bluuebunny/crossref_metadata_2025_split huggingface dataset:
A highly sensitive PNA‐microarray system for miRNA122 recognition
Authors: Forte Giuseppe , Ventimiglia Giorgio , Pesaturo Massimiliano , Petralia Salvatore 
Published: February 2022

AbstractSurface chemistry is a fundamental aspect of the development of the sensitive biosensor based on microarray technology. Here, an advanced PNA‐microarray system for the detection of miRNA, composed by a multilayered Si/Al/Agarose component, is described. A straightforward optical signal enhancement is achieved thanks to a combination of the Al film mirror effect and the positive interference for the emission wavelength of the Cy5 fluorescent label tuned by the agarose film. The PNA‐microarray was investigated for the detection of miRNA_122, resulting in a sensitivity of about 1.75 μM–1 and Limit of Detection in the range of 0.043 nM as a function of the capture probe sequence. The contribution, in terms of H‐bonds amounts at 298 and 333 K, of the agarose coating to the dsPNA‐RNA interactions was demonstrated by Molecular Dynamic simulations. These results pave the way for advanced sensing strategies suitable for the environmental monitoring and the public safety.
Inexpensive protein overexpression driven by the NarL transcription activator protein
Authors: Hothersall Joanne , Lai Sandie , Zhang Nan , Godfrey Rita E. , Ruanto Patcharawarin , Bischoff Sarah , Robinson Colin , Overton Tim W. , Busby Stephen J. W. , Browning Douglas F. 
Published: February 2022

AbstractMost Escherichia coli overexpression vectors used for recombinant protein production (RPP) depend on organic inducers, for example, sugars or simple conjugates. However, these can be expensive and, sometimes, chemically unstable. To simplify this and to cut the cost of RPP, we have developed vectors controlled by the Escherichia coli nitrate‐responsive NarL transcription activator protein, which use nitrate, a cheap, stable, and abundant inorganic ion, to induce high‐level controlled RPP. We show that target proteins, such as green fluorescent protein, human growth hormone, and single‐chain variable region antibody fragments can be expressed to high levels using our promoter systems. As nitrate levels are high in many commercial fertilizers, we demonstrate that controlled RPP can be achieved using readily available and inexpensive garden products.
Circular economy adoption barriers: An extended fuzzy best–worst method using fuzzy DEMATEL and Supermatrix structure
Authors: Govindan Kannan , Nasr Arash Khalili , Karimi Farzane , Mina Hassan 
Published: February 2022

AbstractIn the real world, there are complex decision‐making problems in which a variety of intertwined factors and hierarchical structures exist, and it is difficult or impossible to solve these problems using classical methods. The prioritization of circular economy (CE) adoption barriers is one such complex problem that cannot be solved using current classical methods. Hence, in this paper, for the first time, a new method, namely, FBWDS, is developed. FBWDS derives from the combination of fuzzy best–worst method (BWM), fuzzy decision‐making trial and evaluation laboratory (DEMATEL), and Supermatrix structure. This proposed method establishes weights of the intertwined factors in hierarchical networks under uncertainty; these weighted factors and their interdependencies are calculated using the fuzzy BWM and fuzzy DEMATEL techniques, respectively. In addition, the Supermatrix structure is applied to integrate the results of these two techniques. The proposed approach efficiency is evaluated in the field of the CE adoption barriers using data from a cable and wire industry in Iran. The results showed that “high setup costs,” “financial limitations,” and “absence of public awareness about CE” rank as the most challenging barriers, and “lack of standards for designing recycled products” and “absence of standard system to evaluate performance” are the least important barriers to CE adoption in the cable and wire industry.
Human study on cancer diagnostic probe (CDP) for real‐time excising of breast positive cavity side margins based on tracing hypoxia glycolysis; checking diagnostic accuracy in non‐neoadjuvant cases
Authors: Miripour Zohreh Sadat , Abbasvandi Fereshteh , Aghaee Parisa , Shojaeian Fatemeh , Faramarzpour Mahsa , Mohaghegh Pooneh , Hoseinpour Parisa , Namdar Naser , Hassanpour Amiri Morteza , Ghafari Hadi , Parniani Mohammad , Kaviani Ahmad , Alamdar Sedigheh , NajafiKhoshnoo Sahar , Sanati Hassan , Mapar Mahna , Sadeghian Nastaran , Akbari Mohammad Esmaeil , Yunesian Masud , Abdolahad Mohammad 
Published: February 2022

AbstractBackgroundCancer diagnostic probe (CDP) had been developed to detect involved breast cavity side margins in real‐time (Miripour et al. Bioeng Transl Med. e10236.). Here, we presented the results of the in vivo human model CDP studies on non‐neoadjuvant cases.MethodsThis study is a prospective, blind comparison to a gold standard, and the medical group recruited patients. CDP and frozen data were achieved before the permanent pathology experiment. The main outcome of the study is surgical margin status. From November 2018 to April 2020, 202 patients were registered, and 188 were assigned for the study. Breast‐conserving surgery at any age or gender, re‐surgery due to re‐currency, or involved margins are acceptable. Patients must be non‐neoadjuvant. The reliability of CDP scoring had been evaluated by the pathology of the scored IMs. Then, three models of the study were designed to compare CDP with the frozen sections. Receiver operating characteristic (ROC) curves and AUC were measured based on the permanent postoperative pathology gold standard.ResultsA matched clinical diagnostic categorization between the pathological results of the tested IMs and response peaks of CDP on 113 cases, was reported (sensitivity = 97%, specificity = 89.3%, accuracy = 92%, positive predictive value (PPV) = 84.2%, and negative predictive value (NPV) = 98%). Study A showed the independent ability of CDP for IM scoring (sensitivity = 80%, specificity = 90%, accuracy = 90%, PPV = 22.2%, and NPV = 99.2%). Study B showed the complementary role of CDP to cover the missed lesions of frozen sections (sensitivity = 93.8%, specificity = 91%, accuracy = 91%, PPV = 55.6%, and NPV = 99.2%). Study C showed the ability of CDP in helping the pathologist to reduce his/her frozen miss judgment (specificity = 92%, accuracy = 93%, PPV = 42.1%, and NPV = 100%). Results were reported based on the post‐surgical permanent pathology gold standard.ConclusionCDP scoring ability in intra‐operative margin detection was verified on non‐neoadjuvant breast cancer patients. Non‐invasive real‐time diagnosis of IMs with pathological values may make CDP a distinct tool with handheld equipment to increase the prognosis of breast cancer patients.
Blastomycosis‐like pyoderma in an immunocompetent patient
Authors: Sahli Fatma , Litaiem Noureddine , Gara Soumaya , Charfi Olfa , Rammeh Soumaya , Zeglaoui Faten 
Published: February 2022

AbstractBlastomycosis‐like pyoderma is a rare skin disorder most commonly caused by bacterial infection. It is usually diagnosed in immunocompromised patients. We report a case of BLP in an immunocompetent woman, who presented with a 6‐week history of verrucous cutaneous plaque of the left wrist.
Integrating CdS and Titanium Oxide Clusters with Molecular Redox Catalysts into Metal‐Organic Frameworks Promoting Photocatalytic Efficient H2 Evolution
Authors: Su Wen‐Hui , Wang Feng‐Dong , Rong Yi , Xu Meng‐Yao , Zhang Chen‐Xi , Yang Li‐Bin 
Published: February 2022

AbstractA new quaternary crystalline catalyst was obtained by a mixed hydrothermal method of integrating inorganic semiconductors, titanium oxide cluster (TOC) and molecular redox centers orderly into metal organic framework (MOF) materials. It shows a hydrogen production rate 3711.53 μmol g−1 h−1 under visible light irradiation, exceeds most of the same type of catalyst reported in recent years, and a favorable stability with. The excellent performance of the CdS/TOC/UiO‐67‐bpy/Co composites due to efficient promotion of photo‐induced carrier separation and migration, and offering abundant active sites for generating hydrogen. This work will help to guide the preparation of new efficient and stable photocatalysts and promote the effective conversion of solar energy to chemical energy.
Hole/Electron Transporting Materials for Nonfullerene Organic Solar Cells
Authors: Xu Xiaopeng , Peng Qiang 
Published: February 2022

AbstractNonfullerene acceptor based organic solar cells (NF‐OSCs) have witnessed rapid progress over the past few years owing to the intensive research efforts on novel electron donor and nonfullerene acceptor (NFA) materials, interfacial engineering, and device processing techniques. Interfacial layers including electron transporting layers (ETL) and hole transporting layers (HTLs) are crucially important in the OSCs for facilitating electron and hole extraction from the photoactive blend to the respective electrodes. In this review, the lates progress in both ETLs and HTLs for the currently prevailing NF‐OSCs are discussed, in which the ETLs are summarized from the categories of metal oxides, metal chelates, non‐conjugated electrolytes and conjugated electrolytes, and the HTLs are summarized from the categories of inorganic and organic materials. In addition, some bifunctional interlayer materials served as both ETLs and HTLs are also introduced. Finally, the prospects of ETL/HTL materials for NF‐OSCs are provided.
Syntheses of Anthracene‐Centered Large PAH Diimides and Conjugated Polymers**
Authors: Shi Wenjing , Yang Xiao , Li Xingye , Meng Linghao , Zhang Di , Zhu Ziqi , Xiao Xiao , Zhao Dahui 
Published: February 2022

AbstractPolycyclic aromatic hydrocarbon (PAH) structures with suitable electron‐withdrawing groups are useful building blocks for developing optical and electron‐transporting materials. Here, we report the application of a double benzannulation process to the syntheses of PAH diimides with enlarged π‐frameworks featuring a central anthracene moiety. The preparations are realized by copper‐catalyzed [4+2] cycloaddition of ethynyl‐substituted aromatic dicarboximide to 2,5‐bis(phenylethynyl)terephthalaldehyde, followed by intramolecular photocyclization or direct arylation via Heck cross coupling. A central symmetric benzo[1,2‐k:4,5‐k′]‐bis(fluoranthene)‐3,4,12,13‐tetracarboxyl diimide (BFDI) is acquired, with the single crystal structure revealing its completely planar polycyclic skeleton. Such a shape‐persistent PAH expectedly exhibits a tendency to stack face‐to‐face and forms J‐aggregates. Moreover, BFDI can be difunctionalized site‐selectively at the reactive 9 and 10 positions of the anthracene unit and then applied to prepare conjugated polymers. When coupled with 1,4‐diketopyrrolo[3,4‐c]‐pyrrole (DPP) via thiophene and dithiophene linkers, two polymers with significantly broadened absorption bands extended to the near‐infrared regime are obtained, evidencing the effective π‐conjugative extension ability of BFDI unit.
2‐Amino‐4‐aryl‐5‐oxo‐4,5‐dihydropyrano[3,2‐c]chromene‐3‐carbonitriles with Microtubule‐Disruptive, Centrosome‐Declustering, and Antiangiogenic Effects in vitro and in vivo
Authors: Köhler Leonhard H. F. , Reich Sebastian , Begemann Gerrit , Schobert Rainer , Biersack Bernhard 
Published: February 2022

AbstractA series of fifteen 2‐amino‐4‐aryl‐5‐oxo‐4,5‐dihydropyrano[3,2‐c]chromene‐3‐carbonitriles (1 a–o) were synthesized via a three‐component reaction of 4‐hydroxycoumarin, malononitrile, and diversely substituted benzaldehydes or pyridine carbaldehydes. The compounds were tested for anticancer activities against a panel of eight human tumor cell lines. A few derivatives with high antiproliferative activities and different cancer cell specificity were identified and investigated for their modes of action. They led to microtubule disruption, centrosome de‐clustering and G2/M cell cycle arrest in 518 A2 melanoma cells. They also showed anti‐angiogenic effects in vitro and in vivo.
Catalytic Potential of Post‐Transition Metal Doped Graphene‐Based Single‐Atom Catalysts for the CO2 Electroreduction Reaction
Authors: Lambie Stephanie , Low Jian Liang , Gaston Nicola , Paulus Beate 
Published: February 2022

AbstractCatalysts are required to ensure electrochemical reduction of CO2 to fuels proceeds at industrially acceptable rates and yields. As such, highly active and selective catalysts must be developed. Herein, a density functional theory study of p‐block element and noble metal doped graphene‐based single‐atom catalysts in two defect sites for the electrochemical reduction of CO2 to CO and HCOOH is systematically undertaken. It is found that on all of the systems considered, the thermodynamic product is HCOOH. Pb/C3, Pb/N4 and Sn/C3 are identified as having the lowest overpotential for HCOOH production while Al/C3, Al/N4, Au/C3 and Ga/C3 are identified as having the potential to form higher order products due to the strength of binding of adsorbed HCOOH.
Energy‐efficient resource allocation in heterogeneous networks under different backhaul capacity constraints
Authors: Zheng Handan , Li Li 
Published: February 2022

SummaryIn heterogeneous networks (HetNets), sharply increasing data traffic exacerbates the rapid growth in the network energy consumption and at the same time brings tremendous pressure on the backhaul links. Aiming at improving the network energy efficiency (EE) and relieving backhaul data volume traffic pressure, in this paper, we investigate energy efficient resource allocation which restricts small cell data traffic by imposing different kinds of backhaul capacity constraints (BCCs) on small cells, including small cell BCC (SBCC) and macrocell BCC (MBCC). We formulate the joint resource block (RB) and power allocation problem as a fractional programming problem. By using variable relaxation and replacement, we convert this nonconvex optimization problem into a concave–convex fractional programming problem, which can further be converted into a parametric convex problem and solved by convex optimization theory. Based on the Dinkelbach and dual decomposition methods, we propose iterative resource allocation algorithms under different BCCs, where RB and power are jointly allocated among users in each cell. Numerical results reveal that the proposed algorithms have good convergence performance and also evaluates the impact of both SBCC and MBCC on network performance.
Association of plasma glial fibrillary acidic protein (GFAP) with neuroimaging of Alzheimer's disease and vascular pathology
Authors: Shir Dror , Graff‐Radford Jonathan , Hofrenning Ekaterina I. , Lesnick Timothy G. , Przybelski Scott A. , Lowe Val J. , Knopman David S. , Petersen Ronald C. , Jack Clifford R. , Vemuri Prashanthi , Algeciras‐Schimnich Alicia , Campbell Michelle R. , Stricker Nikki H. , Mielke Michelle M. 
Published: February 2022

AbstractIntroduction: Plasma glial fibrillary acidic protein (GFAP) may be associated with amyloid burden, neurodegeneration, and stroke but its specificity for Alzheimer's disease (AD) in the general population is unclear. We examined associations of plasma GFAP with amyloid and tau positron emission tomography (PET), cortical thickness, white matter hyperintensities (WMH), and cerebral microbleeds (CMBs). Methods: The study included 200 individuals from the Mayo Clinic Study of Aging who underwent amyloid and tau PET and magnetic resonance imaging and had plasma GFAP concurrently assayed; multiple linear regression and hurdle model analyses were used to investigate associations controlling for age and sex. Results: GFAP was associated with amyloid and tau PET in multivariable models. After adjusting for amyloid, the association with tau PET was no longer significant. GFAP was associated with cortical thickness, WMH, and lobar CMBs only among those who were amyloid‐positive. Discussion: This cross‐sectional analysis demonstrates the utility of GFAP as a plasma biomarker for AD‐related pathologies.
Moderating effects of environmental stressors on the development of attention to threat in infancy
Authors: Burris Jessica L. , Reider Lori B. , Oleas Denise S. , Gunther Kelley E. , Buss Kristin A. , Pérez‐Edgar Koraly , Field Andy P. , LoBue Vanessa 
Published: February 2022

AbstractAn attention bias to threat has been linked to psychosocial outcomes across development, including anxiety (Pérez‐Edgar, K., Bar‐Haim, Y., McDermott, J. M., Chronis‐Tuscano, A., Pine, D. S., & Fox, N. A. (2010). Attention biases to threat and behavioral inhibition in early childhood shape adolescent social withdrawal. Emotion (Washington, D.C.), 10(3), 349). Although some attention biases to threat are normative, it remains unclear how these biases diverge into maladaptive patterns of emotion processing for some infants. Here, we examined the relation between household stress, maternal anxiety, and attention bias to threat in a longitudinal sample of infants tested at 4, 8, and 12 months. Infants were presented with a passive viewing eye‐tracking task in which angry, happy, or neutral facial configurations appeared in one of the four corners of a screen. We measured infants’ latency to fixate each target image and collected measures of parental anxiety and daily hassles at each timepoint. Intensity of daily parenting hassles moderated patterns of attention bias to threat in infants over time. Infants exposed to heightened levels of parental hassles became slower to detect angry (but not happy) facial configurations compared with neutral faces between 4 and 12 months of age, regardless of parental anxiety. Our findings highlight the potential impact of the environment on the development of infants’ early threat processing and the need to further investigate how early environmental factors shape the development of infant emotion processing.
(Spectro)Electrochemistry of 3‐(Pyrid‐2‐yl)‐s‐Tetrazine‐ and 1,2‐ (Dihydro)pyridazine Tricarbonylrhenium(I)chloride
Authors: Schnierle Marc , Winkler Mario , Filippou Vasileios , van Slageren Joris , Ringenberg Mark R. 
Published: February 2022

AbstractThe electrochemistry and spectroelectrochemistry (SEC) of the three [ReCl(CO)3(N
N)], N
N=3‐(pyrid‐2‐yl)‐1,2,4,5‐tetrazine [1], 3‐(pyrid‐2‐yl)‐4‐ferrocenyl‐4,5‐dihydropyridazine [1H2Fc], and 3‐(pyrid‐2‐yl)‐4‐ferrocenyl‐pyridazine [1Fc], are reported. The ligand's conjugation affects the reduction potentials as well as intramolecular charge transfers observed in the UV‐vis‐NIR spectrum. The spectroscopic observations were further supported by DFT calculations.
Lewis Pair Polymerization of Alkyl Methacrylate by Amidinato Silicon Compounds and Tris(pentafluorophenyl)borane
Authors: Chia Cher‐Chiek , Li Yan , Xiao Longqiang , Yang Ming‐Chung , Su Ming‐Der , So Cheuk‐Wai 
Published: February 2022

Abstract0.5 mol% of the amidinato disilyne [LSi:]2 (1, L=PhC(NtBu)2) and 1 mol% of B(C6F5)3 cooperatively polymerized methyl methacrylate (MMA) to form poly(MMA) with the H and CH2C(=CH2)COMe end groups (P1, Mn=3.1×103 gmol−1; repeating unit, n=31; polydispersity index, Đ: 1.55). The catalytic mechanism is proposed, where compound 1 could react with MMA and B(C6F5)3 to form a zwitterionic active species [LSi{CH2C(Me)=C(OMe)O}B(C6F5)3]2. The latter could activate MMA molecules affording poly(MMA) chains on the silicon centers. The methyl group of the last enolate of a poly(MMA) chain on a silicon center could then react with the Si−C bond of the adjacent poly(MMA) chain to form P1, as well as regenerate compound 1 and B(C6F5)3. When compound 1 was replaced by the amidinato amidosilylene [LSiN(SiMe3)2] (2), 1 mol% of compound 2 and 1 mol% of B(C6F5)3 mediated living MMA polymerization in toluene to form the poly(MMA) P2 (Mn=1.04×104 gmol−1; Đ: 1.97).
Role of imidazolium cations on the interfacial structure of room‐temperature ionic liquids in contact with Pt(111) electrodes
Authors: Ratschmeier Björn , Braunschweig Björn 
Published: February 2022

AbstractRoom‐temperature ionic liquids (ILs) have gained considerable attention as an important addition to conventional electrolytes because they exhibit large electrochemical windows and can reduce existing overpotentials in electrocatalysis. For the interfacial electrochemistry of ILs, a comprehensive understanding of molecular ions and the resulting electric double‐layer structures as a function of electrode potential is mandatory, but the structures are largely different from conventional electrolytes. For that reason, we have studied the interfaces of Pt(111) in contact with ILs using 1‐butyl‐3‐methylimidazolium [BMIM] and 1‐butyl‐2,3‐dimethylimidazolium [BMMIM] cations as well as bis(trifluoromethylsulfonyl)imide [NTf2] anions. We applied vibrational sum‐frequency generation (SFG), where we interrogate vibrational bands from interfacial cations, anions, as well as interfacial water in situ and under potential control. Structuring of [NTf2] anions and H2O with electrode potential show hysteresis while a strong Stark tuning was absent. This indicates that the IL ions are oriented in the vicinity of the interface, without being directly adsorbed to the Pt(111) surface. Using the C‐H stretching band from CH groups at the imidazolium ring, the ring reorientation with electrode potential was qualitatively determined. The imidazolium ring reorients as a function of potential from a more parallel orientation to an upright orientation with respect to the interfacial plane. This leads to the formation of voids in the layered structure of ions at the interface, which can be then filled with H2O as evidenced by an increased SFG intensity from O‐H stretching modes that are attributable to hydrogen‐bonded interfacial water. Comparing the responses of the ILs, particularly of [BMMIM][NTf2], shows a compact structure and a significantly pronounced rearrangement of the imidazolium ring that can also facilitates better incorporation of H2O and significantly affects the reorientation of [NTf2] anions and, thus, causes a pronounced hysteresis with electrode potential.
Genome‐wide detection of ultralow‐frequency substitution mutations in cultures of mouse lymphoma L5178Y cells and Caenorhabditis elegans worms by PacBio sequencing
Authors: Miranda Jaime A. , Alund Alexander W. , Yan Jian , McKinzie Page B. , Dobrovolsky Vasily N. , Revollo Javier R. 
Published: February 2022

AbstractMany conventional genetic toxicology assays require specialized cell cultures or animals and can only detect mutations that inactivate the function of a reporter gene. These limitations make such assays incompatible with many toxicological models but could be overcome by the development of techniques capable of directly detecting genome‐wide somatic mutations through DNA sequencing. PacBio sequencing can generate almost error‐free consensus reads by repeatedly inspecting both DNA strands from circularized molecules (a method known as PacBio HiFi). In this study, we show that PacBio HiFi can detect genome‐wide ultralow‐frequency substitution mutations in cultures of mouse lymphoma L5178Y cells and Caenorhabditis elegans worms. The mutation frequencies (MFs) of unexposed samples in both models were ~1 × 10−7 mutations per base pair. Compared to these controls, PacBio HiFi detected MF increases of 23‐fold in cultures of L5178Y cells exposed to 5 mM ethyl methanosulfonate (EMS) for 4 h, and 5‐, 12‐, and 29‐fold in cultures of C. elegans worms exposed to 12.5, 25, and 50 mM EMS for 4 h, respectively. In both models, the mutation spectra of controls were diverse, while those derived from EMS‐exposed samples were dominated by C:G → T:A transitions. To validate these results, clone sequencing analyses were performed on the same cultures of L5178Y cells. The results obtained by clone sequencing and PacBio HiFi were almost identical. Our results suggest that PacBio sequencing could be used for the detection, quantitation, and characterization of mutations in any DNA‐containing sample, including those that are not compatible with conventional mutation detection approaches.