• Asian-Australasian Journal of Animal Sciences
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• v.28 no.1
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• pp.79-85
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• 2015

One-day-old Cherry valley meat-strain ducks were used to investigate the effect of supplemental dried oregano powder (DOP) in feed on the productivity, antioxidant enzyme activity, and breast meat quality. One hundred sixty five ducks were assigned to 5 dietary treatments for 42 days. The dietary treatment groups were control group (CON; no antibiotic, no DOP), antibiotic group (ANT; CON+0.1% Patrol), 0.1% DOP (CON+0.1% DOP), 0.5% DOP (CON+0.5% DOP), and 1.0% DOP (CON+1.0% DOP). Upon feeding, 1,1-diphenyl-2-picryl-hydrazyl (DPPH) radical scavenging activity of oregano extracts was higher than that of tocopherol, although it was less than that of ascorbic acid. As a result of in vivo study, DOP in the diet showed no effects on final body weight, feed intake, or feed conversion ratio. However, dietary 0.5% and 1% DOP supplementation caused a significant increase in the serum enzyme activity of superoxide dismutase (SOD) compared with CON and ANT, while glutathione peroxidase (GPx) in tissue was increased as compared to ANT (p<0.05). Cooking loss from ducks fed with DOP decreased compared with the control ducks. Thiobarbituric acid reactive substance (TBARS) values of duck breast meat at 5 d post slaughter was found to be significantly reduced in ducks whose diets were supplemented with 0.5% and 1% DOP (p<0.05). These results suggest that diets containing 0.5% and 1% DOP may beneficially affect antioxidant enzyme activity of GPx and SOD, improve meat cooking loss, and reduce TBARS values in breast meat at 5 d of storage in ducks.

• Journal of Institute of Control, Robotics and Systems
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• v.6 no.10
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• pp.923-927
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• 2000

This paper presents a relationship between DOP for TOA and TDOA is defined using the error covariance matrix of TDOA. It is analytically shown that the error ellipsoid of TOA is as same as that of TDOA in magnitude and in orientation, which means that DOP for TOA is identical to the DOP for TDOA. By computer simulation, the positioning performance of two methods is compared, and we verify our assertion.

• Journal of Satellite, Information and Communications
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• v.8 no.1
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• pp.40-44
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• 2013

In this paper, we describe on the position error of GBAS. In reality, there are many sources which make errors into the calculation of receiver position. It is well known that the DOP of GBAS is an important position error source and is dependent on the numbers and positions of the transmitters. Here, we develop an algorism to calculate the DOP of the GNSS with 2-line transmitters into Korean area. The result is useful to predict the DOP of the positions where transmitters and receivers are located.

• Journal of KIISE:Computer Systems and Theory
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• v.36 no.2
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• pp.111-123
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• 2009

We present an efficient algorithm for computing the Hausdorff distance between two 2D convex polygons. Two convex polygons are bounded by k-DOPs and the regions of interest are traced using the orientational and hierarchical properties of k-DOP. The algorithm runs in a logarithmic time in the average case, and the worst case time complexity is linear.

• Journal of Electrical Engineering and Technology
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• v.11 no.3
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• pp.746-750
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• 2016

Dilution of Precision (DOP), as a measure of positioning accuracy, is an essential factor. Therefore, the DOP relationship between systems is very important. In this paper, the DOP relationship between TDOA and TOA in systems lacking clock bias is derived analytically and verified experimentally. Also, using those of earlier studies, the DOP relationship in each of defined systems is derived analytically.

• Journal of Institute of Control, Robotics and Systems
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• v.17 no.1
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• pp.68-71
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• 2011

A relationship between reader arrangement and DOP is derived from the geometry matrix of the TDOA-based position tracking system. It is shown that the minimum value of the DOP is affected by the number of readers, arrangement of readers and position of the tag. The relationship is verified through computer simulations for two cases of reader arrangement.

• Elastomers and Composites
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• v.34 no.5
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• pp.391-398
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• 1999

Di-2-ethyl hexyl phthalate (DOP) and di-2-ethyl hexyl adiphate (DOA) were mixed with poly(vlnvl chlorides) [PVC] which have different degrees of polymerization (DP). Tensile strength, elongation, density, abrasion resistance, and hardness of these compounds were measured, High molecular weight PVC(DP 2500) was superior to that of DP 1300 for tensile strength, Hardness. But elongation and abrasion resistance of P1300 systems were better than those of P2500 systems. The densities of both systems were almost same. On the other hand, DOP Plasticized PVC was superior to DOA plasticized one for tensile strength, elongation, hardness. In cases of density, abrasion resistance, and flexual resistance, DOA systems were better than those of DOP systems.

• Journal of the korean society of oceanography
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• v.35 no.2
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• pp.89-97
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• 2000

The pyritization of heavy metals in Lake Shihwa sediments was investigated to determine sedimentary Pyrite-heavy metal associations influenced by various metal fractions, organic carbon, and total reduced sulfur. Parameters indicating the degree of heavy metal pyritization (DTMP) and degree of pyritization (DOP) were used to study the incorporation of heavy metals into the pyrite phase. The DOP levels ranged from 3.28-39.45%, showing wide differences among sampling stations. The levels were greater near the water gate and the center of the lake than near the industrial complex. The spatial pattern of the DOP levels was similar to the S/C ratio and also to the salinity. Based on the measured relationships between DOP and DTMP, heavy metals can be divided into three groups. In the first group was As, which showed a high affinity for pyrite. In the second group were Ni, Co and Cu, which showed a gradual increase in DTMP with increasing DOP. In the final group were Pb, Zn, Mn and Cr, which all showed a low DTMP with constant values with respect to DOP.

• Fisheries and Aquatic Sciences
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• v.9 no.1
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• pp.30-37
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• 2006

We performed experiments on the uptake and excretion of dissolved organic phosphorus (DOP) using two toxic dinoflagellates, Alexandrium tamarense Lebour (Balech) and Gymnodinium catenatum Graham, isolated from Hiroshima Bay, Japan. ATP (adenosine triphosphate), UMP (uridine-5-monophosphate), G-6-P (glucose-6-phosphate) and Glycero-P (glycerophosphate) were used as DOP sources in preliminary uptake experiments. ATP was selected as the DOP species for the short-tenn uptake experiment because preliminary experiments showed it to be the DOP source used by both species. Although the $K_s$ values of A. tamarense and G. catenatum (5.63 and $7.61{\mu}M$, respectively) obtained from the short-term experiments for ATP were only slightly higher than those reported for dissolved inorganic phosphorus (DIP), the ${\rho}_{max}$ values (5.04 pmol/cell/h and 13.4 pmol/cell/h, respectively) were much higher. The DOP excretion rate in batch-culture experiments was estimated at 0.084 pmol/cell/h for A. tamarense and 0.012 pmol/cell/h for G. catenatum, accounting for about 30% and 25%, respectively, of the assimilated phosphorus. Our results suggest that the DIP-depleted conditions of Hiroshima Bay favor these two species by supporting their ability to use DOP.

• Applied Chemistry for Engineering
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• v.25 no.6
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• pp.602-606
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• 2014

In this study, we observed changes in the physical properties of norbornene dialkyl ester applied to a PVC. The PVC specimens were prepared by blending PVC, norbornene dialkyl ester and stabilizers. Then, the hardness, tensile strength, elongation, tearing strength, transmittancy, haze and yellowness index of these specimens were measured, and were compared with DOP. The hardness of compounds except dicyclohexyl-5-norbornene-2,3-dicarboxylate (DCHN) were an equal to or higher than that of DOP. The tearing strength and tensile characteristic of DCHN could not be analyzed due to its high hardness. Tensile properties such as the tensile strength and elongation were improved for six compounds except diisononyl-5-norbornene-2,3-dicarboxylate (DINN). All compounds measured showed better tearing strength and transmittancy than those of DOP. Also all norbornene derivatives except DDN showed good haze indices. The yellowness index of DON and DPN showed similar values as DOP.