bluuebunny/crossref_metadata_2025_split huggingface dataset:
Revalidation of Adjustment Disorder–New Module‐4 screening of adjustment disorder in a non‐clinical sample: Psychometric reevaluation and correlates with other ICD‐11 mental disorders
Authors: Lavenda Osnat , Mahat‐Shamir Michal , Lorenz Louisa , Hamama‐Raz Yaira , Greenblatt‐Kimron Lee , Pitcho‐Prelorentzos Shani , Ring Lia , Bar‐Shua Eti , Ben‐Ezra Menachem 
Published: April 2019

AbstractIn line with the new conceptualization of adjustment disorder (AjD) in the 11th revision of the International Classification of Diseases (ICD‐11), a new 20‐item self‐report questionnaire was developed and validated – the Adjustment Disorder–New Module (ADNM). However, such a long research tool has the potential to become problematic for use in epidemiological and clinical settings. Therefore, an ultra‐brief measure for AjD (ADNM‐4) was established and validated in a recent study conducted with a representative national sample. The aim of the present study was to revalidate the ultra‐brief ADNM‐4 Scale, as well as to reestablish cutoff scores for clinical use. An online survey was conducted with a convenience sample of 484 Israelis aged 18–65 years, who were recruited via social media. Participants filled out self‐report questionnaires dealing with diagnostic criteria of stress‐related disorders, that is, AjD (the original and ultra‐brief modules), prolonged grief disorder, depression, anxiety, and hypochondriasis. Construct, discriminant, and convergent validity were assessed via confirmatory factor analysis and correlation coefficients, while cutoff scores were established through receiver–operating characteristic analysis. The findings confirmed the ultra‐brief module's validity. The high fit indices indicated construct validity, and the correlations with the various stress‐related disorders indicated good convergent and discriminant validity. Cutoff scores resembled earlier cutoff scores calculated with a representative national sample, indicating a consistent and accurate diagnostic ability. These findings provide additional evidence for the psychometric characteristics of the ADNM‐4, which seems to be a suitable brief screening tool for assessing AjD symptoms according to the ICD‐11 definition. Therefore, the ADNM‐4 is recommended in cases where prompt screening is required, as well as for research purposes.
A convenient, soil‐free method for the production of root nodules in soybean to study the effects of exogenous additives
Authors: Roy Choudhury Swarup , Johns Sarah M. , Pandey Sona 
Published: April 2019

AbstractLegumes develop root nodules that harbor endosymbiotic bacteria, rhizobia. These rhizobia convert nitrogen to ammonia by biological nitrogen fixation. A thorough understanding of the biological nitrogen fixation in legumes and its regulation is key to develop sustainable agriculture. It is well known that plant hormones affect nodule formation; however, most studies are limited to model legumes due to their suitability for in vitro, plate‐based assays. Specifically, it is almost impossible to measure the effects of exogenous hormones or other additives during nodule development in crop legumes such as soybean as they have huge root system in soil. To circumvent this issue, the present research develops suitable media and growth conditions for efficient nodule development under in vitro, soil‐free conditions in an important legume crop, soybean. Moreover, we also evaluate the effects of all major phytohormones on soybean nodule development under identical growing conditions. Phytohormones such as abscisic acid (ABA) and jasmonic acid (JA) had an overall inhibitory effect and those such as gibberellic acid (GA) or brassinosteroids (BRs) had an overall positive effect on nodule formation. This versatile, inexpensive, scalable, and simple protocol provides several advantages over previously established methods. It is extremely time‐ and resource‐efficient, does not require special training or equipment, and produces highly reproducible results. The approach is expandable to other large legumes as well as for other exogenous additives.
Isotope Effects on the Crystallization Kinetics of Selectively Deuterated Poly(ε‐Caprolactone)
Authors: Li Lengwan , Chang Dongsook , Arras Matthias M. L. , Li Wei , Li Tianyu , Keum Jong K. , Bonnesen Peter V. , Peng Xiangfang , Hong Kunlun 
Published: April 2019

ABSTRACTDeuterium labeling of semi‐crystalline polymers can dramatically affect their crystallization behaviors. However, the influence of different labeled positions in a partially deuterated polymer on its crystallization is still far from understood. Here, we synthesized a series of selectively deuterated poly(ε‐caprolactones) (PCLs) through ring‐opening polymerization of ε‐caprolactone with controlled deuteration sites, including fully protiated (D0), fully deuterated (D10), tetra deuteration at the 3‐ and 7‐ caprolactone ring positions (D4) and hexa deuteration at the 4‐, 5‐, and 6‐ caprolactone ring positions (D6). All the PCLs showed a similar lamellar structure and parameters. Differential scanning calorimetry (DSC) analysis revealed that the equilibrium melting temperature , melting temperature Tm, crystallization temperature Tc, and crystallization kinetics changed systemically with the deuterium content except for D4, which indicates that the presence of CD2 moieties on either side of ester group in the polymer chain combined with isotopic inhomogeneity could influence the chain packing. The nonmonotonic trend of Tm as a function of deuterium content could be attributed to the difference in a hydrogen‐bond like intermolecular interaction between different PCLs. Partially deuterated PCLs (D4 and D6) showed an Avrami index near 2. After analyzing the parameters at the same supercooling temperature ΔTc, the existence of two crystallization regimes of PCLs were detected. © 2019 Wiley Periodicals, Inc. J. Polym. Sci., Part B: Polym. Phys. 2019, 57, 771–779
Nanostructured Surface and Antimicrobial Properties of Chemically Modified Polymer Foils
Authors: Knapova Tereza , Matousek Jindrich , Kolarova Katerina , Slepicka Petr , Sicha Vaclav , Trogl Josef , Kolska Zdenka 
Published: April 2019

AbstractSurfaces of solid polymer foils were modified by chemical methods. Surfaces were firstly activated by Piranha solution and then grafted with selected amino‐compounds (cysteamine, ethylenediamine and chitosan). Next step was established of cobaltacarborane compound. Selected surface properties were studied using various available methods to characterize changes in surface chemistry (X‐ray photoelectron spectroscopy), charge and polarity (electrokinetic analysis), wettability (goniometry), surface roughness and morphology were studied by atomic force microscopy and scanning electron microscopy. Surface area with porosity by adsorption/desorption isotherms. The surface properties dramatically differ after individual activation and modification steps and can affect the adhesion properties. Also some antimicrobial tests were realized. Samples treated with cobaltcarborane compounds exhibit antimicrobial effects to algae D. quadricauda and to gram‐ positive bacteria S. epidermidis. It was confirmed this cobaltcarborane compound can be easily grafted on polymer surface by two ways (i) directly onto Piranha activated polymer surfaces and/or (ii) via amino‐ compounds previously grafted onto Piranha activated polymer surfaces. The most important fact is that its antimicrobial behaviour remains preserved also after its grafting onto polymer surface. These chemically modified polymers can be used in the fields of nanobiotechnology, tissue engineering studies, biomedicine or environment protection.
Hybrid Oleic Acid‐Graphene Quantum Dot Vesicles for Drug Delivery
Authors: Boruah Jayanta S. , Chowdhury Devasish 
Published: April 2019

AbstractBio‐mimicking hybrid vesicle systems are ideal candidates for drug/gene delivery and nano‐reactor applications. Here, we report the fabrication of hybrid oleic acid‐graphene quantum dot vesicles that were successfully used as an efficient drug delivery system (DDS). The fabricated hybrid oleic acid‐graphene quantum dot vesicles were characterized by UV‐Visible spectrophotometry, optical microscopy, dynamic light scattering and scanning electron microscopy. In this experiment, methylene blue (MB) dye was used as a model drug. Hybrid oleic acid‐graphene quantum dot vesicles were very efficient in drug loading (98.3%) when compared with bare oleic acid vesicles (71.98%). It is observed that drug release was pH‐dependent and higher release was observed at pH 5, much lower or negligible release takes place at pH 7.4. Development of such hybrid vesicles will lead to biocompatible, nontoxic, easily fabricated, and stimuli responsive DDSs.
3‐(2‐(5‐Amino‐3‐aryl‐1H‐pyrazol‐1‐yl) thiazol‐4‐yl)‐2H‐chromen‐2‐ones as Potential Anticancer Agents: Synthesis, Anticancer Activity Evaluation and Molecular Docking Studies
Authors: Vaarla Krishnaiah , Karnewar Santosh , Panuganti Devayani , Peddi Saikiran Reddy , Vedula Rajeswar Rao , Manga Vijjulatha , Kotamraju Srigiridhar 
Published: April 2019

AbstractIn an effort to design and develop efficient anticancer agents here, we report the synthesis, anticancer activity and molecular docking studies of new 3‐(2‐(5 amino‐3‐aryl‐1H‐pyrazol‐1‐yl)thiazol‐4‐yl)‐2H‐chromen‐2‐ones. The target products were synthesized via a facile one pot multicomponent approach by utilizing various substituted 3‐(2‐bromoacetyl)coumarins(1 a‐j), thiosemicarbazide (2) and benzoylacetonitriles (3 a–c) with excellent yields. All the synthesized compounds were characterized by physical and analytical methods (IR, 1H NMR, 13C NMR and Mass spectra) and screened for their anti cancer property against five human cancer cell lines [L1210, CEM, DU‐145, HeLa, and MCF‐7]. Among the tested compounds, 6‐diethylamino substituted compound 4 k exhibited excellent potency against tested cancer cell lines, whereas 6,8‐Ditert‐butyl substituted compound 4 j shown promising activity against DU‐145 and MCF‐7 cancer cell lines with IC50 values of 7±1 and 9±6 μM. Molecular docking study was carried out in order to understand the most plausible binding site interactions of the compounds with human Epidermal growth factor receptor (EGFR).
A Study on the Interaction between New Indole Amide Compound and Aluminum(III) Ion
Authors: Chen Jichao , Jiang Weina , Lu Wen , Xu Li , Yang Shilong , Xue Huayu , Shi Jiuzhou , Sun Xu 
Published: April 2019

AbstractA new indole‐based compound N‐(pyridine‐2‐ylmethyl)‐1H‐indole‐2‐carboxamide (FL) which could selectively recognize Al3+ had been designed, synthesized and evaluated. FL could detect Al3+ with high sensitivity. The fluorescence intensity of FL‐Al3+ solution was linear dependence to the concentration of Al3+ in the ranges from 0 to 5 μmol/L. The addition of Al3+ caused quenching of fluorescence intensity and the limit of detection for Al3+ was as low as 1.79×10−9 M. The binding ratio of FL‐Al3+ was obtained 3:2 by Job's plot and the binding constant was 9.37×105. Moreover, FL had been successfully applied in real sample detection.
C59N Heterofullerene: A Promising Catalyst for NO Conversion into N2O
Authors: Esrafili Mehdi D. , Heidari Safa 
Published: April 2019

AbstractWe report, for the first time, the possibility of using N‐doped C60 fullerene (C59N) as a novel and highly active metal‐free catalyst for reduction of NO molecules to N2O. First‐principles density functional theory calculations are used to find the most energetically favorable adsorbed/coadsorbed configurations of NO molecules over C59N. Our results indicate that introducing a N impurity in C60 can induce a positive charge and large spin density over the carbon atoms nearest to the dopant atom. Consequently, these carbon atoms are identified as the most reactive sites to interact with the NO molecule. According to our results, the dissociation of NO molecule over C59N is almost impossible, due to its relatively high activation energy (1.35 eV). The reduction of NO over C59N starts with the coadsorption of two NO molecules to form (NO)2 species, followed by the dissociation of (NO)2 into N2O and an active atomic oxygen (Oads). The energy barrier to convert NO molecules into N2O ranges from 0.33 to 0.75 eV, which indicates this process is likely to proceed at normal temperature. Besides, by overcoming a negligible energy barrier (0.18 eV), the remaining Oads moiety can be easily eliminated by a CO molecule. To further understand the role of nitrogen atoms in the NO reduction process, the catalytic performance of high percentage N‐doped fullerene (C48N12) is also studied.
Novel Strategy for Producing Nanoplatelets to be Used as Building Blocks for Shaping Nanofibers through Layered Double Hydroxides and Poly Vinyl Alcohol
Authors: Saber Osama , Aljaafari Abdullah , Alomair Haifa A. , Alshoaibi Adil 
Published: April 2019

AbstractIt is known that the layered double hydroxides (LDHs) have grown in the nano scale. However, their morphologies are platelets in the micro scale. In order to be more applicable for designing nano‐devices, the present research promotes the growth process of LDHs not only to produce nanoplatelets using the chains of poly vinyl alcohol but also to use them as building blocks for forming nanofibers. In presence of poly vinyl alcohol, Zn‐Al LDHs were prepared and characterized by X‐ray diffraction, scanning and transmission electron microscopy, and Infrared spectra. SEM and TEM images showed that the prepared Zn‐Al‐PVA LDHs have nanofibers shape. HRTEM images revealed nanoplatelets with dimension lower than 10 nm around the fibers. By thermal treatment, the layered structure of the nanoplatelets disappeared and the nanocomposites of aluminum zinc oxides were grown in shape of nanofibers. The optical properties and the photo activities of the prepared nanoplatelets and nanofibers were examined and compared with their counterpart nanoparticles through photocatalytic degradation of colored dyes. The experimental results showed that the nanofibers were very active for photocatalytic degradation of green dyes. Finally, this study concluded that polymer chains could be used as seeds for growing nanoplatelets, which acted as building blocks in the nano scale to form active nanofibers for environmental applications. Also, this approach will be useful for building nanodevices.
Ab‐Initio Molecular Dynamics Simulation of the Electrolysis of Waste Water
Authors: Frank Irmgard 
Published: April 2019

AbstractElectrolysis is potentially a valuable method for cleansing waste water. Chemically the process is ultra‐fast and highly complex. In the present study the products formed at the cathode and anode are investigated using Car‐Parrinello molecular dynamics. To make a start into this vast field, relatively simple mixtures are investigated. The simulations of the anodic process are performed for urea and uric acid in water containing discharged hydroxide. The cathodic process is simulated for urea and uric acid in water with discharged ammonium ions. While at the cathode mainly molecular hydrogen is developed, the chemistry at the anode is rather complex. We observe unstable intermediates which are probably toxic.
Temperature Sensing Properties base on Up‐Conversion Luminescence for NaYF4: Er3+, Yb3+ Phosphor
Authors: Cui Yanwen. , Meng Qingyu. , Lü Shuchen. , Sun Wenjun. 
Published: April 2019

AbstractEDTA was used as chelating agent to synthesize Er3+, Yb3+ co‐doped NaYF4 phosphor by hydrothermal process. The crystallographic structures were characterized by X‐ray Diffraction (XRD). The morphologies were analyzed by field emission scanning electron microscopy (FE ‐ SEM). It can be known that with the increase of the EDTA/Re3+, the crystalline phase of samples change from α phase to the β phase. The temperature‐dependent up‐conversion emission spectra of the samples have been tested by the 980 nm laser excitation. Temperature sensing properties of samples were studied based on the fluorescence intensity ratio for two thermally coupled levels 2H11/2 and 4S3/2 of Er3+. The results show that the optical temperature sensing sensitivity increased gradually along with the EDTA/Re3+ increasing, no matter the samples are α phase or β phase. And the sensitivity maximum of α phase samples is 0.00419 K−1 (at 486 K, EDTA/Re3+=3), the sensitivity maximum of β phase samples is 0.00466 K−1 (at 550 K, EDTA/Re3+=8). But the relative sensitivity has nothing to do with the amount of EDTA, only related to the crystalline phase. The relative sensitivity maximum of α phase samples is about 0.0105 K−1 (at 303 k), the maximum relative sensitivity of β phase samples is about 0.0120 K−1 (at 303 k). So, temperature sensing properties of β phase are better than that of α phase.
Color‐Tunable Eu3+ and Tb3+ Co‐Doped Nanophosphors Synthesis by Plasma‐Assisted Method
Authors: Lin LiangLiang , Ma XinTong , Starostin Sergey A. , Li SiRui , Hessel Volker , Shen Jie , Shang ShaoMing , Xu HuJun 
Published: April 2019

AbstractWith increasing health consciousness, Y2O3‐based rare earth nanophosphors are considered as promising luminescent complexes for bio‐applications. In the present study, an atmospheric pressure plasma‐electrochemical technique is demonstrated for the synthesis of Eu3+/Tb3+ single‐doped or co‐doped Y2O3 nanophosphors from merely an aqueous solution of the corresponding rare earth nitrite salts. Systematic experiments were performed to prepare (Y1‐x‐yEuxTby)2O3 nanophosphors of various Tb3+ and Eu3+ ratios (x:y = 1:0, 2:1, 1:1, 1:2, and 0:1), with the ultimate goal to achieve the colour tunability by simply adjusting the dopant compositions. Results indicated successfulness synthesis of crystalline Eu/Tb single‐doped and co‐doped Y2O3 nanophosphors with Tb3+ and Eu3+ ions being uniformly incorporated into the Y2O3 host matrix. The generated products showed apparent downshift behaviour under ultraviolet irradiation, and characteristic spectral excitation and emission bands were detected by the photoluminescence measurement. Furthermore, by adjusting the relative composition ratios of the terbium and europium ions, the emission colours were shown to be regulated to a large extent. The demonstrated process can be characterized as simple, versatile and environmentally‐friendly, featuring great flexibility in colour tunability, and therefore can present a considerable interest for emerging nanofabrication applications.
Synthesis and Properties of Au Hydride
Authors: Sil Devika , Lane Christopher , Glor Ethan , Gilroy Kyle D. , Sylla Safiya , Barbiellini Bernardo , Markiewicz Robert , Hajfathalian Maryam , Neretina Svetlana , Bansil Arun , Fakhraai Zahra , Borguet Eric 
Published: April 2019

AbstractThe generation of chemical species from gases, noble metals and light interacting with localized surface plasmons represents a new paradigm for achieving low energy sustainable reaction pathways. Here, we demonstrate that the dissociation reaction of H2 meditated by the decay of localized surface plasmons of gold nanoparticles leads to the generation of a new material as detected by a change in the optical properties of the gold nanostructures. The effective permittivity measured by in situ spectroscopic ellipsometry shows a blue‐shift of 0.02 eV in the surface plasmon resonance, demonstrating the plausible formation of a metastable gold hydride layer on the surface of nanoparticles following the dissociation of H2. The formation of this gold hydride through the interaction of gold with atomic H is supported by first‐principles simulations. These calculations do not indicate a significant charge transfer upon hydrogenation of the (111) surface but rather large Friedel charge oscillations within the gold layer. Moreover, our blue‐shift is produced by the formation of a hydride leading to changes in critical band gaps in the electronic structure. For a coverage of 11%, the calculated peak of the imaginary part of the ZZ‐component of the dielectric tensor undergoes a blue shift of 28 nm from a hydrogen free peak at 574 nm.
Dynamic Nanostructures from DNA‐Coupled Molecules, Polymers, and Nanoparticles
Authors: Albert Shine K. , Hu Xiaole , Park So‐Jung 
Published: April 2019

AbstractDynamic and reconfigurable systems that can sense and react to physical and chemical signals are ubiquitous in nature and are of great interest in diverse areas of science and technology. DNA is a powerful tool for fabricating such smart materials and devices due to its programmable and responsive molecular recognition properties. For the past couple of decades, DNA‐based self‐assembly is actively explored to fabricate various DNA–organic and DNA–inorganic hybrid nanostructures with high‐precision structural control. Building upon past development, researchers have recently begun to design and assemble dynamic nanostructures that can undergo an on‐demand transformation in the structure, properties, and motion in response to various external stimuli. In this Review, recent advances in dynamic DNA nanostructures, focusing on hybrid structures fabricated from DNA‐conjugated molecules, polymers, and nanoparticles, are introduced, and their potential applications and future perspectives are discussed.
Effects of regulating the European Internal Market on the integration of variable renewable energy
Authors: Algarvio Hugo , Lopes Fernando , Couto António , Santana João , Estanqueiro Ana 
Published: April 2019

AbstractThe new proposal for regulating the European Internal Market for Electricity (EIME) can motivate the harmonization of the various National markets. The process of harmonizing the day‐ahead markets (DAMs) is at an advanced stage, with an efficiency in the use of interconnectors of 86%. However, the harmonization of both intraday (IDMs) and balancing markets (BMs) is still in its infancy, with an efficiency in the use of interconnectors of 50 and 19%, respectively. The new proposal brings new targets to DAMs, and European countries should make efforts to comply with them. The same is true for IDMs and BMs, but involving more ambitious targets, requiring higher efforts to be accomplished. Both the analysis of the various National markets (according to their compliance with the new proposal for regulating the EIME) and the advantages of the new proposal for key market participants (particularly, consumers, variable renewable generation, and conventional generation) are presented. The analysis indicates that the proposal contributes to a potential increase of the general welfare of market participants. However, some aspects of the proposal can negatively affect the revenue obtained from the National markets, notably for variable renewable generation and conventional generation.This article is categorized under:
Wind Power > Systems and Infrastructure
Energy Policy and Planning > Economics and Policy
Energy Systems Analysis > Economics and Policy
Energy and Development > Economics and Policy
Bifurcation analysis of the rotating axially compressed nano‐rod with imperfections
Authors: Atanacković Teodor M. , Oparnica Ljubica , Zorica Dušan 
Published: April 2019

AbstractStatic stability problem for axially compressed rotating nano‐rod clamped at one and free at the other end is analyzed by the use of bifurcation theory. It is obtained that the pitchfork bifurcation may be either super‐ or sub‐critical. Considering the imperfections in rod's shape and loading, it is proved that they constitute the two‐parameter universal unfolding of the problem. Numerical analysis also revealed that for non‐locality parameters having higher value than the critical one interaction curves have two branches, so that for a single critical value of angular velocity there exist two critical values of horizontal force.