bluuebunny/crossref_metadata_2025_split huggingface dataset:
E-Mail Forensics: Techniques and Tools for ForensicInvestigation of One Court Case
Authors: Lazić Ljubomir 
Published: March 2020

E-mail has emerged as the most important application on the Internet for communication of messages, delivery of documents and carrying out transactions and is used not only from computers, but many other electronic gadgets such as mobile phones. This paper is an attempt to illustrate e-mail architecture from forensics perspective. Also, this paper projects the need for e-mail forensic investigation and lists various methods and tools used for its realization. A detailed header analysis of a multiple tactic spoofed e-mail message is carried out in this paper. It also discusses various possibilities for detection of spoofed headers and identification of its originator. Furthermore, difficulties that may be faced by investigators during forensic investigation of an e-mail message have been discussed along with their possible solutions. Our focus is on email header analysis phase offered by the tools. We examine the capability of a particular tools such as EmailTrackerPro and aid4mail in action. The paper describes the court case of cyber crime, the so-called identity theft in Internet communication via electronic mail by two business entities. Identity theft of e-mail addresses and false communications with a foreign company was carried out in order to indicate that a cash transaction of around EUR 100,000 was paid to the account of NN attackers and not to the account in the domestic Serbian bank.
Dyadic nominations of bullying: Comparing types of bullies and their victims
Authors: Malamut Sarah T. , van den Berg Yvonne H. M. , Lansu Tessa A. M. , Cillessen Antonius H. N. 
Published: March 2020

AbstractPrevious studies indicate that when identifying individuals involved in bullying, the concordance between self‐ and peer‐ reports is low to moderate. There is support that self‐ and peer‐ identified victims constitute distinct types of victims and differ in adjustment. Likewise, differentiating between self‐ and peer‐ reports of bullying may also reveal distinct types of bullies. The goal of this study was to examine differences between types of bullies identified via dyadic nominations (self‐identified, victim‐identified, and self/victim identified). First, we examined the concordance between dyadic nominations of bullying and traditional measures of bullying (i.e., self‐ and peer‐reports). Second, we compared the behavioral profiles of the bully types to nonbullies, with a focus on aggressive behaviors and social status. Third, we examined whether the types of bullies targeted victims with different levels of popularity, as well as the role of their own popularity and prioritizing of popularity. Participants were 1,008 Dutch adolescents (50.1% male, Mage = 14.14 years, standard deviation [SD] = 1.30) who completed a classroom assessment of dyadic nominations, peer nominations, and self‐report items. Results indicated that victim identified and self/victim identified bullies were more aggressive, more popular, and less socially preferred than self‐identified bullies and nonbullies. Self/victim identified bullies targeted victims with the highest social status. The association between bully type and victims' popularity was further qualified by bullies' own popularity and the degree to which they prioritized popularity. Implications for the implementation of dyadic nominations are discussed.
Traumatic brain injury and adverse psychological effects: Examining a potential pathway to aggressive offending
Authors: Silver Ian A. , Nedelec Joseph L. 
Published: March 2020

AbstractContemporary scholarship has demonstrated an association between traumatic brain injury (TBI) during adolescence and aggressive offending. Research, however, has yet to identify any mechanisms linking TBI to subsequent aggressive offending. Consequently, the current study hypothesized that adverse psychological effects is one such pathway. The current study used the Pathways to Desistance data set (n = 416) to examine the pathway of TBI to aggressive offending through adverse psychological effects. The findings of the structural equation model supported the hypothesized association. Specifically, increased exposure to TBI was indirectly associated with aggressive offending through adverse psychological effects. An additional supplemental analysis illustrated that a direct link between TBI and aggressive offending did not exist for the analytical sample. The findings suggested that the neurological disruptions commonly associated with TBI could result in direct increases in negative psychological outcomes and indirect increases in subsequent negative behavioral outcomes.
Robust economic model predictive control of nonlinear networked control systems with communication delays
Authors: Mao Yawen , Liu Su , Liu Jinfeng 
Published: March 2020

SummaryIn this work, we consider economic model predictive control of nonlinear networked control systems subject to external disturbances and communication delays in both sensor‐to‐controller and controller‐to‐actuator channels. The problem is addressed in the framework of the min‐max model predictive control. First, a delay compensation strategy is proposed to minimize the impact of communication delays on the control performance. In the compensation strategy, once the receiver at the controller node receives a new state measurement, the controller generates a control sequence and sends the sequence to the actuator to compensate for delayed control inputs. Subsequently, the presence of disturbance is explicitly considered for robustness and the semi‐feedback min‐max optimization algorithm is used to design the control law based on the estimate of the current state reconstructed by the estimator. Furthermore, the input‐to‐state practical stability of the proposed approach is established by constructing a modified Lyapunov function. Simulation results of a numerical example and a chemical process example demonstrate the applicability and effectiveness of our approach.
High‐Performance CsPbIxBr3‐x All‐Inorganic Perovskite Solar Cells with Efficiency over 18% via Spontaneous Interfacial Manipulation
Authors: Zheng Yifan , Yang Xiaoyu , Su Rui , Wu Pan , Gong Qihuang , Zhu Rui 
Published: March 2020

AbstractCesium‐based all‐inorganic halide perovskites solar cells (PSCs) have recently attracted increasing attention. Currently, due to the existence of high defects density and unoptimized interfacial morphology, “state‐of‐the‐art” performances of all‐inorganic PSCs are still far away from their theoretical limits. Although commonly used two‐step passivation methods can effectively passivate the perovskite surface, they will inevitably detriment the original perovskite morphology due to the use of weak‐polarity solvents. This will potentially result in the unintentional doping, uncontrollable interfacial band alignment, and the additional defects formation. Hence, a spontaneous interfacial manipulation (SIM) method is developed to self‐organize a 2D/3D multidimensional perovskite top interface. It is demonstrated that the spontaneously formed ultrathin 2D perovskite can not only eliminate the interfacial defects, but also effectively prevent moisture penetration. As a result, a significant power conversion efficiency enhancement from 13.64% to over 18% is obtained along with greatly extended device lifetime, for CsPbIxBr3‐x‐based all‐inorganic PSC.
Stimuli‐Responsive Delivery of Growth Factors for Tissue Engineering
Authors: Qu Moyuan , Jiang Xing , Zhou Xingwu , Wang Canran , Wu Qingzhi , Ren Li , Zhu Jixiang , Zhu Songsong , Tebon Peyton , Sun Wujin , Khademhosseini Ali 
Published: March 2020

AbstractGrowth factors (GFs) play a crucial role in directing stem cell behavior and transmitting information between different cell populations for tissue regeneration. However, their utility as therapeutics is limited by their short half‐life within the physiological microenvironment and significant side effects caused by off‐target effects or improper dosage. “Smart” materials that can not only sustain therapeutic delivery over a treatment period but also facilitate on‐demand release upon activation are attracting significant interest in the field of GF delivery for tissue engineering. Three properties are essential in engineering these “smart” materials: 1) the cargo vehicle protects the encapsulated therapeutic; 2) release is targeted to the site of injury; 3) cargo release can be modulated by disease‐specific stimuli. The aim of this review is to summarize the current research on stimuli‐responsive materials as intelligent vehicles for controlled GF delivery; Five main subfields of tissue engineering are discussed: skin, bone and cartilage, muscle, blood vessel, and nerve. Challenges in achieving such “smart” materials and perspectives on future applications of stimuli‐responsive GF delivery for tissue regeneration are also discussed.
On the Controlled Loading of Single Platinum Atoms as a Co‐Catalyst on TiO2 Anatase for Optimized Photocatalytic H2 Generation
Authors: Hejazi Seyedsina , Mohajernia Shiva , Osuagwu Benedict , Zoppellaro Giorgio , Andryskova Pavlina , Tomanec Ondrej , Kment Stepan , Zbořil Radek , Schmuki Patrik 
Published: March 2020

AbstractSingle‐atom (SA) catalysis is a novel frontline in the catalysis field due to the often drastically enhanced specific activity and selectivity of many catalytic reactions. Here, an atomic‐scale defect engineering approach to form and control traps for platinum SA sites as co‐catalyst for photocatalytic H2 generation is described. Thin sputtered TiO2 layers are used as a model photocatalyst, and compared to the more frequently used (001) anatase sheets. To form stable SA platinum, the TiO2 layers are reduced in Ar/H2 under different conditions (leading to different but defined Ti3+‐Ov surface defects), followed by immersion in a dilute hexachloroplatinic acid solution. HAADF‐STEM results show that only on the thin‐film substrate can the density of SA sites be successfully controlled by the degree of reduction by annealing. An optimized SA‐Pt decoration can enhance the normalized photocatalytic activity of a TiO2 sputtered sample by 150 times in comparison to a conventional platinum‐nanoparticle‐decorated TiO2 surface. HAADF‐STEM, XPS, and EPR investigation jointly confirm the atomic nature of the decorated Pt on TiO2. Importantly, the density of the relevant surface exposed defect centers—thus the density of Pt‐SA sites, which play the key role in photocatalytic activity—can be precisely optimized.
Self‐Healing, High Adherent, and Antioxidative LbL Multilayered Film for Enhanced Cell Adhesion
Authors: Yuan Renqiang , Luo Chenxi , Yang Yifan , He Chunpeng , Lu Zuhong , Ge Liqin 
Published: March 2020

AbstractCell adhesion acts as a complex process that is hardly promoted through surfaces with a single performance. Controlling the cell's adhesion on the interfaces between the synthetic materials and the biological environments remains a real challenge in the biomedical fields. Herein, based on RGD peptide modified carboxymethyl chitosan (CCS‐R) and dopamine modified oxidized alginate (OALG‐D), a layer‐by‐layer (LbL) self‐assemble multilayered (CCS‐R/OALG‐D)15 film is developed. The multifunctional (CCS‐R/OALG‐D)15 film with a self‐healing, highly adherent, biocompatible, and antioxidative biomatrix property for the cell adhesion is fabricated with the Schiff‐base bond, electrovalent bond, and hydrogen bond. The LbL multilayered film exhibits the significant cell adhesion ability for the normal human dermal fibroblast cells and the coral Acropopa formosa cells. Furthermore, it holds high self‐healing efficiency (88.8%), excellent adhesion strength (adhesive stress: 61.1 MPa), and outstanding antioxidation (free radical scavenging rate: 86.8%). Furthermore, it is demonstrated that the LbL multifunctional film, as a culture matrix, has prolonged the survival of the coral Acropopa formosa. Therefore, the incorporation of a self‐healing, high adhesion, superior cell adhesion, and antioxidation property into a single LbL self‐assembly film provides a promising platform for regenerative medicine.
Silylation of Aryl Chlorides by Bimetallic Catalysis of Palladium and Gold on Alloy Nanoparticles
Authors: Miura Hiroki , Masaki Yosuke , Fukuta Yohei , Shishido Tetsuya 
Published: March 2020

AbstractSupported palladium‐gold alloy‐catalyzed cross‐coupling of aryl chlorides and hydrosilanes enabled the selective formation of aryl‐silicon bonds. Whereas a monometallic palladium catalyst predominantly promoted the hydrodechlorination of aryl chlorides and gold nanoparticles showed no catalytic activity, gold‐rich palladium‐gold alloy nanoparticles efficiently catalyzed the title reaction to give arylsilanes with high selectivity. A wide array of aryl chlorides and hydrosilanes participated in the heterogeneously‐catalyzed reaction to furnish the corresponding arylsilanes in 34–80% yields. A detailed mechanistic investigation revealed that palladium and gold atoms on the surface of alloy nanoparticles independently functioned as active sites for the formation of aryl nucleophiles and silyl electrophiles, respectively, which indicates that palladium and gold atoms on alloy nanoparticles work together to enable the selective formation of aryl‐silicon bonds.magnified image
A Multiresolution Mesoscale Approach for Microscale Hydrodynamics
Authors: Montessori Andrea , Tiribocchi Adriano , Lauricella Marco , Bonaccorso Fabio , Succi Sauro 
Published: March 2020

AbstractA new class of multiscale scheme is presented for micro‐hydrodynamic problems based on a dual representation of the fluid observables. The hybrid model is first tested against the classical flow between two parallel plates and then applied to a plug flow within a micrometer‐sized striction and a shear flow within a microcavity. Both cases demonstrate the capability of the multiscale approach to reproduce the correct macroscopic hydrodynamics also in the presence of refined grids (one and two levels), while retaining the correct thermal fluctuations, embedded in the multiparticle collision method. This provides the first step toward a novel class of fully mesoscale hybrid approaches able to capture the physics of fluids at the micro‐ and nanoscales whenever a continuum representation of the fluid falls short of providing the complete physical information, due to a lack of resolution and thermal fluctuations.
Optical Absorption‐Based In Situ Characterization of Halide Perovskites
Authors: Babbe Finn , Sutter‐Fella Carolin M. 
Published: March 2020

AbstractHalide perovskites have emerged as materials for high‐performance optoelectronic devices. Often, progress made to date in terms of higher efficiency and stability is based on increasing material complexity, i.e., formation of multicomponent halide perovskites with multiple cations and anions. In this review article, the use of in situ optical methods, namely, photoluminescence (PL) and UV‐vis, that provide access to the relevant time and length scales to ascertain chemistry–property relationships by monitoring evolving properties is discussed. Additionally, because halide perovskites are electron/ion conductors and prone to solid‐state ion transport under various external stimuli, application of these optical methods in the context of ionic movement is described to reveal mechanistic insights. Finally, examples of using in situ PL and UV‐vis to study degradation and phase transitions are reviewed to demonstrate the wealth of information that can be obtained regarding many different aspects of ongoing research activities in the field of halide perovskites.
Strategic Halogen Substitution to Enable High‐Performance Small‐Molecule‐Based Tandem Solar Cell with over 15% Efficiency
Authors: Ryu Seung Un , Abbas Zaheer , Cho Ara , Lee HyunKyung , Song Chang Eun , Lee Hang Ken , Lee Sang Kyu , Shin Won Suk , Moon Sang‐Jin , Park Taiho , Kim Hong Il , Lee Jong‐Cheol 
Published: March 2020

AbstractSmall molecules have been recently highlighted as active materials owing to their facile synthesisis method, well‐defined molecular structure, and highly reproducible performance. In particular, optimizing bulk heterojunction (BHJ) morphologies is important to achieving high performance in solution‐processable small molecule solar cells (SM‐SCs). Herein, a series of benzodithiophene‐based active materials with different halogen atoms substituted at the end‐group, are reported, as well as how these halogen atoms affect the morphology of BHJ architectures through microstructure analyses. Materials with chlorine atoms show a well‐mixed morphology and interpenetrating networks when blended with [6,6]‐phenyl‐C71‐butyric acid methyl ester, facilitating effective charge transportation. This controlled morphology helps attain excellent performance with a power conversion efficiency (PCE) of 10.5% and a highest fill factor of 78.0% without additives. In addition, it can be applied to two‐terminal (2T)‐tandem solar cells, attaining an outstanding PCE of up to 15.1% with complementary absorption in the field of the 2T‐tandem solar cells introducing the SM‐SCs. These results suggest that tailoring interactions with halogen atoms is an effective way to control BHJ architectures, thereby achieving remarkable performance in SM‐SCs.
Cyclic Aminosilane‐Based Additive Ensuring Stable Electrode–Electrolyte Interfaces in Li‐Ion Batteries
Authors: Kim Koeun , Hwang Daeyeon , Kim Saehun , Park Sung O , Cha Hyungyeon , Lee Yoon‐Sung , Cho Jaephil , Kwak Sang Kyu , Choi Nam‐Soon 
Published: March 2020

AbstractNi‐rich cathodes are considered feasible candidates for high‐energy‐density Li‐ion batteries (LIBs). However, the structural degradation of Ni‐rich cathodes on the micro‐ and nanoscale leads to severe capacity fading, thereby impeding their practical use in LIBs. Here, it is reported that 3‐(trimethylsilyl)‐2‐oxazolidinone (TMS‐ON) as a multifunctional additive promotes the dissociation of LiPF6, prevents the hydrolysis of ion‐paired LiPF6 (which produces undesired acidic compounds including HF), and scavenges HF in the electrolyte. Further, the presence of 0.5 wt% TMS‐ON helps maintain a stable solid–electrolyte interphase (SEI) at Ni‐rich LiNi0.7Co0.15Mn0.15O2 (NCM) cathodes, thus mitigating the irreversible phase transformation from layered to rock‐salt structures and enabling the long‐term stability of the SEI at the graphite anode with low interfacial resistance. Notably, NCM/graphite full cells with TMS‐ON, which exhibit an excellent discharge capacity retention of 80.4%, deliver a discharge capacity of 154.7 mAh g−1 after 400 cycles at 45 °C.
Selenium‐Mediated Cyclization Reaction of 2‐Vinylanilines with/without Isonitriles: Efficient Synthesis of 2‐Aminoquinoline/ 3‐Aryl‐1H‐indole Derivatives
Authors: Zhang Xi , Wang Yong‐Qing , Alduma Anwar L. , Arif S. H Ullah , Wang Xi‐Cun , Quan Zheng‐Jun 
Published: March 2020

AbstractHerein, we report a non‐metal strategy for cyclization reactions of 2‐vinylanilines with/without isonitriles to synthesize 2‐aminoquinoline and 3‐aryl‐1H‐indole derivatives. A series of 2‐aminoquinolines were afforded in good to excellent yields in a direct, facile, and efficient approach by Se‐catalyzed isocyanide insertion with 2‐vinylanilines under an air atmosphere. This reaction not only used low toxicity Se as the catalyst, isocyanobenzene substrates were compatible too compared to previous report. Meanwhile, an intramolecular cyclization of 2‐vinylanilines was developed to give 3‐aryl‐1H‐indoles in moderate to good yields by using SeO2 as oxidant.
Enantioselective Catalytic Aldehyde α‐Alkylation/Semipinacol Rearrangement: Construction of α‐Quaternary‐δ‐Carbonyl Cycloketones and Total Synthesis of (+)‐Cerapicol
Authors: Yang Jie , Zhang Xiao‐Ming , Zhang Fu‐Min , Wang Shao‐Hua , Tu Yong‐Qiang , Li Zhen , Wang Xi‐Chao , Wang Hong 
Published: March 2020

AbstractAn enantioselective aldehyde α‐alkylation/semipinacol rearrangement was achieved through organo‐SOMO catalysis. The catalytically generated enamine radical cation serves as a carbon radical electrophile that can stereoselectively add to the alkene of an allylic alcohol and initiate ensuing ring‐expansion of cyclopropanol or cyclobutanol. This tandem reaction enables the production of a wide range of nonracemic functionalizable α‐quaternary‐δ‐carbonyl cycloketones in high yields and excellent enantioselectivity from simple aldehydes and allylic alcohols. As a key step, the intramolecular reaction was also successfully applied in the asymmetric total synthesis of (+)‐cerapicol.
Total Synthesis of the Cyclic Depsipeptide Vioprolide D via its (Z)‐Diastereoisomer
Authors: Grab Hanusch A. , Kirsch Volker C. , Sieber Stephan A. , Bach Thorsten 
Published: March 2020

AbstractThe first total synthesis of vioprolide D was accomplished in an overall yield of 2.0 % starting from methyl (2S)‐3‐benzyloxy‐2‐hydroxypropanoate (16 steps in the longest linear sequence). The cyclic depsipeptide was assembled from two building blocks of similar size and complexity in a modular, highly convergent approach. Peptide bond formation at the C‐terminal dehydrobutyrine amino acid of the northern fragment was possible via its (Z)‐diastereoisomer. After macrolactamization and formation of the thiazoline ring, the (Z)‐double bond of the dehydrobutyrine unit was isomerized to the (E)‐double bond of the natural product. The cytotoxicity of vioprolide D is significantly higher than that of its (Z)‐diastereoisomer.
Pneumothorax following serratus anterior plane block
Authors: Desai M. , Narayanan M. K. , Venkataraju A. 
Published: March 2020

SummarySerratus anterior plane blocks may provide analgesia for rib fractures, thoracic surgery and breast surgery. There remains uncertainty regarding the location of injection, be it superficial or deep to the serratus anterior muscle. We describe the case of a 63‐year‐old ASA physical status 3 woman undergoing a wire‐guided wide local excision of a right breast lump. A modified right serratus anterior plane block was performed under ultrasound guidance, injecting 20 ml of bupivacaine 0.25% deep to the serratus anterior muscle. No immediate complications were noted. Intra‐operatively the patient developed arterial desaturation associated with high airway pressures. A subsequent chest radiograph in the post‐anaesthetic care unit demonstrated a large right‐sided pneumothorax which was treated with immediate needle decompression and chest drain insertion. This is the first case of pneumothorax reported from this approach to serratus anterior plane blockade and serves as a reminder of a potential serious complication.
Improvement of polyamide/thermoplastic polyurethane blends with polyamide 6‐polyurethane copolymer prepared via suspension polymerization as compatibilizer
Authors: Zou Xiaoxuan , Liu Bin , Wen Jiaoxian , Zeng Wen , Jing Bo , Dai Wenli 
Published: March 2020

AbstractThe polyamide 6‐polyurethane copolymer (PA6‐b‐PU‐b‐PA6) was synthesized through anionic suspension polymerization and then mixed with polyamide 6/thermoplastic polyurethane (PA6/TPU) and polyamide 6, 6/thermoplastic polyurethane (PA66/TPU) blends using as the compatibilizer. The results show that the PA6‐b‐PU‐b‐PA6 copolymers powders several can be obtained through suspension polymerization using dimethicone as disperse medium. The average diameter of PA6‐b‐PU‐b‐PA6 copolymer powders decreased with the increasing of PU content. With the addition of PA6‐b‐PU‐b‐PA6, the TPU phase dispersed more uniformly in PA6 or PA66 matrix, and the size of TPU dispersed phase decreased obviously. The PA6‐b‐PU‐b‐PA6 copolymer with higher PU content shows better compatibilizing effect. Addition of PA6‐b‐PU‐b‐PA6 can improve both strength and toughness of the PA/TPU blends. When the amount of PA6‐PU25% copolymer was 5 phr, the tensile strength and notched impact strength of PA6/TPU/PA6‐PU25% blends increased 29 and 159.4%, respectively, compared to the PA6/TPU blend without compatibilizer.