui Xiao Feng , Zheng Wen Jiang , Zou Wei , Liu Xing Yong , Yang Hu , Yan Jie , Gao Yang
Published: September 2019

Hydrogels as fire-resistant materials have attracted great attention due to their high water content and tailored shapes that can cover various surfaces.
A heterotrimetallic synthetic approach in versatile functionalization of nanosized {MxCu13–xW7}3+ and {M1Cu8W6} (M = Co, Ni, Mn, Fe) metal–cyanide magnetic clusters
Authors: Liberka Michal , Kobylarczyk Jedrzej , Muziol Tadeusz M. , Ohkoshi Shin-ichi , Chorazy Szymon , Podgajny Robert
Published: September 2019

The addition of 3d metal heteroatom into CuII(Me3tacn)[W(CN)8]n− cluster system governs its structural and magnetic features.
Defective crystalline molybdenum phosphides as bifunctional catalysts for hydrogen evolution and hydrazine oxidation reactions during water splitting
Authors: Gao Yan , Wang Qiang , He Ting , Zhang Jun-Ye , Sun Hao , Zhao Bin , Xia Bao Yu , Yan Ya , Chen Yuan
Published: September 2019

Defect-rich crystalline molybdenum phosphide nanoparticles anchored on reduced graphene oxide serve as an efficient bifunctional electrocatalyst for both hydrogen evolution and hydrazine oxidation reactions.
A matching algorithm with isotope distribution pattern in LC-MS based on support vector machine (SVM) learning model
Authors: Cui Jian , Chen Qiang , Dong Xiaorui , Shang Kai , Qi Xin , Cui Hao
Published: September 2019

In proteomics, it is important to detect, analyze, and quantify complex peptide components and differences.
Fabrication of detonation nanodiamond@sodium alginate hydrogel beads and their performance in sunlight-triggered water release
Authors: Zheng Dan , Bai Bo , Xu Xiaohui , He Yunhua , Li Shan , Hu Na , Wang Honglun
Published: September 2019

Composite hydrogel beads prepared by sodium alginate with hydrophilicity and detonation nanodiamond with photothermal conversion property exhibited apparent water release behavior under illumination.
A restricted access molecularly imprinted polymer coating on metal–organic frameworks for solid-phase extraction of ofloxacin and enrofloxacin from bovine serum
Authors: Sun Zhian , Liu Huachun , Zhou Yanqiang , Zhao Shanwen , Li Jianmin , Wang Xiaoxiao , Gong Bolin
Published: September 2019

A restricted access molecularly imprinted polymer (RAMIP) crosslinked with bovine serum albumin (BSA) was prepared on the surface of the mesoporous UiO-66-NH2 metal–organic framework (MOF).
Design of efficient non-doped blue emitters: toward the improvement of charge transport
Authors: Kang Sunwoo , Moon Jong Hun , Kim Taekyung , Lee Jin Yong
Published: September 2019

Non-doped blue emitters are proposed for efficient fluorescence devices with high singlet exciton yield induced by high triplet–triplet fusion.
Design of highly porous Fe3O4@reduced graphene oxide via a facile PMAA-induced assembly
Authors: Wang Huan , Kalubowilage Madumali , Bossmann Stefan H. , Amama Placidus B.
Published: September 2019

Advances in the synthesis and processing of graphene-based materials have presented the opportunity to design novel lithium-ion battery (LIB) anode materials that can meet the power requirements of next-generation power devices.
Structure and primary particle double-tuning by trace nano-TiO2 for a high-performance LiNiO2 cathode material
Authors: Deng Shiyi , Li Yunjiao , Dai Qiongyu , Fu Jiamin , Chen Yongxiang , Zheng Junchao , Lei Tongxing , Guo Jia , Gao Jing , Li Wei
Published: September 2019

Nano-TiO2 modification helps strengthen the structure and tune the morphology of LiNiO2 to promote improved electrochemical properties.
Comparison of perovskite and perovskite derivatives for use in anion-based pseudocapacitor applications
Authors: Forslund Robin P. , Pender Joshua , Alexander Caleb T. , Johnston Keith P. , Stevenson Keith J.
Published: September 2019

A comparison of perovskite and perovskite derivatives utilized for pseudocapacitive charge storage via anion intercalation.
Enhanced efficiency and stability of PTB7-Th-based multi-non-fullerene solar cells enabled by the working mechanism of the coexisting alloy-like structure and energy transfer model
Authors: Oh Sora , Song Chang Eun , Lee Taeho , Cho Ara , Lee Hang Ken , Lee Jong-Cheol , Moon Sang-Jin , Lim Eunhee , Lee Sang Kyu , Shin Won Suk
Published: September 2019

A simple-structured nonfullerene acceptor (NFA), T2-ORH, consisting of a bithiophene core and octyl-substituted rhodanine ends is utilized as the third component in ternary-blend solar cells with PTB7-Th and EH-IDTBR as host materials.
Boosting the Zn-ion storage capability of birnessite manganese oxide nanoflorets by La3+ intercalation
Authors: Zhang Haozhe , Liu Qiyu , Wang Jing , Chen Kunfeng , Xue Dongfeng , Liu Jie , Lu Xihong
Published: September 2019

A kind of La3+ inserted δ-MnO2 was synthesized by a facile process. Benefiting from the larger interlamellar spacing and reduced Zn2+ (de)insertion resistance after intercalation, the capability and rate performance is significantly boosted.
Evolving mtDNA populations within cells
Authors: Johnston Iain G. , Burgstaller Joerg P.
Published: September 2019

Mitochondrial DNA (mtDNA) encodes vital respiratory machinery. Populations of mtDNA molecules exist in most eukaryotic cells, subject to replication, degradation, mutation, and other population processes. These processes affect the genetic makeup of cellular mtDNA populations, changing cell-to-cell distributions, means, and variances of mutant mtDNA load over time. As mtDNA mutant load has nonlinear effects on cell functionality, and cell functionality has nonlinear effects on tissue performance, these statistics of cellular mtDNA populations play vital roles in health, disease, and inheritance. This mini review will describe some of the better-known ways in which these populations change over time in different organisms, highlighting the importance of quantitatively understanding both mutant load mean and variance. Due to length constraints, we cannot attempt to be comprehensive but hope to provide useful links to some of the many excellent studies on these topics.
Toward long-lasting artificial cells that better mimic natural living cells
Authors: Yeh Martín Noël , Valer Luca , Mansy Sheref S.
Published: September 2019

Chemical communication is ubiquitous in biology, and so efforts in building convincing cellular mimics must consider how cells behave on a population level. Simple model systems have been built in the laboratory that show communication between different artificial cells and artificial cells with natural, living cells. Examples include artificial cells that depend on purely abiological components and artificial cells built from biological components and are driven by biological mechanisms. However, an artificial cell solely built to communicate chemically without carrying the machinery needed for self-preservation cannot remain active for long periods of time. What is needed is to begin integrating the pathways required for chemical communication with metabolic-like chemistry so that robust artificial systems can be built that better inform biology and aid in the generation of new technologies.
Interleaved centre clamped forward converter (ICCFC) for wide input voltage range applications
Authors: Veeraraghavalu Rajini , Dheeraj Alagu
Published: September 2019

A new interleaved centre clamped forward converter for high current applications is proposed. It is a series input and series output structure with common active clamp reset branch. In the proposed converter, both the high input voltage stress and output current stress are reduced. The converter comprises of two active clamp forward converters with one common centre clamp reset circuit and the series output comprises of a current double rectifier (CDR) with self‐driven synchronous rectifier (SDSR). The capacitor divider at the input reduces the switching stress due to input voltage. The common centre clamp circuit enables the transformer core reset without any additional circuit and enables zero volt switching. The SDSR‐based CDR reduces burden on the secondary side of the transformer by an additional current sharing. Extended duty cycle beyond 50% is achieved. Overall reduction in the size of magnetic components with reduced part count and high‐power density is attained. Prototype for 50 W with input voltage in the range of 50—200 V, 5 V/10 A output at 100 kHz was developed. The experimental results match the theoretical investigations.
One approach to the study of gas pricing based on gas supply systems modelling (the case of Northeast Asia)
Authors: Popov Sergei P. , Maksakova Darya V.
Published: September 2019

The article deals with the approach to gas pricing analysis based on the use of optimization models of gas supply systems. The object of the study is the Northeast Asian gas market. The model of the excessive gas supply system in Northeast Asia is described. The primal problem of the model is to minimize the sum of gas production and transportation costs under the infrastructure constraints. The solutions to the primal problem are the volumes of gas produced in each production point and transported via each route. The solutions to the dual problem (dual variables or shadow prices) are node prices in the points of gas supply system, the producers’ rent and the transporters’ rent. It is highlighted that the dual analysis plays an important role. It allows evaluating price relations between the points of gas supply system, identifying export routs characterized by the highest rent, evaluating the competitiveness of suppliers in the different scenarios of technological development, energy policy and market environment. The analytical capacities of the dual analysis are illustrated by the study of the impact of “unconventional” gas development in the importing countries on the Northeast Asian gas market environment. When the costs of unconventional gas production rise, gas trade patterns change, more competitive players enter the market, and gas prices in all consumption points as well as producers’ rents increase. It is concluded that if importers seek to lower import dependency while keeping the same price level, they have to lower the costs of unconventional gas production by technological development and/or to subsidize the industry to make it more competitive.
Application the differential evolution for solving the problem of minimizing the power shortage of electric power systems
Authors: Iakubovskii D.V. , Krupenev D.S. , Boyarkin D.A.
Published: September 2019

Based on the experience of domestic and foreign researchers, it is known that there are various mathematical models, software systems, and optimization methods used to solve the set tasks for assessing the resource adequacy of electric power systems (EPS). However, the continuous development of EPS leads to the complication and integration of systems against the background of which it becomes necessary to take into account an increasing number of its elements and parameters in one task. Thus, for more effective (in terms of speed and accuracy) solutions of modified models, it is required to analyze and search the most appropriate set of optimization methods. In this connection, the purpose of this study is to analyze the applicability and the effectiveness of applying the method of differential evolution and gradient optimization methods for the model of minimizing the power deficit, which should be also compared. The article considers the analysis of the results of the work that optimization methods, studies were conducted on a test isolated EPS, with various tuning parameters. As a result, it was confirmed that these methods could be used to solve the problem. From the point of view of accuracy and resources expended on calculations, the most efficient among the implemented methods was the method of differential evolution, which was confirmed by numerical experiments on the small systems.
Prediction of the power shortage in the electric power system by means of regression analysis by machine learning methods
Authors: Boyarkin D.A. , Krupenev D.S. , Iakubobsky D.V.
Published: September 2019

Modern electricity consumers place increasingly high demands on the level of reliability of power supply and, correspondingly, the reliability of electric power systems (EPS). These requirements should be directly addressed in the EPS development planning tasks. To this end, the evaluation of the level of EPS reliability is performed by employing software and computer systems that have various methods of reliability evaluation implemented therein. Among the variety of methods for identifying reliability indicators to evaluate resource adequacy the most appropriate one is the Monte Carlo method (the method of statistical tests): it enables to perform calculations within a reasonable time with the required accuracy, while the calculation of complex EPS-like systems by means of analytical methods proves impossible because of the large dimensionality of the problem. However, even when using the Monte Carlo method, the difficulties arise as well, namely the problem of the need to reproduce a large number of random states of the simulated EPS and the calculation of the operating mode of each of them. There are several ways to reduce the overall calculation time by either efficient random number generators and optimizers or alternative methods of the calculation of operating modes. The article deals with the issue of bringing up to date the method behind reliability calculation that makes use of the Monte Carlo method. We propose to use regression analysis methods when calculating operating modes of random states of the EPS. To this end, we adopt the support-vector machine and the random forest method. Experimental studies covered in the article attest to the efficiency of the new method, for the 24-node system IEEE RTS-96 the calculation speed has been increased by almost a factor of 4 while maintaining accuracy.
The Markov Chain of Energy Carryover Reserves in Models of Power Supply Reliability in Remote
Authors: Gubiy Elena
Published: September 2019

We consider mathematical models for analyzing the energy supply reliability of isolated systems and propose a three-level complex of nested models. The lower level represents the model of functioning of the energy supply system during the period under review. The second level is a model of the energy supply reliability analysis. This analysis is based on multiple simulations of functioning of the energy supply system in randomly formed conditions. The energy sources demand and supply, as well as the amount of carryover reserves of energy in storage, are assumed to be random values. To simulate functioning, the values of energy demand and production are formed using the Monto-Carlo method following their laws of probability. The random value of the carryover reserves is formed using the algorithm that generates the Markov sequence of these reserves. The upper level is represented by the model for selecting the optimal composition of the means ensuring reliability, i.e. energy reserves in the energy production and storage capacity. It was revealed that the algorithm for generating the random value of the energy sources carryover reserves yields the homogenous Markov sequence. Sufficient conditions for uniqueness of the stationary state were determined. Based on the experimental calculations, we estimated the number of iterations required to reach the stationary ergodic state.
The algorithm of constructor and technological
Authors: Potapov V.V. , Kolmakov V.P. , Chebotnyagin L.M.
Published: September 2019

On the basis of the pulse-pressure model of the velocity-induced de-formation of metal pipes proposed by the authors [1] the expanding plas-ma channel of an electric spark, the influence of the collision angle and the contact point speed on the quality of welding of pipes with a tube grid of a heat exchanger were investigated. An algorithm for estimating welding zones is proposed. The applicability of the algorithm is tested on pairs of pipe made of alloy AD1 + tube made of alloy AMg6.
Systemic aspects of the energy complex based on coal TPP
Authors: Fedorova Natalia
Published: September 2019

The paper is devoted to study of energy-technological complex (ETC) based on coal-powered TPP using methods of system analysis. The concept of the full-cycle ETC is presented. The zonal structure of ETC is considered. The place of ETC in the systematical classification is determined. The interpretation of system-wide principles is investigated applied to the TPP and ETC. The application of system analysis methods allows to predict the directions of ETC development.
Prospects of Application of Dual-Fuel Combined Cycle Gas Turbine Units
Authors: Borush Olesya , Shchinnikov Pavel , Zueva Anna
Published: September 2019

Dual-fuel combined cycle gas turbine units, including power units on the parallel scheme with predominant coal combustion are considered in the paper. The basic equations for determining the energy efficiency of dual-fuel combined-cycle power units are described. The interdependence of the efficiency of the gas turbine and steam turbine parts of the combined-cycle plant for the efficiency of the combined-cycle plant with a variable binary coefficient is presented. It is shown that 55-56% efficiency is achievable for parallel type combined cycle gas turbine units T with predominant solid fuel combustion on the basis of this interdependence between efficiency and binary coefficient. Comparison of competitiveness in the ratio of fuel prices for gas / coal with traditional coal technology and theoretical rejected combined cycle gas turbine units with an efficiency of 60% for dual-fuel combined cycle gas turbine units with the implementation of the Rankine cycle for subcritical (13 MPa) and supercritical (24 MPa) steam parameters is carried out. It is shown that the dual-fuel combined cycle gas turbine units are preferable to traditional coal steam turbine power units in the case when the ratio of the price of fuel does not exceed 5, binary rejected combined cycle gas turbine units, when the ratio of the prices by more 0,5.
Natural gas intracyclic attachment for energy generating unit based on gas turbine plant
Authors: Kalashnikov Dmitriy , Borisov Yuriy , Kalashnikova Elizaveta
Published: September 2019

In this article, problems of effectiveness increasing in complex power supply are considered. Disadvantages of centralized power engineering and advantages of power engineering capabilities organization in immediate consumer proximity are presented. Consumer needs satisfaction in electricity, heat supply and cold supply are offered to be realized by conversion of district and quarter boiler houses to trigeneration stations, which are based on gas turbine plants units. In this research, solutions of problem related to lack of fuel gas pressure for gas turbine engine power, which is included in gas turbine plant of trigeneration stations, are suggested. As a result, after considering possible variants of fuel gas pressure increasing, it was decided that there is a perspective of using fuel gas intracyclic compression attachment. Its operating principle involves organization of main steam extraction in heat cycle for booster compressor drive, which compresses fuel gas before its transfer to combustor of gas turbine plant. Results of gas compressor and drive steam turbine design are presented. These parts are included in fuel gas intracyclic compression attachment in specific unit of gas turbine plant. Also, general recommendations about new compressor and turbine stages design for any other units of gas turbine plant are pointed. Further, in the article, two variants of thermal circuit, based on gas turbine plant, are suggested. The first one is a circuit with hot water boiler, where exhaust gas recuperation after turbine is carried out for producing steam, related to fuel gas intracyclic compression attachment demands, and heat system water heating for consumer heat supply system. The second variant involves development of typical gas turbine plant unit in power station with exhaust boiler. There fuel gas intracyclic compression attachment is activated by steam work after exhaust boiler. Then, variants of diagram are compared between each other. Also advantages and disadvantages each of them are considered.