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51.
Strength of Materials - We apologize to the authors and readers for these technical lapses made by the journal staff. 相似文献
52.
Yuhang Wang Yanbin Sun Shen Su Zhihong Tian Mohan Li Jing Qiu Xianzhi Wang 《计算机、材料和连续体(英文)》2019,59(3):983-993
With the evolution of location-based services (LBS), a new type of LBS has already gain a lot of attention and implementation, we name this kind of LBS as the Device-Dependent LBS (DLBS). In DLBS, the service provider (SP) will not only send the information according to the user’s location, more significant, he also provides a service device which will be carried by the user. DLBS has been successfully practised in some of the large cities around the world, for example, the shared bicycle in Beijing and London. In this paper, we, for the first time, blow the whistle of the new location privacy challenges caused by DLBS, since the service device is enabled to perform the localization without the permission of the user. To conquer these threats, we design a service architecture along with a credit system between DLBS provider and the user. The credit system tie together the DLBS device usability with the curious behaviour upon user’s location privacy, DLBS provider has to sacrifice their revenue in order to gain extra location information of their device. We make the simulation of our proposed scheme and the result convince its effectiveness. 相似文献
53.
Selim Kermasha Nayana N. Barthakur Inteaz Alli Nalin K. Mohan 《Journal of the science of food and agriculture》1987,39(4):317-324
The chemical composition of the Kew cultivar of Indian pineapple (Ananas cosmosus L.) was studied after 65 days (pre-mature), 100 days (early mature), and 150 days (late-mature) from flowering. The fruit was analysed for sugars, amino acids and minerals. Total soluble carbohydrates increased from 6.02 to 9.24%, and protein content decreased from 0.69 to 0.21%, during the fruit-development process. The vitamin C content decreased from 20.4 to 11.1 mg 100 g?1 edible fruit during development. Fructose, glucose and sucrose together constituted approximately 5.0% (pre-mature), 2.4% (early mature), and 1.2% (late-mature) of fresh weight. The contents of iron, boron and zinc increased during development. The major minerals in the mature fruit were potassium (31.33 mg 100 g?1), phosphorus (3.13 mg 100 g?1), calcium (3.92 mg 100 g?1), sodium (2.63 mg 100 g?1), iron (3.22 mg 100 g?1), zinc (0.55 mg 100 g?l), and copper (0.06 mg 100 g?1) of fresh sample. The content of most amino acids decreased during development; only aspartic acid showed a considerable increase in the late-mature fruit. 相似文献
54.
55.
A new DRB3*02 allele (DRB3*0207) was detected in a female Luxembourg Caucasian blood donor by sequence-based typing. The new allele differs from DRB3*0202 by two substitutions in codon 57 resulting in an amino acid change from a charged aspartic acid to a neutral valine. This is the first example of a DRB3 allele pair differing only at codon 57. 相似文献
56.
57.
Subrahmanya Shreepathi Akshay Kumar Guin Shrikant M. Naik Mohan Rao Vattipalli 《Journal of Coatings Technology and Research》2011,8(2):191-200
Electrochemical impedance spectroscopy (EIS) is used to derive an expression for predicting the service life of organic coating
in a C4-type environment (industrial and costal areas with moderate salinity) as defined in ISO 12944 standard for paints
and varnishes—corrosion protection of steel structures by protective paint systems. Three coating systems with a record of
2, 5, and 10 years of durability were selected for the study. The selection was also based on proven composition and dry film
thickness (DFT) of the coatings as per ISO 12944. Electrochemical impedance measurements of the paint-coated panels were carried
out by exposing the coated mild steel panels without scribe in different corrosive environments such as immersion in NaCl
solution, neutral salt spray, etc. Neutral salt spray exposure was found to be the most severe corrosive environment among
all the three coating systems. In most of the cases, EIS gave early indication of coating failure when compared to visual
defects such as blistering and over-film corrosion. 相似文献
58.
The effect of electrochemical lithiation on physicochemical properties of RF-sputtered Sn thin films
C.?S.?NimishaEmail author G.?Venkatesh N.?Munichandraiah G.?Mohan Rao 《Journal of Applied Electrochemistry》2011,41(11):1287-1294
Thin films of Sn were deposited on Pt/Si substrates by sputtering technique and subjected to electrochemical lithiation studies.
Electrochemical lithiation of Sn resulted in the formation of Sn–Li alloys of different compositions. Charging of Sn-coated
Pt/Si electrodes was terminated at different potentials and the electrodes were examined for physicochemical properties. The
scanning electron microscopy and atomic force microscopy images suggested that the Sn films expanded on lithiation. Roughness
of the film increased with an increase in the quantity of Li present in Sn–Li alloy. Electrochemical impedance data suggested
that the kinetics of charging became sluggish with an increase in the quantity of Li in Sn–Li alloy. 相似文献
59.
Mohan K. R. Konduri G. Koteswarareddy D. B. Rohini Kumar B. Venkata Reddy M. Lakshmi Narasu 《应用聚合物科学杂志》2011,120(6):3536-3545
Proxidant additives represent a promising solution to the problem of the environment contamination with polyethylene film litter. Pro‐oxidants accelerate photo‐ and thermo‐oxidation and consequent polymer chain cleavage rendering the product apparently more susceptible to biodegradation. In the present study, fungal strain, Aspergillus oryzae isolated from HDPE film (buried in soil for 3 months) utilized abiotically treated polyethylene (LDPE) as a sole carbon source and degraded it. Treatment with pro‐oxidant, manganese stearate followed by UV irradiation and incubation with A. oryzae resulted in maximum decrease in percentage of elongation and tensile strength by 62 and 51%, respectively, compared with other pro‐oxidant treated LDPE films which showed 45% (titanium stearate), 40% (iron stearate), and 39% (cobalt stearate) decrease in tensile strength. Fourier transform infrared (FTIR) analysis of proxidant treated LDPE films revealed generation of more number of carbonyl and carboxylic groups (1630–1840 cm−1 and 1220–1340 cm−1) compared with UV treated film. When these films were incubated with A. oryzae for 3 months complete degradation of carbonyl and carboxylic groups was achieved. Scanning electron microscopy of untreated and treated LDPE films also revealed that polymer has undergone degradation after abiotic and biotic treatments. This concludes proxidant treatment before UV irradiation accelerated photo‐oxidation of LDPE, caused functional groups to be generated in the polyethylene film and this resulted in biodegradation due to the consumption of carbonyl and carboxylic groups by A. oryzae which was evident by reduction in carbonyl peaks. Among the pro‐oxidants, manganese stearate treatment caused maximum degradation of polyethylene. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2011 相似文献
60.
Pallavi Mukherjee Chaitali Chanda Moumita Bhaumik Madhurima Ghosh Jaweria Sharmin Poulami Datta Srimoyee Banerjee Parthasarathi Barat Ashoke Ranjan Thakur Lalit Mohan Gantayet Indranil Mukherjee Shaon Ray Chaudhuri 《Journal of chemical technology and biotechnology (Oxford, Oxfordshire : 1986)》2018,93(5):1279-1289