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Online since: November 2013
Authors: Maria Rosaria Guarini, Fabrizio Battisti, Claudia Buccarini
.): i) the distortion of the historical urban context, due to the inclusion of hypertrophic buildings having questionable architectural and functional quality; ii) loss of architectural heritage, businesses, jobs; iii) reduction of the amount of services supplied to citizens and of the close relationship with local traders (sometimes farmers), due to the progressive reduction/closure of stalls (about 30% in the Milvian Bridge market) [5] and to the operators’ turnover; iii) local collective initiatives disadvantaged with respect to opportunities offered to business interests of people alien to the local context, who can thus exploit the favorable returns of privileged locations with consequent decreases in the business goodwill value (from about € 50,000 before the intervention – 2004 - to € 15,000/25,000 after the intervention – 2009 - at the Trionfale market) [5] and lack of ‘attractiveness’ in the rental market of commercial premises on the floors above the market area.
Synthetic technical data concerning the market (from MR’s pre-feasibility study, the three project ideas, status and new proposal) is shown in table 1.
Table 1 - Synthetic technical data concerning the market (MR’s pre-feasibility study, ideas/project, status and new proposal) The pre-feasibility study prepared by MR for the Flaminio II market [8] estimates the costs of the works as € 5,926,000, with a total capital cost (economic framework) of € 7,051,940 in 24 months.
Online since: August 2005
Authors: Jun Wang, S. Xu
An examination of the experimental data for the 64 cuts has shown that the total depth of cut increases with the number of passes, as might be expected, so that multipass cutting is an effective means to increase the AWJ cutting capability and application domain.
The experimental data show that nozzle oscillation has significantly increased the depth of cut by an average of 45.43% as compared to that in normal cutting under the corresponding cutting conditions for single-, double- and triple-pass cutting.
However, the rate of kerf taper reduction decreases as the number of pass increases.
For all the tests in this study, oscillation cutting reduced the average kerf taper from 5.43 o to 3.43 o , representing a 36.8% reduction.
Online since: June 2024
Authors: Abdul Raheem Abid Ali, Ahlam Hamid Jasim, Hasan Sh. Majdi, Alaa Mohammed Hussein Wais
Objectives of the current research are studying experimentally, the development of biocompatible coating on the surface of 316 Austenitic Stainless steel alloy using ceramic nano-particles TiO2 by EPD technique, investigate the effect of suspension composition and EPD processing factors (time deposition and voltage deposition) to reach the optimal coating conditions of samples and the reduction of contact angle wettability and dissolution behavior of metallic implants in (NaCl 0.9% and Ringer's solutions). 2.
SEM of coatings surface (a) austenitic stainless steel 316L, and layer coating TiO2 (b) time deposition 2 min,(c) time deposition 4 min and (d) time deposition 6 min. 3.2 Surface Roughness Data regarding the roughness of the substrate and plated samples has been illustrated in Table (4).
Experimental data micro-hardness of the coated and uncoated samples Specimen Vickers Hardness (HV) Substrate 460 (TiO2) a plated(20V,4 min) 1235 (TiO2) a plated(20V,2 min) 1483 (TiO2) a plated(20V,6 min) 1380 3.5 Wettability The surface of uncoated austenitic stainless steel 316L surface sample has a higher aqueous contact angle of 75.2° and indicates a less hydrophilic surface compared to the coated samples that presents a contact angle of test values as illustrated in Table (6).
The results of previous research indicate that the high surface wettability and surface roughness at the micron scale were for the synergistic effect of reduction on cell adhesion and growth.
Online since: August 2024
Authors: Takashi Tsuji, Yong Liu, Xin Peng, Yuichi Onozawa, Naoto Fujishima, Johnny Kin On Sin, Lin Hua Huang
Based on above facts, an Al2O3/LaAlO3/SiO2 gate stack on planar SiC MOSFETs has been demonstrated to achieve a 40% reduction in channel resistance, negligible transfer hysteresis, better threshold voltage stability, and longer short-circuit withstand time, compared to the conventional SiO2 gate devices [5, 6].
The cause is most likely related to the O2 annealing for the Al2O3/LaAlO3/SiO2 device, which can deteriorate the passivated deposited-SiO2/SiC interface and lead to a reduction in the channel mobility.
Figures 8 (a) and (b) show experimental data of the mobility on (1120) channel plane for the Al2O3/LaAlO3/SiO2 trench gate MOSFET at 300K and 450K, respectively.
For all channel planes, the calculated total mobility is well agreed with the experimental data of the mobility.
Online since: March 2021
Authors: Nazikussabah Zaharudin, Nashrin Iszhan, Farah Nurshahida Mohd Subakir
Recognition of T. gigas as a healthy seafood will increase the demand for the species in the seafood market, resulting in additional income for the fishermen and also reduction of resource loss by avoiding/reducing discard of the species.
Each sample was kept refrigerated (4°C) immediately prior to size reduction and homogenization.
Unfortunately, there are no data recorded for the proximate value of horseshoe crab to be compared with.
Compared to this data, the muscle of horseshoe crab has 14.62 g/100 g, which is average while roe has 38.24 g/100 g, which is the highest.
Online since: December 2023
Authors: Nicolae Șerban, Vasile Danuț Cojocaru, Mariana Lucia Angelescu, Bogdan Iulian Vaduva, Emil Panainte, Dana Mariana Șerban, Elisabeta Mirela Cojocaru
The indexed phases / compounds for these XRD data are also indicated, namely: martensite α-Fe, residual austenite γ-Fe, and Ni / Cr carbides (Ni,Cr)xCy.
Mechanical characteristics Sample Vickers microhardness (HV0.2) Tensile properties Zone A [HRC] Zone B [HRC] Zone C [HRC] σUTS [MPa] σ0.2 [MPa] εf [%] Initial / case-hardened AMS 6265 62.2 61.6 46.8 1246 1092 5.05 SMT-SP processed AMS 6265 (d1 = 0.3 mm, p2 = 5 bar, t4 = 35 min) 65.5 61.5 45.2 1319 1114 4.94 Analyzing the data in Table 2, one can observe that the Vickers microhardness values obtained for zones A and B are very similar to the measurements of surface hardness (62.18 HRC, average value), indicating the impact of case-hardening treatment.
However, a slight enhancement of ultimate tensile strength and yield strength, along with a slight reduction in elongation to fracture, can be observed in the material subjected to the SP treatment.
While some slight enhancements in ultimate tensile strength and yield strength, coupled with a small reduction in elongation to fracture, are observed in the tensile tests as the values for the treatment parameters are increasing, it can be concluded that SMT-SP processing exhibits no significant impact on tensile mechanical properties of the material.
Online since: January 2012
Authors: Glenn D. Hibbard, Uta Klement, Mehrdad Shahabi-Navid
Basic noise reduction was applied for all maps and grain identification was performed (at least 2 connected pixels of the same kind were required to define a grain).
To improve statistics, the inverse pole figure in Fig. 3 shows the superimposed data of 4 different measurements.
Fig. 3: Inverse pole figure of 4 measurements (superimposed data) obtained for Ni–18 wt.% Fe after annealing for 30 min at 300°C (y-direction is parallel to growth direction).
After noise reduction, about 30% of the investigated surface area is still un-indexed which is mainly due to overlap of patterns at grain boundaries.
Online since: May 2023
Authors: Anders Hallén, Mietek Bakowski, Adolf Schöner, Sergey Reshanov, Wlodek Kaplan, Zimo Yuan
In this paper, static and dynamic simulations of 10 kV 4H-SiC diodes using Sentaurus TCAD are combined with calculation of lifetime profiles estimated by SRIM [5] and DLTS data from the literature.
This value is tuned to produce experimental values of forward voltages comparable to the measured data [6, 8].
The plasma level and speed of plasma reduction are both related to proton-induced defects location.
Håkansson, “Simulation of Proton-Induced Local Lifetime Reduction in 10 kV Diodes”, IEEE Trans.
Online since: August 2022
Authors: Mohsen A. Hassan, Ahmed H. Hassanin, Ignatius Ebo-Quansah, Tadaharu Adachi
Complex constitutive model which captures material behaviour such as plasticity, fracture mechanism through stress-strain data obtained at both quasi-static and large strain rates were implemented to adequately relate simulation to the physical problem.
In this work, data for the Johnson-Cook plasticity and failure models which express the equivalent flow stress as function strain rate, strain hardening and temperature for both target steel and projectile were taken from references [1,20].
There was a reduction in initial velocity of projectile to a residual velocity value of 460 m/s.
Variation in velocity reduction for both S2-W1-S2 and S2-W2-S2 models (refer to Fig. 5 for notation) were very small.
Online since: August 2013
Authors: Mohsin Mohd Sies, Mazlan Abdul Wahid, Mohammad Parsazadeh, Farshid Fathinia, Amirhossein Heshmati
Data Reduction.
This model was presented better agreement in measured data at the current geometry [8].
However this priority on heat transfer enhancement was changed to the trapezoidal obstacles with increasing height in flow direction (case 4) at upper wall due to reduction on low heat transfer areas which were produced at the corners of the obstacles.
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