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Online since: February 2012
Authors: Sumandeep Kaur, Vasundhara Singh
The semi logarithmic plots of concentration data gave a straight line as shown in Fig 5.
Since TiO2 is sensitized by Rose Bengal which has number of electron withdrawing groups, the degradation of J-acid occurs via photo-reduction according to Eq. 1 rather than by photo-oxidation leading to the formation of OH radicals which diffuse more rapidly in alkaline medium than in the acidic medium as reported in the literature [8].
Since TiO2 is sensitized by Rose Bengal which has number of electron withdrawing groups, the degradation of J-acid occurs via photo-reduction according to Eq. 1 rather than by photo-oxidation leading to the formation of OH radicals which diffuse more rapidly in alkaline medium than in the acidic medium as reported in the literature [8].
Online since: October 2014
Authors: D.S. van Vuuren, P.J. Skosana, M.D. Heydenrych
The ongoing research at the CSIR is aiming to produce titanium by the continuous reduction of titanium tetrachloride with an alkali metal.
The data for heat transfer coefficient in a bubble column operated with heat transfer oil 32 is not available in the literature.
The data for heat transfer coefficient in a bubble column operated with heat transfer oil 32 is not available in the literature.
Online since: February 2020
Authors: Igor Valerievich Matyushkin, Vladislav Sergeevich Kozhevnikov, Nikolay Vladimirovich Chernyaev
Glass turbidity, i.e. the entropy reduction, is a degradation process which lowers reliability.
This choice can be made on the basis of both physical principles and the results of statistical processing of data obtained during testing of nanodevices.
This choice can be made on the basis of both physical principles and the results of statistical processing of data obtained during testing of nanodevices.
Online since: July 2020
Authors: Aamer Najim Abbas, Halah Al-Nealy, Abdulhadi Al-Saadi, Merza Imran
Table 7 Modulus of rupture of tested specimens
Concrete type
Modulus of rupture (MPa)
Percentage of improvement (%)
0 % SCBA
3.22
Reference specimen
3 % SCBA
3.61
12.11
5 % SCBA
4.01
24.53
7 % SCBA
4.72
46.58
10 % SCBA
4.96
54.04
Slump test
Through the data in Table 8, it shows there is a significant increase of the slump values for different types of concrete.
The amount of reduction is about (13.76) %, (13.24) % and (11.94) % for in comparison to specimen at 28°C.
The amount of reduction is about (13.76) %, (13.24) % and (11.94) % for in comparison to specimen at 28°C.
Online since: December 2023
Authors: Haia Aldosari
According to data from 2018, 9.4 million tonnes of plastic garbage were gathered in Europe for recycling, whereas 359 million tonnes of various plastic materials were manufactured globally during that same year [6,7].
Gomez-Alvarez & et, al., NANOCOMPOSITES OF ZINC OXIDE ON GRAPHENE OXIDE: A RAPID REDUCTION OF GRAPHENE OXIDE, Digest Journal of Nanomaterials and Biostructures.2021,16, 101 – 107
Gomez-Alvarez & et, al., NANOCOMPOSITES OF ZINC OXIDE ON GRAPHENE OXIDE: A RAPID REDUCTION OF GRAPHENE OXIDE, Digest Journal of Nanomaterials and Biostructures.2021,16, 101 – 107
Online since: August 2024
Authors: Mohammad Afzal, Rehbar Khan, Inayat Rasool, Ateeb Ahmad Khan
Introduction
In 3D printing objects are created layer by layer using CAD data, eliminating the need for machining during assembly.
Residual Stresses: Bellini et al. in 2021 revealed that annealing per layer resulted in reduction of stress by approximately 90% towards the lower layer of the component.
Residual Stresses: Bellini et al. in 2021 revealed that annealing per layer resulted in reduction of stress by approximately 90% towards the lower layer of the component.
Online since: June 2009
Authors: Jin Ji Gao, Li Dong He, Wei Min Wang, Hong Xu
The category of engineering cybernetics' theory is as follows:
1) System identification and information processing
To analyze delicately for the measured physical signals using theory and technology of mode
identification; and representing the results using text or diagram so that their meanings can be
understood accurately.
2) Modeling
To abstract the essence of controlled engineering object based on experimental data and using
mathematic methods.
3) Optimum Control
To study the principles and methods to reach the object of control with lowest cost.
4) Self-evolution
To give Self-evolution ability to a system so that the system can change its structure and
parameters, and even can develop new functions based on the changed environmental conditions or
according to the instructed assignment.
5) Fault tolerance system
To introduce to a system a fault tolerance subsystem with the following functions such as
self-diagnosis, error detecting and correcting
Abnormal Conditions and Tendency Engineering Cases Mechanism Study CCoommppaarriissoonn--DDiiaaggnnoossiiss IInntteelllliiggeenntt DDiicciissiioonn Table 2 Functions of the Self-recovery System for Centrifugal Compressor Self-recovery Function Self-recovery Power Self-recovery Mechanism Actuator Limitation Auto-balancing of rotor adaptive regulation Compensating deflection Auto-balancing head (hydraulic or electromagnetic) Efficiency losses Axial displacement regulation Excitation response Counteracting disturbance Pressure difference adjusting on balance piston or axial electromagnetic equipment Liquids get into compressor Swirl break Excitation response Counteracting disturbance Suction unit Efficiency losses Subsynchronous vibration Excitation response Counteracting disturbance Radial force unit like electromagnetic force or squeeze oil film damper False regulation Low-frequency vibration reduction
Abnormal Conditions and Tendency Engineering Cases Mechanism Study CCoommppaarriissoonn--DDiiaaggnnoossiiss IInntteelllliiggeenntt DDiicciissiioonn Table 2 Functions of the Self-recovery System for Centrifugal Compressor Self-recovery Function Self-recovery Power Self-recovery Mechanism Actuator Limitation Auto-balancing of rotor adaptive regulation Compensating deflection Auto-balancing head (hydraulic or electromagnetic) Efficiency losses Axial displacement regulation Excitation response Counteracting disturbance Pressure difference adjusting on balance piston or axial electromagnetic equipment Liquids get into compressor Swirl break Excitation response Counteracting disturbance Suction unit Efficiency losses Subsynchronous vibration Excitation response Counteracting disturbance Radial force unit like electromagnetic force or squeeze oil film damper False regulation Low-frequency vibration reduction
Online since: February 2008
Authors: Yin Xiao, Hui Peng, Xueli Mao, Andrew K. Whittaker, Ross Crawford
One important remaining problem is inadequate interaction between polymer and cells,
leading to in vivo foreign body reactions.
4, 5 Approaches to improve biomaterials include reduction
of non-specific protein adsorption, enhancement of adsorption of specific proteins, and surface
modification and immobilization of cell recognition motives to obtain controlled interactions
between cells and synthetic materials.
6-14
In this paper, an amphiphilic triblock copolymer, poly(methoxy ethylene glycol)-poly(L-lactide)-
poly(L-lysine) (MPEG-b-PLLA-b-PLL) was synthesized via sequential polymerization of PLLA
onto MPEG, followed by ring opening polymerization of PLL onto the functionalized chain end.
Using the XPS data it is possible to propose possible structures of the surface of the films.
Using the XPS data it is possible to propose possible structures of the surface of the films.
Online since: July 2006
Authors: E.F. Sheka
The
procedure correctness has been proven just recently
for the С60F48 adduct, related to the 24
th step of the
fluorine molecule addition, whose structure
perfectly suits the experimental X-Ray data for the
crystal [32].
Being undergone to the reduction near the cathode, the EA group would be pushed to the anode causing the ligand rotation in the manner discussed above.
Being undergone to the reduction near the cathode, the EA group would be pushed to the anode causing the ligand rotation in the manner discussed above.
Online since: April 2009
Authors: Fernando Pedraza-Diaz
One of the major
beneficial effects seem however to be associated with the reduction of the poisoning effect of
sulphur segregating at the scale/metal interface [17,18].
Table 3 gathers the diffusion coefficients of the major alloying elements present in CMSX-4 calculated from the data obtained in pure nickel [26] and in a Waspaloy alloy [30].
Table 3 gathers the diffusion coefficients of the major alloying elements present in CMSX-4 calculated from the data obtained in pure nickel [26] and in a Waspaloy alloy [30].