properties of water at 15 degrees celsius
Báo cáo " Study on the characteristics and catalytic properties of Pt/SBA-15 in the selective oxidation of D-Glucose " potx
Ngày tải lên :
05/03/2014, 11:21
...
diameter of these materials. Capilary
condensation of SBA -15 begins at P/P
o
=0.6
higher than 1%Pt/SBA -15 (P/P
o
=0.5) and the
wide of hysteresis loop of SBA -15 larger than
PS-1 show that after ... 6nm in the channels of
SBA -15 and at this state, Pt/SBA -15 catalyst
showed the highest activity and selectivity in
the oxidation of glucose. When increasing the
content of Pt loading, most ... nanoparticles
aggregated outside the channels of SBA -15
with size of 10-15nm and catalytic activities of
these materials decreased. pH value also affects
directly on the selectivity of gluconic acid...
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Báo cáo vật lý: "Effect of Treated and Untreated Filler Loading on the Mechanical, Morphological, and Water Absorption Properties of Water Hyacinth FibersLow Density Polyethylene Composites" pdf
Ngày tải lên :
07/08/2014, 14:20
... ke atas sifat-sifat mekanikal, sifat-sifat morfologi, dan penyerapan air telah dikaji.
Dua jenis serat digunakan iaitu serat yang dirawat dan serat yang tidak dirawat, di mana
sebahagian serat ...
and water absorbent properties of the treated and untreated fiber composites are
studied.
2. EXPERIMENTAL
2.1 Materials
Water hyacinth fibers (WHF) were obtained from fresh water ... cellulose obtained
from water hyacinth (E. crassiper) has been used. Water hyacinth is an aquatic
plant that can live and reproduce while freely floating on the surface of fresh
water or while being...
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Tài liệu Bioregulatory Properties of Medications Aiming at Multiple Targets Open New Therapeutic Perspectives doc
Ngày tải lên :
21/02/2014, 17:20
... Society of BioRegulatory Medicine (ASBRM)
is a scientific society formed to support education in bioreg-
ulatory medicine. We believe that a new model of health-
care information and education ... exhibi-
tions as part of a world-wide calendar of events in integrative and bioregulatory medicine
✔ Inclusion on a publically available, international, practitioner finder list
✔ Educational seminars ... of medical associations promoting a broad range of integrative medicine
✔ Discussion forums addressing therapeutic questions and case management
✔ Regular newsletters
✔ Calendar publication of...
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Báo cáo khoa học: Studies on the regulatory properties of the pterin cofactor and dopamine bound at the active site of human phenylalanine hydroxylase pptx
Ngày tải lên :
17/03/2014, 09:20
... occur to generate the active intermediate
for the coupled hydroxylation of the cosubstrates [21,41].
However, the sequence of binding of cofactor and substrate
is still a matter of discussion ... a
concentration of L-Phe at half-maximum saturation
([S]
0.5
)of9 8±7l
M
(Fig. 2A,B). Saturation was reached
at approximately 2 m
M
with a DRU-value of 75 RU/(pmol
subunitặmm
)2
). Simultaneous injection of ... effects of the biopterin cofactor on the rate of
phosphorylation of Ser16, the limited proteolysis by trypsin
and the substrate induced conformational transition (hys-
teresis) related to catalytic...
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gas sensing properties of wo3 doped rutile tio2 thick film at high operating temperature
Ngày tải lên :
19/03/2014, 16:48
... printing, was fabricated successfully. The use of rutile
TiO
2
as the sensing film material enabled the heat treatment to
be performed at high temperature, which facilitated the fabrication
of a sensitive ... sensitivity of the sensor is dominated by the
number of adsorbed oxygen ions at the sensor surface. Because oxi-
Fig. 4. XRD patterns – (1 1 0) peak of undoped TiO
2
, 11 wt.% WO
3
doped TiO
2
and
15 ... sensing properties.
Also, we assumed that the high heat treatment temperature of
the sensor induced an electrical interaction between WO
3
and
TiO
2
, which in turn affected the electrical properties...
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Báo cáo " Synthesis and thermoelectric properties of La(Fe1-xSix)13 compounds (x = 0.12, 0.14 and 0.15) " pptx
Ngày tải lên :
28/03/2014, 13:20
... Journal of Science, Mathematics - Physics 25 (2009) 193-197
194
been demonstrated [6]. The IEM transition is closely related to the large positive curvature of the
density of state (DOS) at the ... compounds have negative thermopower, indicating the n-type
nature of these materials. At room temperature, the thermopower of all the compounds is = - 5.5
àV/K. A growth of the peak is found ... Journal of Science, Mathematics - Physics 25 (2009) 193-197
195
Table 1. The thermoelectric properties of La(Fe
1-x
Si
x
)
13
compounds
and other thermoelectric materials at room temperature...
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hydrothermal properties of materials experimental data on aqueous phase equilibria and solution properties at elevated temperatures and pressures
Ngày tải lên :
01/04/2014, 11:22
... the numerator indicates the number
of units of solute and the denominator shows the number of units (usually one unit) of solution (or of solvent, if it is indic
ated). A designation of the units ... method of weight-loss of crystalls is used for measurements of solid solubility;
Vis.obs. – the method
of visual observations is used for determination of phase equilibria at elevated temperatures ... composition of phases at high temperatures also;
Isopiest – the method of isopiestic measurements is used for determination of the isopiestic molality
(molality at a known activity of water in...
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coats & schauberger - the water wizard - the extraordinary properties of natural water (1997)
Ngày tải lên :
04/06/2014, 12:43
... it matters a great
deal what kind of water we drink or use for cooking. Every laundry knows
that
aqua destillata
(distilled water) and rainwater, for example, have
markedly different properties ... contaminants.
In terms of its mineral, salt and trace-element content, river -water would
generally be far richer than tank -water (rainwater). As for the immature and
mature water discussed at the beginning, ... terms of impeding
natural water circulation and water suffocation. Due to their rectangular
shape and/or right-angled corners, certain stagnant zones are created, con-
ducive to the formation of...
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Báo cáo hóa học: " Structural and physical properties of antibacterial Ag-doped nano-hydroxyapatite synthesized at 100°C" pptx
Ngày tải lên :
20/06/2014, 23:20
... by setting the atomic ratio of Ag/[Ag + Ca] at 20% and [Ca + Ag]/P as 1.67. The X-ray diffraction
studies demonstrate that powders made by co-precipitation at 100°C exhibit the apatite characteristics ... sample. The chang es are attributed to
the substitution of Ag
+
from Ca
2+
into the lattice of
apatite.
Bands’ characteristics of the phosphate and hydrogen
phosphate groups in apatitic environment ... and ther efore optimization
of the Ag concentration in the coating is critical to
* Correspondence: dpredoi@gmail.com
1
National Institute of Materials Physics, 105 bis Atomistilor, P.O. Box...
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Báo cáo hóa học: " Structure and Photoluminescent Properties of ZnO Encapsulated in Mesoporous Silica SBA-15 Fabricated by Two-Solvent Strategy" doc
Ngày tải lên :
22/06/2014, 00:20
... in air at room temperature. Finally, ZnO/SBA -15
nanocomposite was obtained by calcining the dried (paste-
like) product at 500 °C for 4 h at a heating rate of 1 °C/min
in air. The ZnO/SBA -15 nanocomposites ... the
micropores of zeolite [14].
The EDS analysis was carried out on the 15 wt% ZnO/
SBA -15 nanocomposite with the EDS attachment on the
TEM. Figure 6 illustrates the EDS pattern of the 15 wt%
ZnO/SBA -15 ... channels of SBA -15 during
calcination.
Figure 2 shows the low-angle XRD patterns of the
extracted mesoporous silica SBA -15 and the ZnO/SBA -15
nanocomposite. The low-angle XRD pattern of the extrac-
ted...
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