...
Trace Elements in Teeth: Implication for Caries 2
teeth has been suggested as being indicative of Pb toxicity.
5,9
Here, we have
investigated the importance of the location of trace elements ... carious teeth than in those with healthy teeth.
Keywords: ICP-MS, teeth, trace elements, caries, teeth pulps
1. INTRODUCTION
Biomonitoring of trace...
... available in the literature.
10,11
It is reported
that the ratio of the silica source to the surfactant ratio and the pH of the synthesis
gel can greatly influence the characteristics of the resulting ... amounts of C1
–
ions. Therefore, for the partial dehydration
of PEO units, the volume of the hydrophilic part of the micelle decreases....
... structure of RO16 dye.
Journal of Physical Science, Vol. 21(2), 29–40, 2010 29
Decolourisation of Reactive Orange 16 by Activated Carbon and
Copper Oxide Catalysts Supported by Activated ... Decolourisation of Reactive Orange 16 (RO16) dye by HNO
3
-modified
activated carbons (ACs) and a copper oxide catalyst supported by mo...
... Pemotong
(Performance of Carbide Cutting Tool when Machining Cast Iron
FC 250 in Dry Condition and Using Cutting Fluid)
Jaharah A. Ghani
*
, Mohd Noor Azmi Mohd Rodzi, Noordin Ibrahim
dan Che ... above. In dry machining, wear mechanisms were caused by
adhesion and micro-attrition at low combination of machining parameters. While at high
comb...
...
3.5 Electrical Conductivity
The polymer backbone in the PANI-ESP conducting polymers consists
of a π-conjugated chain. The overlap of π-electrons is called conjugation because
it leads ... the conductive
polymer based on PANI was concluded to possess a FCC structure. The powders
exhibited peaks at 2 angles, around 200 and 450, which indicates that the
conductive polymer co...
... adsorption bands corresponding
to the saponite structure are identified in the region of 1012.69 cm
–1
and 661 cm
–1
as the vibrations of the tetrahedral and octahedral sheet. The band at ... ZrO
2
/Al
2
O
3
-pillared Saponite and Its
Spectroscopic Investigation on NO
X
Adsorption
Is Fatimah
1
*, Karna Wijaya
2
and Narsito
2
1
Chemistry Department, Islamic...
... damage
Evaluation of In Vitro Antioxidant Activity 90
antioxidant activity of 5H-dibenz[b,f]azepine and its derivatives on h
oxidation and lipid peroxidation acti
uman LDL
vity in the liposome ... lipid p
activity of the 5H-dibenz[b,f]azepine and its derivatives in the liposo
induced by FeCl
3
plus AA, is represented in Figure 2. Compound
showed pro...
... of Physical Science, Vol. 17(2), 151–159, 2006
151
EFFECTS OF Si, Al
2
O
3
AND SiC SUBSTRATES
ON THE CHARACTERISTICS OF DBRS
STRUCTURE FOR GaN BASED LASER
N.M. Ahmed*, M.R. Hashim and ... number of
layers. However, MOVPE process parameters for the GaN on alternative
substrates need further optimization to reach the quality of GaN laye...
...
The MAC (2.5% (w/w) Se /activated carbon) was prepared and can be
applied to improve the quality of used coconut oil. Treatment of used coconut oil
with MAC was effective in regenerating the ... AC.
The pore size determination showed a distribution of 63.88% mesopore and 36.12%
micropore. Several key quality indicators of the oil were determined for t...
... hardness of aluminium composites decreases. Also, it is noted
that the hardness of aluminium matrix composites reinforced with silica sand is
higher than those reinforced with commercial silica. ... the higher sintered density accomplished in
aluminium matrix composite reinforced with silica sand.
Fabrication of Low Cost of Aluminium Matrix Co...
... All the observations are interpreted in terms of grain-grain interaction and
grain -field interaction that exist in the system. The field strength is found to enhance the
structural formation in ...
depending on the evolution of the aggregates with increasing strength of the
external magnetic field.
26, 27
Under the effect of an external magnetic f...
... Fe-Cr-Al
2
O
3
have been fabricated by powder
metallurgy route. The varying weight percentage of alumina particles studied
have an effect on the final physical properties of the composites namely ... and characterizing composites of iron-
chromium alloy reinforced with 5–25 wt. % of alumina particles fabricated using powder
metallurgy method. The diffraction...
... Suharty
1*
, Basuki Wirjosentono
2
, Maulidan Firdaus
1
, Desi S. Handayani
1
,
Jamilatus Sholikhah
1
and Yuniarni A. Maharani
1
1
Department of Chemistry, Faculty of Mathematics and Natural ... condition. Increasing of BP concentration up to
20% in masterbatches mixture can extent the interaction among BP, AA and PP.
These mean that the above mixture can arise the radical reac...
... due the formation of
covalent linkages and hydrogen bonds between the maleic anhydride and the
hydroxyl group of the fibre.
8–14
This article reports the result of an investigation on the effect ... Polypropylene/Ethylene Propylene Diene
Terpolymer/Kaolin Composites: The Effect of Maleic Anhydride-
Grafted-Polypropylene
H. Salmah
*
, C.M. Ruzaid...
... 25
Filler loading (phr)
Elongation at break (%)
Untreated Fibers
Treated Fibers
Figure 3: Effect of filler loading on the elongation at break of the LDPE/WHF
composites with untreated and treated ...
The elongation break is further reduced to less than 50% as the filler
concentration increased to 15 phr and 25 phr. When the percentage of filler
l...