Materials Literature
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Abstrak: Proses solidifikasi adalah metode pengolahan limbah B3 yang bertujuan untuk mengurangi kadar toksisitas suatu limbah dengan memperkecil permeabilitas dan meningkatkan kekuatan fisik limbah tersebut. Teknik solidifikasi yang umumnya dilakukan adalah kapsulasi, yaitu teknik penyelimutan limbah dengan bahan peng…
The tempering process aims to get the microstructures that lead to service mechanical properties and to promote the relaxation of the residual stresses generated during quenching. The goal of this work is to predict the effect of tempering time and tempering temperature on hardness by means of neural networks (NNs). F…
The impact properties of the traditional 12 % Cr AISI D2 steel and a family of new generation 8 % Cr cold work tool steels (average chemical composition fulfilling the following ranges: C = 1.00 ± 0.20; Cr = 8.00 ± 0.50; Mo = 1.75 ± 0.75; V = 1.10 ± 0.70; Nb = 0.50 ± 0.45; Si = 0.95 ± 0.10; Mn ≤ 0.50; P≤0.03; S ≤ 0.01…
The orientation of hydrides in fuel cladding determines the anisotropic fracture behavior of Zircaloy and the failure modes of cladding tubes. Approach coupling experiments using the cladding tube deformation test and finite element analysis have successfully led to the quantification of the stress influencing reorien…
Nickel oxide/yttrium stabilized zirconia (NiO/8YSZ) anodes with different amounts of pore formers for anode used for solid oxide fuel cell have been prepared by aqueous tape casting technique. The zeta potential of NiO/8YSZ aqueous suspensions with and without dispersants was characterized. Moreover, the viscosity of…
Single crystal Ge layers were successfully fabricated on the buried oxide layer of a silicon-on-insulator wafer using a combined technique of two-step selective epitaxial growth and Ge condensation. X-ray diffraction measurements revealed that the single crystal Ge layer formed on the buried oxide layer had a tensile…
Abstract The spall strength of cast iron has been investigated by means of planar plate impact experiments conducted in a vacuum. A single stage gas gun was utilized to drive projectiles to velocities between 100 and 300 m/sec, resulting in low to moderate shock loading of the cast iron specimens. Measurement of the s…
For the past 10 years, the frequency of channel-control blade interference has been greater than before because of shadow corrosion-induced bow. Shadow corrosion-induced bow is caused by differential hydrogen concentration on channel sides adjacent to and away from the control blade. The differential hydrogen concentr…
In this study we evaluated two approaches to improving the efficiency of amorphous Si/crystalline Si (a-Si/c-Si) heterojunction solar cells by BF 2 ion implantation. First, emitter layer formation was compared for the cases of B and BF 2 ion implantation when using the same 7° tilt angle. Second, emitter layer formati…
The cover shows examples of 3D wollastonite-based scaffolds from preceramic polymers with reactive fillers.Upper side: sample from fused deposition, after ceramization; Lower side: samples from conventional hot extrusion, after and before ceramization, on the left and on the right, respectively.Further details can be…
Infrared spectroscopy is a technique particularly adapted for material characterisation. Metal Organic Frameworks are highly porous hybrid materials presenting interesting surface properties, which can lead to different practical applications. The application of IR to MOF analysis is extremely valuable to detect the p…
Lung cancer is the leading cause of death among all cancers. Non‐small cell lung cancer (NSCLC) accounts for 80% of lung cancer with a five‐year survival rate of 16%. Although a subset of NSCLC patients benefit from the development of target therapies, cisplatin remains the standard chemotherapeutic drug. Previously,…
To test the hypothesis that ablation of MMP9 induces cardiac stem cell (CSC) differentiation into cardiomyocytes and inhibits autophagy, we created double knock out (DKO: Ins2+/−/MMP9−/−) mice. The levels of CSC, cardiomyomyocytes and autophagy were determined in the heart of C57BL/6J (WT), Ins2+/− (diabetic) and DKO…
Tumor cell lines are frequently used as models to analyze the cellular uptake of nanoparticles. Here we show that carboxy‐ (PS‐COOH) and amino‐functionalized (PS‐NH 2 ) polystyrene nanoparticles of ~100 nm in diameter are internalized by human macrophages, THP‐1 monocytic leukemia cells, and by PMA‐differentiated THP‐…
Peroxiredoxin 6 (Prdx6), a unique non‐seleno mammalian peroxidase, is a bifunctional protein with GSH peroxidase and phospholipase A 2 (PLA 2 ) activities. We have shown that phosphorylation of Prdx6 by mitogen activated protein kinase at Thr177 increases its PLA 2 activity and broadens its pH‐activity spectrum (Bioch…
Carbon nanoparticles have the potential to serve as nanopharmaceutical delivery systems for drugs, genes, and immunogens. They are able to both generate and scavenge reactive oxygen species (ROS) and, like some other nanomaterials, may induce autophagy. Controversy exists regarding their potential for toxicity. System…
Microcystins are produced by blue-green algae bloom extensively. In this research, MC was extracted from the blue algae bloom collected from Taihu Lake. MC-RR was the major component of MCs in the blue algae and it was extracted and purified by multiple extraction, clean-up and semi-preparative HPLC. Bismuth tungstate…
The percentage variation of resistance of PVC-graphite thick film resistors has been studied. Two different grain sizes of graphite, as well as four different compositions of PVC- graphite are adopted in the preparation of thick film resistors. Among the four different compositions of PVC-graphite i.e. 90%:10% to 60%:…
Introduction: Regarding the increasing use of silicon dioxide nanoparticles in medical biotechnology and probable side effects and diseases resulting from its usage, this study was performed to assess the toxic effects of different concentrations of SiO2 nanoparticles on human blood mononuclear leukocytes using the MT…
The high pressure phase transition of transition metal before shock melting is an intriguing issue. We investigate the equation of state and acoustic velocities of bcc Ta, bcc Mo and bcc W under high pressure and high temperature by using density functional theory. The phonon dispersion curves of Ta, Mo and W agree we…