Materials Literature
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Aliphatic polyesters are melt mixed with bioactive fillers and converted into sheets in order to compare their degradation behavior in a phosphate buffer saline (PBS) solution as a function of processing method, polymer type, and crystallinity and type of filler. The samples are tested for weight changes, pH, intrinsi…
The homopolymer of 1,4-dioxane-2-one (pDO) is well known as an established biomaterial, especially for degradable surgical sutures. Well-defined α,ω-dihydroxy telechelics based on pDO are introduced in this paper. pDO was synthesized via a one step reaction modified to a literature procedure with a yield of 50–60%. Th…
Porous interlayer dielectric films with interconnected pores pose a serious challenge for their integration into next-generation microchips.The opening of interconnected pores in the surface region needs to be sealed to prevent intrusion of atomic layer deposition precursors used to create metal diffusion barriers.In…
Hydrogen evolution on (111) diamond electrode surfaces was studied by hybrid density functional theory with cluster models. The reductive hydronium ion discharge in the Volmer-Heyrovsky (V-H) mechanism to form was found to be activated when there was either a bond-inserted interstitial hydrogen defect or a substitutio…
Magnetization measurements and differential thermal analysis (DTA) of polycrystalline MnBi were carried out in magnetic fields up to 14 T and in 300–773 K, in order to investigate the magnetic phase transition. The magnetic phase transition temperature (Tt) at a zero magnetic field is 628 K and linearly increases with…
In this article, the draw ratio of elastic core yarn (Spandex filament 44 dtex/f4) was regulated from 2.7 to 4.41 (i.e., 2.7, 3.22, 3.49, and 4.41) by using a developed positive feed drive and a microcontroller system. The elastic core positioning (left, center, and right) in front roller nip of ring frame was also ch…
New hexaalkoxydibenzo[a,c]phenazines (HDBPs) with six-carbon long chains have been prepared, and their mesogenic behavior investigated. The incorporation of six peripheral alkoxy groups onto the larger, dipolar core bearing nitrogen atoms showed interesting thermal properties. The crystal-to-mesophase transitions for…
BACKGROUND: Recurrent malignant glioma has a dismal prognosis, and therapeutic options are scarce. After previous potentially encouraging reports on liposomal pegylated doxorubicin (PEG-DOX) in this setting, PEG-DOX was applied to patients with recurrent malignant glioma in an institutional series. METHODS: In a retro…
Di- and triporphyrin arrays consisting of 5,15-diphenylporphyrinatomagnesium(II) (MgDPP) coordinated to free-base and Ni(II) porphyrinyl mono- and bis-phosphine oxides, as well as the self-coordinating diphenyl[10,20-diphenylporphyrinatomagnesium(II)-5-yl]phosphine oxide [MgDPP(Ph(2)PO)], were synthesised in excellent…
The onset of antiferromagnetic transition, spin reorientation, and spin compensation of TmFeO3 single crystals were investigated by the magnetic and heat capacity measurements. Control of spin reorientation by magnetic field and anomalous hysteretic behavior in domain switching were clarified. No appreciable magnetodi…
We describe a novel and facile method for the fabrication of reconstituted silk monoliths with ordered interconnected air spheres based on intercalation and β-sheet transformation of regenerated silk fibroin solutions within the interstitial spaces of a sacrificial colloidal crystal template. The silk inverse opals ar…
In this paper, we report the use of lead sulfide quantum dot (PbS QD) bioconjugates as near infrared (NIR) contrast agents for targeted molecular imaging with expanded emission wavelengths beyond 1000 nm. The red-shifted emission band, coupled with the small particle size, which will facilitate clearance, both afford…
The drug molecule Propranolol has been encapsulated by a sol-gel process in an organic-inorganic hybrid matrix by in-situ self-assembly; the 2D HETCOR solid state NMR spectroscopy provides direct proof of the intimate spatial relationship between the host matrix and guest drug molecules.
Recently, much attention has been directed toward the study of Sc-doped zirconia electrolyte for intermediate-temperature SOFCs (IT-SOFCs) due to its fairly good ionic conductivity compared with conventional Y-doped zirconia, which can reduce the internal ohmic loss of the cell. For improving unit cell performance, an…
Skeletal biominerals often show complex morphologies and ultrastructures that are important for their mechanical function. The production of these biomineral structures requires exact control over mineral precipitation, which takes place under physiological conditions in the presence of gel-like organic matrices. Unde…
The use of a new O,N,N,O chelate has led to two new Fe6 and Fe18 molecular compounds, the latter with an unusual double-headed serpentine chain structure.
In this paper, we report a clever approach permitting, in one step, the synthesis of ordered (hexagonal phase) mesoporous silica functionalized with iodopropyl groups [I(CH2)3] located in the pore channels. This material was obtained by the hydrolysis and co-condensation of tetraethylorthosilicate (TEOS) and iodopropy…
A luminescent nonanuclear terbium(III) hydroxo cluster, Tb(9)(Hesa)(16)(mu-OH)(10)(NO(3)) (Hesa: hexyl salicylate), stabilized by unique two-way phenyl ring interactions, pi-pi stackings (d = 3.482-3.599 A) and C-H-pi interactions (d = 2.75-3.03 A) between adjacent pairs of salicylates, was structurally characterized…
Purpose: In this paper we report in vitro and in vivo results of Nanocrystalline Diamond Coatings which are used in medicine onto medical implants The very important property of carbon coatings is the protection living organism against the metalosis. Different medical implants with complicated shapes are covering by N…
The most common nonlinear equations of motion for the pulsation of a spherical gas bubble in an infinite body of liquid arise in the various forms of the Rayleigh-Plesset equation, expressed in terms of the dependency of the bubble radius on the conditions pertaining in the gas and liquid. However over the past few de…