When a biomaterial comes in contact with a biological body, biological substance denaturation will be concomitant with the physical interaction between the biomaterial surface and biological substance, such as blood protein denaturation resulting from electrical charge transfer. In this study, we investigated the relationship between the physical properties of amorphous hydrogenated carbon (a-C...

ABSTRACT Since radiocarbon accelerator mass spectrometry ( 14 C AMS) is considered a high-precision technique, reassessment of the measurement uncertainty has been topic interest. Scientists from analytical and metrological fields have developed top-down bottom-up approaches. The quoted error should approximate long-term repetitions approach in order to be realistic. novelty this paper that bot...

Abstract Petroleum pitch‐based graphite blocks (GBs) attract considerable attention owing to their low cost, high yield, and possible application as heat sink components. However, no studies have systematically investigated the particle size distribution of GBs, structures, relationship between structures thermal properties resulting from graphitization. Hence, herein, we present a novel method...

a simple, rapid and sensitive method has been developed for determination of traces of tellurium (iv) (7.0-120.0 ng/ml) based on it’s catalytic effect on the reduction reaction of lauth’s violet by sulfide ion at ph 4.2. the reaction is monitored spectrophotometrically by measuring the decrease in absorbance of lauth’s viole at 600 nm by the fixed time method. the detection limit is 5.0 ng/ml a...

Hydrogels have emerged as promising supporting materials for wearable or implantable electronic devices, owing to their high biocompatibility. Among the many techniques patterning conductive structures on materials, laser-based graphitization allows simultaneous synthesis and of structures. Here, it has been demonstrated first time, direct hydrogels by graphitization, application this method fa...

Abstract Doping of heteroatom into well-structured mesoporous carbon architecture can significantly augment the capacitive performance. In this work, we report P-doped graphitic hollow spheres (P-GHCS) grown over Fe-KIT-6 through in situ approach using catalytic CVD technique. The obtained P-GHCS possesses a relatively high surface area with uniform structure, good graphitization tunable P-dopi...

the effects of confinement in carbon nanotubes on fischer-tropsch (ft) activity, selectivity and lifetime of carbon nanotubes (cnts) supported iron catalysts are reported. a method was developed to control the position of the catalytic sites on either inner or outer surface of carbon nanotubes. tem analyses revealed that more than 80% of iron oxide particles can be controlled to be positioned a...