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Spectroscopic studies on the formation of charge transfer complexes of L-phenylalanine with 2,3,5-trichloro-6-alkoxy-1,4-benzoquinones in aqueous medium
UV-Vis, FT-IR, LC-MS and fluorescence spectral techniques were employed to investigate the mechanism of interaction of L-phenylalanine with new π-acceptors, 6-alkoxy-2,3,5-trichloro-1,4-benzoquinones. The interaction of these quinones with L-phenylalanine (LPA) yielding radical ion pair was found to proceed through the formation of donor-acceptor complex. The stoichiometry of the complexes was...


Enhancing the wet strength of lignocellulosic fibrous networks using photo-crosslinkable polymers
Wet strengthening of paper products is typically performed by thermo-crosslinking reactive polymers or polymer precursors. In this article we introduce a novel concept for generating wet-strength paper grades by using photoreactive polymers and light as the energy source. Statistical, hydrophilic copolymers of dimethylacrylamide and benzophenone-methacrylate monomer, respectively, were synthesi...
In situ decoration of TiO 2 nanoparticles on the surface of cellulose fibers and study of their photocatalytic and antibacterial activities
A facile single-step hydrothermal method was used for the decoration of titania (TiO2) nanoparticles (diameter ca. 40–250 nm) on the surface of cellulose fibers. These cellulose fibers decorated with TiO2 nanoparticles were used to prepare paper matrices by the handsheet-making procedure. The papers showed excellent photocatalytic activity by degrading methyl orange in the presence of UV lig...


Structure and morphology of fractions separated from mechanical-assisted enzyme hydrolyzed chitin microfibrils
Chitin whiskers with diameter of 10–50 nm were prepared by a green way of mechanical-assisted enzyme hydrolysis, and several nanowhisker fractions were successfully separated by centrifugation at 3,000, 5,000, and 7,000 rpm, respectively. The size, morphology and crystalline form of as-prepared nanowhiskers were analyzed by scanning electron microscopy, transmission electron microscopy and ...
Influences of nanoclays on the flame retardancy of fiber-filled and unfilled polyamide-6 with and without aluminum diethylphosphinate
The objective of this study was to investigate contribution of nanoclays to the flame retardancy of polyamide-6 and its 15 wt% short glass fiber–reinforced composite with and without an organophosphorus flame-retardant aluminum diethylphosphinate. Nanocomposites were compounded by melt mixing method via twin-screw extruder, and the specimens for testing and analyses were shaped by injecti...


Population Pharmacokinetic Analysis of Tesamorelin in HIV-Infected Patients and Healthy Subjects
Tesamorelin is a synthetic analogue of growth hormone-releasing factor (GRF), which increases basal and pulsatile growth hormone (GH) secretion and subsequently increases insulin-like growth factor (IGF)-Limited information is available about the pharmacokinetics of this compound. Consequently, the aim of this study was to characterize the population pharmacokinetics of tesamorelin in HIV-infec...
Enhancement of adhesion between inorganic nanoparticles and polymeric matrix in nanocomposite by introducing polymeric thin film onto nanoparticles
Herein, we demonstrate an efficient pathway to improve both affinity and adhesion at interfaces between inorganic nanoparticles and organic polymer matrix by vapor phase incorporation of organic thin layers. The polymeric thin films with an average thickness of a few ∼tens of nanometers were introduced onto the surface of inorganic nanoparticle by vapor deposition polymerization method. Diver...

The tongue-tied chameleon: The role of nonconscious mimicry in the behavioral confirmation process
The current study examines whether mimicry of negative behaviors occurs in ongoing social interactions, and whether mimicry may be a process through which one person's negative expectations lead to another person's expectancy-consistent behaviors. Using a simulated phone interview, applicant participants heard questions from an interviewer in either a neutral or negative tone of voice. Audio-re...
Ant–plant interactions: the importance of extrafloral nectaries versus hemipteran honeydew on plant defense against herbivores
The two most important ant–plant attractions are extrafloral nectaries (EFNs) and hemipteran honeydew. In both cases, ants may offer an effective protection against natural enemies of plants, in exchange for its sugar-rich exudates. The aim of this paper was to compare the efficiency of ant protection between plants with EFNs and with hemipteran honeydew. The study was carried out in the Amaz...

Exchanging and using research evidence in health policy networks: a statistical network analysis
Evidence-informed health policymaking is a goal of equitable and effective health systems but occurs infrequently in reality. Past research points to the facilitating role of interpersonal relationships between policy-makers and researchers, imploring the adoption of a social network lens. This study aims to identify network-level factors associated with the exchange and use of research evidenc...
An Aggregation-Induced-Emission Platform for Direct Visualization of Interfacial Dynamic Self-Assembly
An in-depth understanding of dynamic interfacial self-assembly processes is essential for a wide range of topics in theoretical physics, materials design, and biomedical research. However, direct monitoring of such processes is hampered by the poor imaging contrast of a thin interfacial layer. We report in situ imaging technology capable of selectively highlighting self-assembly at the phase bo...

Eine neue Ära in der quantenchemischen Berechnung der Gitterenergie von Molekülkristallen
Nahe an der Wirklichkeit: In jüngsten Studien ist es gelungen, die Gitterenergie von kristallinem Benzol mit einer Genauigkeit von weniger als 1 kJ mol−1 quantenchemisch zu berechnen. Die Grundlage für dieses Ergebnis war die Kombination eines Fragmentierungsansatzes mit modernen Elektronenstrukturmethoden.
Eine mehrfach funktionalisierte Basen-koordinierte GeII-Verbindung und ihre reversible Dimerisierung zum Digermen
Stabile Verbindungen mit GeGe-Bindung werden üblicherweise unter relativ harschen Reaktionsbedingungen hergestellt, die mit vielen funktionellen Gruppen inkompatibel sind. Insbesondere werden ungesättigte Funktionalitäten wegen ihrer hohen Reaktivität gegenüber niedrigkoordinierten Germaniumverbindungen nicht toleriert. Wir berichten nun über die Synthese einer iminofunktionalisierten, du...
Cell-Derived Vesicles for Single-Molecule Imaging of Membrane Proteins
A new approach is presented for the application of single-molecule imaging to membrane receptors through the use of vesicles derived from cells expressing fluorescently labeled receptors. During the isolation of vesicles, receptors remain embedded in the membrane of the resultant vesicles, thus allowing these vesicles to serve as nanocontainers for single-molecule measurements. Cell-derived ves...
A Noncanonical Function of Sortase Enables Site-Specific Conjugation of Small Molecules to Lysine Residues in Proteins
We provide the first demonstration that isopeptide ligation, a noncanonical activity of the enzyme sortase A, can be used to modify recombinant proteins. This reaction was used in vitro to conjugate small molecules to a peptide, an engineered targeting protein, and a full-length monoclonal antibody with an exquisite level of control over the site of conjugation. Attachment to the protein substr...