Structural and electrical characterization of Copper modified Calcium Titanate Ceramic Mehboob Nagarabawadi1, Vinayak S. Uchagaonkar2,Sohail Bagwan3 1Dept. of Physics, Poona College of Arts, Science and Comm., Camp, Pune - 411 001, India. 2Army Institute of Technology/ASK, Pune - 411 015, India. 3Dept. of Physics, Abeda Inamdar College for Girls, Camp, Pune-411001.India.
Abstract: Special physical properties of ferroelectric ceramic prepared by Double sintered Solid State Reaction method studied for a series (Ca100-x Cux TiO3) of Copper doped Calcium Titanate. such as XRD, dielectric hysteresis
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Table No.2 : Curie temperature of pure and Copper doped Calcium Titanate. Curie Temperature O C 500 485 480 440 418 403 CuO mole % 0.00 0.5 1.0 2.0 4.0 8.0
The pyroelectric properties generally depend on the poling conditions. Therefore Poling of
the sintered pellets was carried out at room temperature for 10 minutes by a constant d c
electric field of 10 kv/cm. To eliminate the current due space charge, the test sample
electrodes were short circuited for 30 minutes before pyroelectric measurements. These
poled sample were slowly heated in a furnace and pyroelectric current were measured
with a digital d c micro voltmeter connected to piccoammeter adaptor at various temperature
and time was also noted for calculating rate of heating. The pyroelectric coefficient were
calculated by direct method suggested by Byer and Roundy(24). The pyroelectric current
produced in samples as a consequence of the change in polarization of a ceramic when
C4564 Description: IC50: 3-AP is a ribonucleotide reductase inhibitor and iron chelator with antitumor activity. Ribonucleotide reductase, the rate-limiting enzyme for de novo DNA synthesis, is an excellent target for chemotherapy. Its increased activity in cancer cells is associated with malignant transformation and proliferation.
For this lab, zeolite and magnetized zeolite were synthesized and compared with charcoal to find out with would be the most effective in the sequestering of Procion Red dye. Finding the concentration and absorbance of each zeolite, magnetized zeolite, and charcoal, along with a calibration curve, the best adsorbent is determined. Charcoal was the overall best sequestration of the Procion Red dye, since the adsorbent was highest compared to the others. Introduction Pollution has increased in the environment over the years, so the purpose of this experiment is to find the best adsorbent of chemicals to reduce the pollution.
4.1.6 Flip ops as Counters As can be seen from Figure 4.7 and Figure 4.8, a T-FF can be implemented using a D- FF feeding back the negate output /Q to the input D. The input clock to be divided is then provided at the CLK input. Cascading n T-FF stages as shown in Figure 4.8, it is 26 possible to divide the input frequency by a factor of 2^n . Based on current requirement Figure 4.7: FlipFlop of IC, size and availability and operating temperature, the rst combination which is the cascade of divide-by-4, divide-by-10 and divide-by-10 is chosen. The ip op as divide by 4, 10, 40 etc have been simulated with ADS.
Results The lab experiment was done in two parts, one with the NAND, NOR, XOR and Hex Inverters and the other with a 7483 full adder gate, both will verify the truth table when two input bits and a carry are added together. The circuits were built by examining the 1 bits through a K-Map to create a Boolean expression for the sum and carry. The Boolean expression for the sum was A⊕B⊕C and the carry as AB+BC_in+AC_in. From these two expressions, we notice that we must use two exclusive-ORs gates in the sum inputs for A, B, and C. For the sum, we have to use NOR and NAND (the only available gates from the lab manual).
For most sequences at position 4 and 5 we observe only the nucleotides G and T, respectively. There may be rare cases where other nucleotides may also be found. To consider such observations, we need to do a process called additive smoothing or Laplace smoothing to smooth the categorical data. [9] In this case, we add 4 sequences: AAAAAAAAA, CCCCCCCCC, GGGGGGGG, TTTTTTTTT.
I need to find the area of rectangle ABCD. I know that ABCD is a rectangle with diagonals intersecting at point E. Segment DE equals 4x-5, segment BC equals 2x+6, and segment AC equals 6x. I predict that To find the area of rectangle ABCD I need to find out the base and height of the rectangle. The first step is to find what x equals. Since I know the intersecting line segments AC and DB are congruent that means when I times the equation 4x-5 for segment DE by two it will equal the equation 6x for segment AC.
Experiment 7 In this experiment we configured several DC circuits consisting of an emf and a network of resistors. The circuits were composed of a power supply, two DMMs, a circuit board, an SPST switch, and an assortment of known resistors along with one unknown resistor. We measured the current and voltage of the entire circuit as well as the potential drops across each resistor to determine the parameters of the circuit including the resistance, voltage, and current for each component.
Using the data provided in each one of these tests it can be assumed that one has done the steps to be able to determine the magnitude and orientation of the charges of the tape in each test, thus, allowing them to apply the same principle to any object they so desired. Their results would line up with the following; that if the two pieces of tape are torn from the same 40 centimeter strip then the tops of both pieces of tape would be positive and the bottoms of both pieces of tape would be negative and that if they would double the tape the attraction or repulsion in general would lower due to the increased density. Their data would also show that two pieces of tape ripped from each other would result in one piece being entirely positive and the other being entirely negative, they would also be able to state that the orientation of how the tape is paired up doesn’t matter.
1. The test subjects will prepare for sleep by acquiring everything needed for the subjects’ sleep preferences. 2. The test subjects will all set alarms on their smartphones for approximately 6, 8, and 10 hours after the subjects’ enter the resting period (Subjects may wake during the resting period for the bathroom, but they must not stay awake for more than ten minutes at a time to prevent as much deviation as possible.). 3.
1. What area/aspect of this setting is the most challenging? 2. In the setting, you work in, is there a certain population of patients you see more? How does this affect you?
1. Identify the range of senses involved in communication • Sight (visual communication), Touch (tactile communication), Taste, Hearing (auditory communication), Smell (olfactory communication) 2. Identify the limited range of wavelengths and named parts of the electromagnetic spectrum detected by humans and compare this range with those of THREE other named vertebrates and TWO named invertebrates. Figure 1: the electromagnetic spectrum source: www.ces.fau.edu Vertebrates Human Japanese Dace Fish Rattlesnake Zebra Finch Part of electromagnetic spectrum detected ROYGBV (visible light) detected by light sensitive cells in the eye called rods and cones.
19.386526 -67.45 -44.1 20.53525 -68.39 -44.1 21.75204 -68.56 -44.1 23.04093 -67.97 -44.1 24.406191 -67.25 -44.1 25.852348 -66.75 -44.1 27.384196 -66.66 -44.1 29.006812 -66.79 -44.1 11.54782 -67.25 -44.1 12.232071 -66.3 -44.1 12.956867 -65.38 -44.1 13.72461 -64.56 -44.1 14.537844 -64.01 Adrian Bersiks_bersik_Acoustic Analysis_Excel.xlsx-44.1 15.399265 -63.86 -44.1 From the figure above there are no interpolation points above the reference line, which means the frequencies were bounded nicely under the maximum amplitude, and the greatest amplitude was captured on the sampling interval exactly, with a closer distribution in amplitudes. Again the 130Hz drop is consistent. Looking at the Excel spreadsheet, the resposnse almost mimics the
Typical sample dimensions 9.51 × 4.83 mm2in surface area and1.58 mm in thickness were coated with conductive silver paint formetallic contacts. The dielectric constant of the sample was mea-sured for the applied frequency that varies from 100 Hz to 1 MHz atdifferent temperatures (40◦C, 60◦C, 80◦C). The observations weremade while cooling the sample. The dielectric constant εrwas cal-culated using the relation, εr =
Purpose/Introduction The process of recrystallization is an important method of purifying a solid organic substance using a hot solution as a solvent. This method will allow the separation of impurities. We will analyze Benzoic Acid as it is dissolved and recrystallized in water and in a solvent of Methanol and water. Reaction/Summary
Practical I: Acid-base equilibrium & pH of solutions Aims/Objectives: 1. To determine the pH range where the indicator changes colour. 2. To identify the suitable indicators for different titrations. 3.