bluuebunny/crossref_metadata_2025 huggingface dataset:
Periodic nanostructures: preparation, properties and applications
Authors: Yin Hang , Xing Kaijian , Zhang Yurou , Dissanayake D. M. Aradhana S. , Lu Ziyang , Zhao Haitao , Zeng Zhiyuan , Yun Jung-Ho , Qi Dong-Chen , Yin Zongyou
Published: April 2021

This review has summarized and discussed the recent advances of periodic nanostructures, consisting of multiple identical nano units/components periodically arranged in good order, from their preparation and properties to applications.
Atomically precise graphene nanoribbons: interplay of structural and electronic properties
Authors: Houtsma R. S. Koen , de la Rie Joris , Stöhr Meike
Published: April 2021

On-surface synthesized atomically precise graphene nanoribbons are promising candidates for use in future devices. This article reviews atomically precise graphene nanoribbons, in particular focusing on their electronic properties.
Correlation between the feed composition and membrane wetting in a direct contact membrane distillation process
Authors: Lim Joowan , Son Kwang Pyo , Kang Seung Mo , Park Jeongwon , Min Sojin , Cho Hyeongrak , Kim Seung-Hyun , Lee Sangho , Chae Soryong , Park Pyung-Kyu
Published: April 2021

Membrane wetting in membrane distillation was accelerated by inorganics and hydrophilic organics. The wetting by ozonated humic acids was enhanced with an increase in the ozone contact time.
Marine alkaloids as bioactive agents against protozoal neglected tropical diseases and malaria
Authors: Tempone Andre G. , Pieper Pauline , Borborema Samanta E. T. , Thevenard Fernanda , Lago Joao Henrique G. , Croft Simon L. , Anderson Edward A.
Published: April 2021

This Review discusses the isolation and bioactivity of marine alkaloids against protozoan parasite diseases, and chemical syntheses that enable the further development of these scaffolds as drug leads.
A new 8-oxo-7,8-2′deoxyguanosine nanoporous anodic alumina aptasensor for colorectal cancer diagnosis in blood and urine
Authors: Pla Luis , Sancenón Félix , Martínez-Bisbal M. Carmen , Bañuls Celia , Estañ Nuria , Botello-Marabotto Marina , Aznar Elena , Sáez Guillermo , Santiago-Felipe Sara , Martínez-Máñez Ramón
Published: April 2021

A new 8-oxo-dG sensor consisting of a nanoporous material capped with an aptamer is presented and validated in real serum and urine samples, with LODs ranging from 1 to 50 nM and excellent sensitivity (96/100%) and specificity (80/100%) in 60 min.
Cascade synthesis of 2,4-disulfonylpyrroles by the sulfonylation/[2 + 3]-cycloaddition reactions of gem-dibromoalkenes with arylsulfonyl methyl isocyanides
Authors: Salehi Parvin , Tanbakouchian Zahra , Farajinia-Lehi Noushin , Shiri Morteza
Published: April 2021

An efficient cascade reaction involving sulfonylation and [2 + 3]-cycloaddition reactions of gem-dibromoalkenes with arylsulfonyl methyl isocyanides was described for the synthesis of 3-aryl-2,4-disulfonyl-1H-pyrroles.
Selective sorption of PAHs from TX100 solution by resin SP850: effects of TX100 concentrations and PAHs solubility
Authors: Zeng Yaxiong , Zhang Ming , Lin Daohui , Yang Kun
Published: April 2021

Quantitative correlations of S* and CopTX100, capable for predicting selective sorption of PAHs by SP850 from TX100 solution were established.
Iron oxide coated hollow poly(methylmethacrylate) as an efficient adsorption media for removal of arsenic from water
Authors: Dutta Dhiraj , Borah J. P. , Puzari Amrit
Published: April 2021

Adsorption of arsenic onto iron-based adsorption media has been established as a convenient method for the removal of arsenic from contaminated water.
Unravelling charge-transfer in Pd to pyrrolic-N bond for superior electrocatalytic performance
Authors: Sahoo Lipipuspa , Mondal Sanjit , Gloskovskii A. , Chutia Arunabhiram , Gautam Ujjal K.
Published: April 2021

Experimental and theoretical investigations reveal that pyrrolic nitrogen in N-doped graphene induces significant charge-transfer from Pd to graphene to improve electrochemical oxygen reduction efficiency of Pd.
A versatile and low-toxicity material for photothermal therapy in deeper tissues
Authors: Jin Liguo , Wang Yinyin , Ouyang Huan , Liu Yu , Zhu Zhenling , Wang Shuhua , Xin Hongbo , Wang Xiaolei
Published: April 2021

As a proof of concept, we demonstrate the regulative effect of external NIR defined TPUU on intestinal flora. The result implies that TPUU can go beyond the realm of ordinary photosensitizers to realize therapeutic effect in deeper tissues.
Design and development of a prototype for specific naked-eye detection of blister and nerve agents
Authors: Kumar Vinod
Published: April 2021

We designed a prototype technique in the form of a portable chemical weapon detection kit to facilitate rapid and onsite detection. A range of unique chemical probes were condensed to achieve specific chromo-fluorogenic detection and discrimination of blister and nerve agents.
Introduction to bioanalytical sensors for real-world applications
Authors: Mace Charles , Morrin Aoife , Whelan Rebecca
Published: April 2021

Charles Mace, Aoife Morrin and Rebecca Whelan introduce this Analytical Methods themed issue on bioanalytical sensors for real-world applications.
Exactly solvable 1D model explains the low-energy vibrational level structure of protonated methane
Authors: Rawlinson Jonathan I. , Fábri Csaba , Császár Attila G.
Published: April 2021

We present a simple, one-dimensional, exactly solvable model which explains not one but the first 60 vibrational eigenstates of the 6-atom molecule CH5+.
Doping and adsorption mechanism of the element Y modifying the primary Al13Fe4phase in hypereutectic Al–Fe alloys from first-principles
Authors: Pang Na , Shi Zhiming , Wang Cunquan , Wu Yuting , Zhang Jiangchao , Sun Jiang
Published: April 2021

The modification mechanism of the element Y on the primary Al13Fe4phase was investigated using experimental and theoretical calculations.
Various amide-derived ligands induced five octamolybdate-based metal–organic complexes: synthesis, structure, electrochemical sensing and photocatalytic properties
Authors: Wang Xiuli , Li Lei , Wang Xiang , Zhang Yuqing
Published: April 2021

Five octamolybdate-based complexes with diverse architectures employing three new amide-derived organic ligands can be used as promising electrochemical sensors and photocatalysts.
Assembly, structures and properties of polyoxometalate-based supramolecular complexes involving in situ transformation of single-branch N-donor cyano ligands
Authors: Wang Xiang , Li Yunhui , Zhang Tong , Ma Sijia , Wang Xiuli
Published: April 2021

A series of polyoxometalate-based supramolecular complexes were prepared with in situ transformation of single-branch N-donor cyano ligands, exhibiting diverse structures and good electrocatalytic and photocatalytic properties.
The primary photolysis dynamics of oxalate in aqueous solution: decarboxylation
Authors: Thøgersen Jan , Weidner Tobias , Jensen Frank
Published: April 2021

Dissociation and electron detachment of oxalate predominantly produces CO2 molecules with only minor yields of CO2˙− radical anions. The CO2 formation is accompanied by the ejection of electrons.
Short-range structure, the role of bismuth and property–structure correlations in bismuth borate glasses
Authors: Varsamis C. P. E. , Makris N. , Valvi C. , Kamitsos E. I.
Published: April 2021

A new method is presented for the quantification of the short-range structure of borate glasses using infrared reflectance spectroscopy.
Size of the hydrogen bond network in liquid methanol: a quantum cluster equilibrium model with extensive structure search
Authors: Teh Soon , Hsu Po-Jen , Kuo Jer-Lai
Published: April 2021

The dominant cluster size in liquid methanol was explored by quantum cluster equilibrium theory associated with an extensively searched structure database.
Assessment of the DNA partial specific volume and hydration layer properties from CHARMM Drude polarizable and additive MD simulations
Authors: Savelyev Alexey
Published: April 2021

A novel computational approach to compute DNA's partial specific volume and its hydration layer properties from polarizable and fixed-charged MD simulations addresses approximations in existing methodologies.
Modulating formation rates of active species population by optimizing electron transport channels for boosting the photocatalytic activity of a Bi2S3/BiO1−xCl heterojunction
Authors: Zou Zhongwei , Qin Hailan , Xia Huan , Xia Dongsheng , Li Dongya , Xu Haiming
Published: April 2021

Bi2S3/BiO1−xCl heterojunction with OVs can regulate PS to produce ASP through optimizing ETCs and modulating ASP formation rates by cooperation of OVs with IEF to hinder the invalid consumption of ASP and significantly enhance the catalytic efficiency.
Graphitic nitrogen in carbon catalysts is important for the reduction of nitrite as revealed by naturally abundant15N NMR spectroscopy
Authors: Chen Zheng , Jaworski Aleksander , Chen Jianhong , Budnyak Tetyana M. , Szewczyk Ireneusz , Rokicińska Anna , Dronskowski Richard , Hedin Niklas , Kuśtrowski Piotr , Slabon Adam
Published: April 2021

Directly-excited15N ssNMR spectroscopy at natural15N abundance is generally capable of providing information on N-doped carbon materials and therefore of elucidating the catalytic activity at the atomic level.
Emerging investigator series: chemical and physical properties of organic mixtures on indoor surfaces during HOMEChem
Authors: O'Brien Rachel E. , Li Ying , Kiland Kristian J. , Katz Erin F. , Or Victor W. , Legaard Emily , Walhout Emma Q. , Thrasher Corey , Grassian Vicki H. , DeCarlo Peter F. , Bertram Allan K. , Shiraiwa Manabu
Published: April 2021

Organic films on indoor surfaces serve as a medium for reactions and for partitioning of semi-volatile organic compounds and thus play an important role in indoor chemistry.
A novel WH-flags method based on reducing the acidity of molybdenum blue (MB) reaction and stabilization by EDTA for quickly detecting phosphorus in water
Authors: Xiong Yanghui , Wang Yuan-Bo , Pei De-Sheng
Published: April 2021

A novel method (WH-flags) to quickly measure both reactive P and total P based on reducing the acidity of the molybdenum blue (MB) reaction and then stabilizing it with EDTA was developed in this study.
Inorganic nanoparticles as food additives and their influence on the human gut microbiota
Authors: Gangadoo Sheeana , Nguyen Huu , Rajapaksha Piumie , Zreiqat Hala , Latham Kay , Cozzolino Daniel , Chapman James , Truong Vi Khanh
Published: April 2021

The use of various aspects of food processing, including the direct inclusion of nano-additives, are rapidly increasing in the field of nanotechnology to enhance the desired qualities in food production, use and storage.
Eco-friendly antisolvent enabled inverted MAPbI3 perovskite solar cells with fill factors over 84%
Authors: Cui Yuying , Wang Shurong , Li Chengbo , Wang Aili , Ren Jing , Yang Chenguang , Chen Bin , Wang Zhen , Hao Feng
Published: April 2021

A green co-antisolvent of propyl acetate and diethyl ether is induced to adjust the degree of supersaturation during the perovskite deposition, enabling a power conversion efficiency of 20.61% with a fill factor of 84.49% for inverted solar cells.
Microfluidic enhancement of self-assembly systems
Authors: Khoeini Davood , Scott Timothy F. , Neild Adrian
Published: April 2021

A review of the advances in supramolecular chemistry achieved by the application of continuous and dispersed microfluidic approaches.
Goodbye fouling: a unique coaxial lamination mixer (CLM) enabled by two-photon polymerization for the stable production of monodisperse drug carrier nanoparticles
Authors: Erfle Peer , Riewe Juliane , Bunjes Heike , Dietzel Andreas
Published: April 2021

Coaxial flow injection and mixing of solvent and antisolvent flows prevent contact of the lipid solution with microchannel walls and enable stable continuous precipitation of monodisperse nanoparticles in the order of 150 nm and below.
Synthesis and superconductivity of new TiNiSi-type equiatomic germanide ThIrGe
Authors: Xiao Guorui , Zhu Qinqing , Cui Yanwei , Liu Bin , Wu Jifeng , Li Baizhuo , Wu Siqi , Cao Guang-han , Ren Zhi
Published: April 2021

A new germanide ThIrGe has been synthesized and characterized by X-ray diffraction, transmission electron microscopy, electrical resistivity, magnetic susceptibility and thermodynamic measurements.
1,3,6,8-Pyrenetetrasulfonic acid anchored doping to prepare solution-processable polyaniline for electrochromic supercapacitors
Authors: Li Man , Tao Chongxin , Zhu Guanqun , Zhang Huijun , Lin Baoping , Zhang Xueqin , Yang Hong , Guo Lingxiang , Sun Ying
Published: April 2021

A new strategy to improve the ion transmission and stability of ESCs by introducing an anchored dopant during the polymerization of PANI has been proposed.
A roadmap for metagenomic enzyme discovery
Authors: Robinson Serina L. , Piel Jörn , Sunagawa Shinichi
Published: April 2021

Shotgun metagenomic approaches to uncover new enzymes are underdeveloped relative to PCR- or activity-based functional metagenomics. Here we review computational and experimental strategies to discover biosynthetic enzymes from metagenomes.
An ion-selective crown ether covalently grafted onto chemically exfoliated MoS2 as a biological fluid sensor
Authors: Stergiou Anastasios , Stangel Christina , Canton-Vitoria Ruben , Kitaura Ryo , Tagmatarchis Nikos
Published: April 2021

The preparation and assessment of a crown ether covalently grafted onto MoS2 as an ion-selective electrode for sodium ions in biological fluids is presented.
Carbogenic π-conjugated domains as the origin of afterglow emissions in carbon dot-based organic composite films
Authors: Zhai Lu , Ren Xiao-Ming , Xu Qiang
Published: April 2021

This study reports the carbon core-dominated afterglow emission of CD-based composite films with readily tunable emissions and highlights the advantage of using aromatic precursors by enlarging the π-conjugated domains in the carbogenic core.
Multimetallic nanostructures for electrocatalytic oxygen evolution reaction in acidic media
Authors: Kim Taekyung , Kim Byeongyoon , Kwon Taehyun , Kim Ho Young , Kim Jin Young , Lee Kwangyeol
Published: April 2021

In this review, the authors highlighted the recent progress on the noble metal-based multimetallic electrocatalysts toward the oxygen evolution reaction under acidic condition.
Oxidative α-acyloxylation of acetals with cyclic diacyl peroxides
Authors: Vil' Vera A. , Gorlov Evgenii S. , Yu Bing , Terent'ev Alexander O.
Published: April 2021

Selective functionalization of the non-activated acetal α-position with formal retaining of the acetal fragment was realized using cyclic diacyl peroxides.
Preparation and application of methimazole molecularly imprinted polymer based on silver-loaded dendritic fiber-type silica
Authors: Hongtao Chu , Jiaqi Chen , Dong Yao , Miao Yu , Qing Lin , Jingru Zhang
Published: April 2021

Dendritic fiber-type silica (KCC-1) has attracted the attention of researchers because of its unique three-dimensional radial structure and high specific surface area.
Fluorinated MIL-101 for carbon capture utilisation and storage: uptake and diffusion studies under relevant industrial conditions
Authors: Sáenz Cavazos Paola A. , Díaz-Ramírez Mariana L. , Hunter-Sellars Elwin , McIntyre Sean R. , Lima Enrique , Ibarra Ilich A. , Williams Daryl R.
Published: April 2021

MIL-101(Cr)-4F(1%) proved to be a stable material under moist conditions compared to other industrial MOFs, with facile regeneration under relevant industrial conditions; plus the introduction of small amounts of water enhances the diffusion of CO2.
Experimental and surface morphological studies of corrosion inhibition on carbon steel in HCl solution using some new hydrazide derivatives
Authors: Fouda Abd El-Aziz S. , Abd El-Maksoud Samir A. , El-Sayed Elsherbiny H. , Elbaz Hazem A. , Abousalem Ashraf S.
Published: April 2021

The inhibitory effect of three newly synthesized hydrazide derivatives on carbon steel corrosion in hydrochloric acid showed better inhibition efficiency (97.5%) and their inhibition mechanism is presented.
Jacket temperature regulation allowing well-defined non-adiabatic lab-scale solution free radical polymerization of acrylates
Authors: Edeleva Mariya , Marien Yoshi W. , Van Steenberge Paul H. M. , D'hooge Dagmar R.
Published: April 2021

Conventional batch solution free radical polymerization of n-butyl acrylate with thermal initiators such as AIBN is known to be strongly exothermic and influenced by highly activated side reactions such as backbiting and β-scission.
Heterocyclic group transfer reactions with I(iii) N-HVI reagents: access to N-alkyl(heteroaryl)onium salts via olefin aminolactonization
Authors: Tierno Anthony F. , Walters Jennifer C. , Vazquez-Lopez Andres , Xiao Xiao , Wengryniuk Sarah E.
Published: April 2021

Complex N-alkyl (heteroaryl)onium salts are accessed via heterocyclic group transfer reactions of N-ligated I(iii) reagents with alkenoic acids. The reactions proceed in excellent yields, under mild conditions, and with broad substrate scope.
Stretching [8]cycloparaphenylene with encapsulated potassium cations: structural and theoretical insights into core perturbation upon four-fold reduction and complexation
Authors: Rogachev Andrey Yu. , Zhou Zheng , Liu Shuyang , Wei Zheng , Schaub Tobias A. , Jasti Ramesh , Petrukhina Marina A.
Published: April 2021

Structural and theoretical analysis of a highly-charged [8]cycloparaphenylene reveals drastic elliptic distortion and unique metal encapsulation of the macrocyclic host upon reduction.
Light-driven release of cucurbit[8]uril from a bivalent cage
Authors: de Vink Pim J. , van der Hek Tim , Brunsveld Luc
Published: April 2021

Photo-switchable supramolecular systems offer unique entries to control biomolecular process, as illustrated via the light-induced release of cucurbit[8]uril from a bivalent cage molecule and its subsequent activation of the caspase-9 enzyme.
Bidirectional energy & fuel production using RTO-supported-Pt–IrO2loaded fixed polarity unitized regenerative fuel cells
Authors: Gayen Pralay , Liu Xinquan , He Cheng , Saha Sulay , Ramani Vijay K.
Published: April 2021

A fixed-polarity unitized regenerative fuel cell using Pt–IrO2/RTO as a bifunctional OER- and HOR-electrocatalyst as an anode exhibits high PGM-mass-specific activity and high round-trip efficiency (40.2% at 1 A cm−2).
Metal–organic framework mediated nickel doped copper ferrite for superior lithium storage
Authors: Majeed Muhammad K. , Saleem Adil , Majeed M. Umar , Lotfi Mina , Hussain M. Muzammal , Gong Hongyu
Published: April 2021

A metal–organic framework mediated nickel doped ferrite composite with superior lithium storage properties was successfully synthesized. A DFT study also elucidated the reaction pathway for Cu1−xNixFe2O4.
Lanthanum bismuth oxide photocatalysts for CO2reduction to CO with high selectivity
Authors: Wang Yingting , Zhang Yuanming , Chen Yong , Li Zhaosheng , Zou Zhigang
Published: April 2021

Lanthanum bismuth oxide photocatalysts (La0.225Bi0.775O1.5, La0.6Bi0.4O1.5and La1.08Bi0.92O3.03) were found to exhibit activity for CO2reduction to CO with high selectivity (over 98%).
Highly dispersed Ru nanoparticles on a bipyridine-linked covalent organic framework for efficient photocatalytic CO2reduction
Authors: Liu Ziling , Huang Yaqi , Chang Shuqing , Zhu Xiaoli , Fu Yanghe , Ma Rui , Lu Xinqing , Zhang Fumin , Zhu Weidong , Fan Maohong
Published: April 2021

Highly dispersed Ru nanoparticles are confined in a photosensitizing bipyridine-linked covalent organic framework to construct Ru@TpBpy composites, exhibiting significantly enhanced activities for CO2reduction under visible-light irradiation.
Role of solvation site segmental dynamics on ion transport in ethylene-oxide based side-chain polymer electrolytes
Authors: Bennington Peter , Deng Chuting , Sharon Daniel , Webb Michael A. , de Pablo Juan J. , Nealey Paul F. , Patel Shrayesh N.
Published: April 2021

Ionic conductivity is governed primarily by the segmental mobility of the side-chain ethylene oxide units which form effective solvation sites, rather than system-wide dynamics.
Mechanistic insights into interfaces and nitrogen vacancies in cobalt hydroxide/tungsten nitride catalysts to enhance alkaline hydrogen evolution
Authors: Liu Huan , Wu Zi-Shan , Huang Ling , Zhang Bo-Wei , Yin Li-Chang , Xu Cheng-Yan , Zhen Liang
Published: April 2021

The kinetics of alkaline hydrogen evolution of Co(OH)2/c-WN1−x was synergistically promoted by Co(OH)2 that facilitated the adsorption and dissociation of H2O and c-WN1−x that accelerated hydrogen generation by optimizing ΔGH*.
Stoichiometrically driven disorder and local diffusion in NMC cathodes
Authors: Ashton Thomas E. , Baker Peter J. , Sotelo-Vazquez Carlos , Footer Charles J. M. , Kojima Kenji. M. , Matsukawa Takeshi , Kamiyama Takashi , Darr Jawwad A.
Published: April 2021

Neutron powder diffraction has uncovered major stoichiometry-driven structural differences in NMC cathodes otherwise obscured in lab-based X-ray powder diffraction. The atomic scale Li diffusion has also been probed by muon spin relaxation.
Time-dependent transformation routes of perovskites CsPbBr3 and CsPbCl3 under high pressure
Authors: Szafrański Marek , Katrusiak Andrzej , Ståhl Kenny
Published: April 2021

All-inorganic perovskites CsPbBr3 and CsPbCl3 undergo various types of transitions depending on the mode of pressure application. The importance of truly hydrostatic conditions for interpretation of structural and optical properties is discussed.
Mn-based oxides for aqueous rechargeable metal ion batteries
Authors: Gao Yaning , Yang Haoyi , Bai Ying , Wu Chuan
Published: April 2021

Mn-based oxides as promising materials for aqueous energy storage are desirable in view of their low-cost, eco-friendliness and high theoretical capacity.
Structural and electronic modulation of conductive MOFs for efficient oxygen evolution reaction electrocatalysis
Authors: Li Jiawen , Liu Peng , Mao Jianxin , Yan Jianyue , Song Wenbo
Published: April 2021

An overpotential of 300 mV (10 mA cm−2) and TOF of 1.943 s−1(η= 300 mV) for OER are achieved by structural and electronic modulation of conductive MOF. The electronic interaction between Ni–O4and Fe–O4enhances their intrinsic activity.
Controllable synthesis of ultrathin layered transition metal hydroxide/zeolitic imidazolate framework-67 hybrid nanosheets for high-performance supercapacitors
Authors: Liu Chunli , Bai Yang , Wang Ji , Qiu Ziming , Pang Huan
Published: April 2021

An ultrathin layered transition metal hydroxide/ZIF-67 hybrid structure was synthesized using Co2+ with Mn2+/Ni2+/Zn2+ ions as dopants for asymmetric supercapacitors.
Switching the resistive memory behavior from binary to ternary logicviasubtle polymer donor and molecular acceptor design
Authors: Pan Saihu , Zhu Zhiqiang , Yu Hang , Lan Weixia , Wei Bin , Guo Kunping
Published: April 2021

Subtle polymer donor and molecular acceptor design enables efficient solution-processed organic resistive switching memory
A lanthanide-functionalized covalent triazine framework as a physiological molecular thermometer
Authors: Gohari Derakhshandeh Parviz , Abednatanzi Sara , Bourda Laurens , Dalapati Sasanka , Abalymov Anatolii , Meledina Maria , Liu Ying-Ya , Skirtach Andre G. , Van Hecke Kristof , Kaczmarek Anna M. , Van Der Voort Pascal
Published: April 2021

Development of a sensitive, reusable, water-dispersible and non-toxic lanthanide-functionalized covalent triazine framework as a molecular thermometer for biological thermometric applications.
Paracrine interleukin-8 affects mesenchymal stem cells through the Akt pathway and enhances human umbilical vein endothelial cell proliferation and migration
Authors: Wang Lulu , Li Yongtao , Zhang Xiaodong , Liu Na , Shen Shiyang , Sun Shizhu , Jiang Yang , Li Penghui , Jin Haifeng , Shen Lei
Published: April 2021

Interleukin-8 (IL-8) promotes cell homing and angiogenesis, but its effects on activating human bone marrow mesenchymal stem cells (BMSCs) and promoting angiogenesis are unclear. We used bioinformatics to predict these processes. In vitro, BMSCs were stimulated in a high-glucose (HG) environment with 50 or 100 μg/ml IL-8 was used as the IL-8 group. A total of 5 μmol/l Triciribine was added to the two IL-8 groups as the Akt inhibitor group. Cultured human umbilical vein endothelial cells (HUVECs) were cultured in BMSCs conditioned medium (CM). The changes in proliferation, apoptosis, migration ability and levels of VEGF and IL-6 in HUVECs were observed in each group. Seventy processes and 26 pathways were involved in vascular development, through which IL-8 affected BMSCs. Compared with the HG control group, HUVEC proliferation absorbance value (A value), Gap closure rate, and Transwell cell migration rate in the IL-8 50 and IL-8 100 CM groups were significantly increased (P<0.01, n=30). However, HUVEC apoptosis was significantly decreased (P<0.01, n=30). Akt and phospho-Akt (P-Akt) protein contents in lysates of BMSCs treated with IL-8, as well as VEGF and IL-6 protein contents in the supernatant of BMSCs treated with IL-8, were all highly expressed (P<0.01, n=15). These analyses confirmed that IL-8 promoted the expression of 41 core proteins in BMSCs through the PI3K Akt pathway, which could promote the proliferation and migration of vascular endothelial cells. Therefore, in an HG environment, IL-8 activated the Akt signaling pathway, promoted paracrine mechanisms of BMSCs, and improved the proliferation and migration of HUVECs.
Statistical Learning and the Effect of Starting Small in Developmental Dyslexia
Authors: Dobó Dorottya , Lukics Krisztina Sára , Szőllősi Ágnes , Németh Kornél , Lukács Ágnes
Published: April 2021

Purpose

Impairments in statistical learning abilities of individuals with developmental dyslexia (DD) have been demonstrated in word segmentation and in visual artificial grammar learning (AGL) tasks, but so far, little attention has been devoted to the AGL abilities of this population in the acoustic verbal domain. This study aimed to test whether adolescents with dyslexia have difficulties in extracting abstract patterns from auditory sequences of nonsense syllables based on a finite state grammar relative to typically developing (TD) peers. We also tested whether incremental presentation of stimuli of different lengths (starting small) has a facilitating effect on learning complex structures in dyslexia (and in TD) as opposed to presenting strings in random order.

Method

Thirty-one adolescents with DD and 31 age-matched control participants completed an AGL task. Participants passively listened to acoustic sequences of nonsense syllables generated by an artificial grammar in the training phase. In the test phase, they were presented with pairs of novel grammatical and nongrammatical sequences and were required to decide which member of a sequence pair was more similar to the material heard during training.

Results

Performance levels and the proportion of learners were smaller in participants with DD than in the control group. While the starting small effect was nominally present both in performance levels and in the number of learners in participants with DD, but not in the group with TD, the presentation of strings in incremental order did not statistically improve learning performance in either group.

Conclusion

Our results suggest that (a) statistical learning of abstract sequences in the acoustic domain is less efficient in people with dyslexia than in TD controls and (b) while incremental presentation of stimuli of different length did not improve learning in our study, the observed pattern of results suggests that the effects of different training designs should be explored further in developmental disorders.
Hubble spectroscopy of LB-1: Comparison with B+black-hole and Be+stripped-star models
Authors: Lennon D. J. , Maíz Apellániz J. , Irrgang A. , Bohlin R. , Deustua S. , Dufton P. L. , Simón-Díaz S. , Herrero A. , Casares J. , Muñoz-Darias T. , Smartt S. J. , González Hernández J. I. , de Burgos A.
Published: April 2021

Context. LB-1 (alias ALS 8775) has been proposed as either an X-ray dim B-type star plus black hole (B+BH) binary or a Be star plus an inflated stripped star (Be+Bstr) binary. The latter hypothesis contingent upon the detection and characterization of the hidden broad-lined star in a composite optical spectrum.

Aims. Our study is aimed at testing the published B+BH (single star) and Be+Bstr (binary star) models using a flux-calibrated UV-optical-IR spectrum.

Methods. The Space Telescope Imaging Spectrograph (STIS) on board the Hubble Space Telescope (HST) was used to obtain a flux-calibrated spectrum with an accuracy of ∼1%. We compared these data with non-local thermal equilibrium (non-LTE) spectral energy distributions (SED) and line profiles for the proposed models. The Hubble data, together with the Gaia EDR3 parallax and a well-determined extinction, were used to provide tight constraints on the properties and stellar luminosities of the LB-1 system. In the case of the Be+Bstr model we adopted the published flux ratio for the Be and Bstr stars, re-determined the Teff of the Bstr using the silicon ionization balance, and inferred Teff for the Be star from the fit to the SED.

Results. The UV data strongly constrain the microturbulence velocity to ≲2 km s−1 for the stellar components of both models. We also find stellar parameters consistent with previous results, but with greater precision enabled by the Hubble SED. For the B+BH single-star model, we find the parameters (Teff, log(L/L⊙), Mspec/M⊙) of the B-type star to be (15 300 ± 300 K, 3.23−0.10+0.09, 5.2−1.4+1.8). For the Bstr star we obtain (12 500 ± 100 K, 2.70−0.09+0.09, 0.8−0.3+0.5), and for the Be star (18 900 ± 200 K, 3.04−0.09+0.09, 3.4−1.8+3.5). While the Be+Bstr model is a better fit to the He I lines and cores of the Balmer lines in the optical, the B+BH model provides a better fit to the Si IV resonance lines in the UV. The analysis also implies that the Bstr star has roughly twice the solar silicon abundance, which is difficult to reconcile with a stripped star origin. The Be star, on the other hand, has a rather low luminosity and a spectroscopic mass that is inconsistent with its possible dynamical mass.

Conclusions. We provide tight constraints on the stellar luminosities of the Be+Bstr and B+BH models. For the former, the Bstr star appears to be silicon-rich, while the notional Be star appears to be sub-luminous for a classical Be star of its temperature and the predicted UV spectrum is inconsistent with the data. This latter issue can be significantly improved by reducing the Teff and radius of the Be star, at the cost, however, of a different mass ratio as a result. In the B+BH model, the single B-type spectrum is a good match to the UV spectrum. Adopting a mass ratio of 5.1 ± 0.1, from the literature, implies a BH mass of ∼21−8+9 M⊙.
LoTSS jellyfish galaxies
Authors: Roberts I. D. , van Weeren R. J. , McGee S. L. , Botteon A. , Drabent A. , Ignesti A. , Rottgering H. J. A. , Shimwell T. W. , Tasse C.
Published: April 2021

Context. The cluster environment has a strong impact on galaxy star formation, as seen by the fact that clusters host proportionally more red, passive galaxies relative to the field. Ram pressure stripping may drive this environmental quenching by directly stripping cold gas from galactic disks. In some cases, ram pressure stripping gives rise to ‘jellyfish galaxies’, observed with clear ‘tentacles’ of stripped gas extending beyond the optical extent of the galaxy.

Aims. In this paper we present a large sample of jellyfish galaxies in low redshift clusters (z < 0.05), identified through 120−168 MHz radio continuum from the LOFAR Two-metre Sky Survey (LoTSS).

Methods. From a parent sample of 29 X-ray-detected SDSS galaxy clusters and their spectroscopic members, we visually identify 95 star-forming, LoTSS jellyfish galaxies with 144 MHz radio tails. Star formation rates (SFRs) and stellar masses are obtained for all galaxies from SED fits. For each jellyfish galaxy we determine the tail orientation with respect to the cluster centre and quantify the prominence of the radio tails with the 144 MHz shape asymmetry.

Results. After carefully accounting for redshift-dependent selection effects, we find that the frequency of jellyfish galaxies is relatively constant from cluster to cluster. LoTSS jellyfish galaxies are preferentially found at small clustercentric radius and large velocity offsets within their host clusters and have radio tails that are oriented away from the cluster centre. These galaxies also show enhanced star formation, relative to both ‘normal’ cluster galaxies and isolated field galaxies, but generally fall within the scatter of the L144 MHz − SFR relation.

Conclusions. The properties of the LoTSS jellyfish galaxies identified in this work are fully consistent with expectations from ram pressure stripping. This large sample of jellyfish galaxies will be valuable for further constraining ram pressure stripping and star formation quenching in nearby galaxy clusters. We show that LOFAR is a powerful instrument for identifying ram pressure stripped galaxies across extremely wide fields. Moving forward, we will push the search for jellyfish galaxies beyond this initial cluster sample, including a comprehensive survey of the galaxy group regime.
A three-player game analysis on industrial environmental pollution control
Authors: Hou Kexin
Published: April 2021

The environmental pollution of industrial enterprises has severely restricted the development of economy and society. In the face of serious industrial environmental pollution, this paper constructs a three-player game model including enterprises, government and the public, and conducts a balanced analysis on the interests of the three parties in enterprise environmental pollution control. The results show that the regulation effect of pollutant discharge punishment on industrial enterprises is better than that of pollution control subsidies, and the system with high fines and high subsidies will reduce the enthusiasm of enterprises to comply with regulations.
Marking the status and development of marine VOCs recovery technology
Authors: Ting Guo , Yuang Jiao , Yanbing Tang , Daohua Lu , Xianglei Kong , Jiubing Shen , Qingfeng Jiang
Published: April 2021

During the storage and transportation of crude oil, volatile organic vapors (VOCs) are generated. International organizations and relevant countries have formulated relevant regulations for VOCs emissions. This article introduces four kinds of oil and gas recovery technologies and their combined processes: absorption method, adsorption method, membrane separation method and condensation method. The advantages and disadvantages of different oil and gas recovery technologies are analyzed and the process performance is compared. It lists examples of the application of oil and gas recovery technology in ships, points out its shortcomings, and puts forward relevant suggestions for the research of marine VOCs recovery technology.
Analysis of chemical structure and characteristics of building materials based on element chemistry
Authors: Yanlong Zhao , Jitao Bai , Jiahe Liang , Zhang Simiao
Published: April 2021

Elements in accordance with a certain proportion and spatial arrangement constitute the microstructure of the building materials, which lead to a specific property and function in the macro. From the perspective of element chemistry, we divide common building materials into three categories: silicon-based building materials, carbon-based building materials and iron-based building materials. Then, with the knowledge of valence electron structure and electronic configuration, we systematically expound the three-element building materials system. According to that division mode, we explain the microstructural causes and macroscopic properties of the three-element building materials system through the valence bond theory, so as to provide references for the development and application of building materials.
Economic performance analysis of seismic isolation, energy dissipation, and traditional seismic structures
Authors: Jiang Shu-jiang , Yao Shun-zhong , Liu De-wen
Published: April 2021

The construction of a new countryside requires a compr hensive improvement in the building standards of villages and towns, and the seismic resistance of buildings in earthquake-prone areas has attracted much attention. Due to the backward economic development of villages and towns, the development of seismic isolation structure and energy dissipation structure is hindered. To build houses with better seismic performance, the economic efficiency of seismic isolation and energy dissipation structures has become a matter of close concern to the local people and the government. This article compares the economic differences between the original seismic structure, the base isolation structure, and the seismic damping structure from the costs incurred during the entire life cycle of the building, and provides economic reference for the new rural seismic isolation building.
Back analysis of pile and anchor retaining structure based on BOTDA distributed optical fiber sensing technology
Authors: Wang Xin , Luo Xie Hui , Long Wan xue , Jiang Bo
Published: April 2021

In order to understand the deformation law and internal force distribution characteristics of the pile-anchor retaining structure in deep foundation pit engineering, the stress of the pile-anchor retaining system in the process of foundation pit excavation was tested by using the distributed optical fiber sensing technology of BOTDA. It uses the supporting pile cloth to set up the strain cable to collect the strain from the excavation process to the stability of the foundation pit, which analyzes the stress and internal force distribution. The results show that the overall deformation of the foundation pit is small and in a stable state. It uses the monitoring strain energy to truly reflect the distribution and transmission law of the pile internal force. It is shown that the bending moment is the maximum at the action position of the anchor cable on the pile anchor structure and 2.5m below the bottom of the pit. The design needs to reinforce the construction of such locations. At the same time, the distribution form of earth pressure calculated in reverse is different from the conventional one. When there are multiple rows of prestressed anchor cables, the earth pressure applied on the support is less than the calculated value of classical earth pressure theory. This pile anchor structure design theory and engineering application has reference value.
Research on Characteristics and Toughness of High Temperature Heat Wave in Jing’an District, Shanghai
Authors: Gong Yimeng , Gao Wei , Gou Aiping
Published: April 2021

Affected by global changes, extreme weather has become more frequent in recent years, which has had a huge impact on the urban environment. As a collection of human civilization achievements, cities have created vitality and prosperity, but with the advancement of urbanization, huge risks have emerged in the urban environment. The resilience of a city is like the immune system of a city. It is an indispensable part of urban construction. It can enable the urban environment to effectively cope with, alleviate, and eliminate risks to ensure the healthy development of the city. Starting from the definition of resilient city, this article discusses the assessment methods of resilient cities, the current construction of resilient cities, the high temperature characteristics of Jing’an District, and the spatial characteristics of Jing’an District.
Research on New Urban Virtual Power Plant System
Authors: Li Shupeng , Yu Guangyao , Zhou Xu , Xing Nannan
Published: April 2021

With the continuous development of energy industry, the contradiction between supply and demand is becoming increasingly serious. In order to coordinate the contradiction between power system and distributed renewable energy, and deal with many challenges brought by new energy power to power system. We should fully exploit the value and benefits of new energy for power system and users. In this paper, a new urban virtual power plant system is proposed, which integrates distributed generation units, energy storage system and controllable load. It uses advanced data communication and coordinated control technology to realize the organic overall regulation and control of various types of distributed energy and load, to reduce the challenge of randomness and volatility of high penetration distributed generation to power grid operation and dispatching, and to alleviate the contradiction between supply and demand.
R&D investment intensity, green energy technology innovation and construction firm growth performance
Authors: Liu Huanxing
Published: April 2021

Based on the data of listed construction companies in the jewelry manufacturing industry in 1994 from 2014 to 2017, this article uses the generalized least squares method to analyze the relationship between green energy technology innovation, construction enterprises’ growth performance and R&D investment intensity, and explores the impact of green energy technology innovation on construction enterprises’ growth performance and analyzes the moderating effect of R&D investment intensity. The empirical results show that green energy technological innovation has a significant positive impact on construction enterprises’ growth performance. The intensity of R&D investment has a significant negative regulatory effect on the relationship between green energy technological innovation and construction enterprises’ growth performance.
Research on the influence of government subsidies on the growth of energy-based enterprises——The mediating effect of enterprise R&D investment
Authors: Qin Yue , Zhixuan Wu
Published: April 2021

Energy is the material basis for the survival and development of human society. It is of great significance for energy enterprises to obtain government subsidies, improve technological innovation ability, improve energy efficiency and realize sustainable development. Based on the data of listed energy companies in China, this paper examines the relationship between government subsidies, R & D investment and the growth of energy companies. The results show that: there is a significant positive correlation between government subsidies and the growth of energy enterprises; there is a significant positive correlation between government subsidies and R & D investment; R & D investment has a significant partial mediating effect between government subsidies and the performance of resource-based enterprises.
Research on Microwave-Assisted Catalytic Persulfate Technology in the Field of Environmental Energy
Authors: Xu Hongzhu , Li Changbo , Wang Shuo , Zhao Guozheng , Liang Hui , Fu Yuting
Published: April 2021

Catalytic persulfate technology is a new type of catalytic technology that has been extensively studied in recent years. Among them, the new copper and silver materials synthesized by microwave assist have broad application prospects and are a class of catalysts with excellent performance, environmental friendliness, and stable structure. This article introduces a new type of material loaded with metal copper and silver and activated carbon, analyzes the mechanism of catalytic oxidation, and focuses on summarizing the influencing factors, degradation mechanism, and potential pollutant degradation pathways of this new type of material in water treatment.
Research on the relationship between China’s carbon emission, economic growth and the development of new energy industry
Authors: Chen Huimei , Wang Yingchun , Kang Haifeng
Published: April 2021

In view of the current domestic new economic form, under the trend of sustainable development, new energy industry has become a rising star. The development of new energy can improve the environment destroyed by the development of fossil energy to a certain extent. It is the primary task of environmental protection and energy development to study the specific relationship between China’s current carbon emissions, economic growth and the development of new energy industry. Based on STR model, we can empirically study the impact of carbon emissions on the development of new energy industry, analyze the nonlinear relationship, and propose relevant strategies to promote the development of new energy industry and pay attention to the coordinated development of energy consumption and environmental protection.
Investigation on carbon sequestration capacity of typical subtropical evergreen broad-leaved forest in Wuyi Mountain National Nature Reserve
Authors: Zhang Qiugen , Wang Hongli , Ding Yuan , Li Jian
Published: April 2021

Three typical substropical evergreen broad-leaved forests (Castanopsis eyrei, Schima superba and Cyclobalanopsis glauca) in Wuyi Mountain National Nature Reserve of Jiangxi Province were selected to investigate its carbon sequestration capacity. The biomass and soil bulk density of sample investigation were get by setting sample investigation, field quadrat sampling, indoor sample making, experimental analysis testing, data statistics and analysis. The organic carbon content of vegetation layer (arbor layer, shrub layer and herbaceous layer, litter layer) and soil layer (0-10cm, 10-20cm, 20-30cm, 30-50cm and 50-100cm) were also get. The carbon density and carbon storage of subtropical evergreen broad-leaved forests vegetation and soil were estimated which including Castanopsis eyrei, Schima superba and Cyclobalanopsis glauca. The investigation results had shown that:

The average organic carbon content of each vegetation layer in the investigation plot (400 m2) of Wuyi Mountain National Nature Reserve was arbor layer (54.07%)> shrub layer (52.8%)> herbaceous layer (47.5%), in which the average organic carbon content of the three subtropical evergreen broad-leaved forests in the arbor layer was close 52.97% to 54.87% and the total average content was 54.07%. The average carbon density of the forest vegetation layer was 178.3587t/hm2, the average carbon density of the vegetation layer was arbor layer (176.0273t/hm2)> shrub layer (1.3043t/hm2)> litter layer (0.8144t/hm2)> herbaceous layer (0.2127t/hm2); the average carbon density of each forest species was Castanopsis eyrei (213.5141t/hm2)> Schima superba (168.9069t/hm2)> Cyclobalanopsis glauca (152.6551t/hm2).

Investigation sample of subtropical evergreen broad-leaved forest (400 m) in Wuyi Mountain National Nature Reserve, Jiangxi Province2 The average soil bulk density of each soil layer cm 0-100 g/cm was 0.868-1.816 g/cm3 both soil organic carbon content and soil carbon density decreased with the increase of soil depth. The average organic carbon content of each soil layer was between 3.75% and 12.48%, and the average soil carbon density was between 62.85t/hm2 and 146.14t/hm2. The average total carbon density of the soil in the investigated sample plots was 754.77t/hm2, of which the average soil carbon density in investigation sample plots in Castanopsis eyrei, Schima superba and Cyclobalanopsis glauca was 911.49t/hm2, 762.56t/hm2 and 543.22t/hm2 respectively.

The average carbon storage of the investigation sample plot (400m2) in Jiangxi Wuyi Mountain National Nature Reserve were Castanopsis eyrei forest (45.0002t) >Cyclobalanopsis glauca forest (36.6087t) > Schima superba forest (28.4850t), the average soil carbon storage(30.1908t) was 4.23 times the average carbon storage(7.1314t).
Application of 3D Design Technology in the Construction of 220KV Miluoxi Substation
Authors: Wen Jiang , Jin Hu Yang , Wei Zhai , Guangbing Xu , Xinxin Xiang , Boyang Du
Published: April 2021

In this paper, through the application of 3D design technology in the construction of 220kV Miluoxi substation, the main aspects of the application of 3D design technology in the construction are summarized, including inter discipline verification, collision inspection, real scene modeling, equipment 3D installation details, 4D construction simulation, VR technology application and mobile application solutions. This paper also summarizes the economic, management and social benefits of three-dimensional application, which can be used as a reference for the following projects.