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Online since: September 2023
Authors: Shabnam Qureshi, Purvee Bhardwaj, Ghizal F. Ansari
Ansari2,c*
1Department of physics, Rabindranath Tagore University, Raisen, India,464993
2Department of physics, Madhyanchal Professional University, Bhopal, India,462044
aqshabnam256@gmail.com, bpurveebhardwaj@gmail.com, cansarigf@rediffmail.com*
*corresponding author
Keywords: Melting and quenching method, Oxygen packing density (OPD); Photoluminescence.
Using distilled water as the dipping medium and the Archimedes principle, the density of the specimens was measured at ambient temperature.
Glass specimens were weighed in air (Wa) and water (Ww), with water weighing one gram per cubic centimeter.
Each glass sample's density was measured using the relation below: ρg = Wa/{Wa –Ww} (1) Where (Wa) and (Ww) stand for the weights of a specimen of glass in distilled water and air, correspondingly.
Using distilled water as the dipping medium and the Archimedes principle, the density of the specimens was measured at ambient temperature.
Glass specimens were weighed in air (Wa) and water (Ww), with water weighing one gram per cubic centimeter.
Each glass sample's density was measured using the relation below: ρg = Wa/{Wa –Ww} (1) Where (Wa) and (Ww) stand for the weights of a specimen of glass in distilled water and air, correspondingly.
Online since: October 2011
Authors: Xian Fang Wu, Hou Lin Liu, Hong Hui Li, Ming Gao Tan
Fig.3 3D model of volute and section Fig.4 Pump assembly sketch
Afetr the water passes the impeller and fixed diffuser, it still has certain asymmetry.
So, in order to reduce the effects of water strike on volute further, the volute section can not be symmetrical as usual.
The basic circle diameter D3 is 706mm, the inlet width b3 is 226mm, the outlet diameter D4 is 553mm and the location angle of cut water is 39°.
Inner Flow Simulation As shown in fig.4, the 3D water model of impeller, fixed diffuser, and volute is built and assembled by professional software Pro/E.
So, in order to reduce the effects of water strike on volute further, the volute section can not be symmetrical as usual.
The basic circle diameter D3 is 706mm, the inlet width b3 is 226mm, the outlet diameter D4 is 553mm and the location angle of cut water is 39°.
Inner Flow Simulation As shown in fig.4, the 3D water model of impeller, fixed diffuser, and volute is built and assembled by professional software Pro/E.
Online since: January 2013
Authors: Guang Yuan Zhao, Wei Zong, Yang Chang
The fresh jujubes were carefully washed with tap water, removed cores and cut into pieces, then kept into boiling water for 4 minutes and juiced with a juice extractor, the ratio of jujube to water 1:3(w/v).
After milling the pH of the juice was adjusted to 4.6, the enzyme were added to jujube juice for enzymatic hydrolysis at 50℃ which was controlled using a digital constant temperature water bath and Stirred by the speed electric mixer magnetic stirrer, and then the juice was heated to inactivate enzymes at 100℃ for 10min.
Published by Blackie Academic and Professional, London.
After milling the pH of the juice was adjusted to 4.6, the enzyme were added to jujube juice for enzymatic hydrolysis at 50℃ which was controlled using a digital constant temperature water bath and Stirred by the speed electric mixer magnetic stirrer, and then the juice was heated to inactivate enzymes at 100℃ for 10min.
Published by Blackie Academic and Professional, London.
Online since: December 2012
Authors: Jing Yi Chang, Yean Der Kuan
The thermoelectric design recovered absorbed heat from indoor spaces and then transmitted the heat to the cooling water, in order to increase the cooling water temperature for waste heat recovery air conditioning and hot water.
Zhai et al. [9-10] applied a multi-functional solar energy system to green buildings, which could be used for heating, cooling, natural ventilation and hot water supply.
The Airpak CFD software is professional analysis software for engineers, architects and designers.
Zhai et al. [9-10] applied a multi-functional solar energy system to green buildings, which could be used for heating, cooling, natural ventilation and hot water supply.
The Airpak CFD software is professional analysis software for engineers, architects and designers.
Online since: May 2024
Authors: Boudjellel Moulai Ali, Abdellah Kaou, Laouni Gaidi, Djilali Bouha, El Bahri Ould Chikh, Hadj Miloud Meddah, Athmane Khalifa Bouha
Various polyethylene (PE) pipes are widely used in Algeria to distribute potable water and natural gas in urban areas and water agricultural crops in the countryside.
Currently in Algeria, various polyethylene pipes are joined using traditional methods such as butt welding and electro-fusion welding, along with small and medium-diameter pipe connections used in agriculture and water distribution.
This research aims to maintain an acceptable elongation (relative elongation at break) compared to the base material and to study the effects of quenching by water on structural development and relaxation in the weld-affected zone.
This research will help industry professionals develop pipe collection devices and produce high-quality HDPE welds that reduce the cost of welding operations and shift toward more sustainable manufacturing processes.
Currently in Algeria, various polyethylene pipes are joined using traditional methods such as butt welding and electro-fusion welding, along with small and medium-diameter pipe connections used in agriculture and water distribution.
This research aims to maintain an acceptable elongation (relative elongation at break) compared to the base material and to study the effects of quenching by water on structural development and relaxation in the weld-affected zone.
This research will help industry professionals develop pipe collection devices and produce high-quality HDPE welds that reduce the cost of welding operations and shift toward more sustainable manufacturing processes.
Online since: May 2012
Authors: Jun Hai Li
The pore water pressure is correlative with the soil’s permeability and compressibility, and the pore water pressure value increases with the depth increasing in the same strata.
In clayey soil, the pore water pressure increases linearly with the depth increasing.
The relation between pore water pressure ratio and depth is determined by the ratio of hyper-pore-water pressure and cone tip resistance.
Otherwise, if it is variable, the pore water pressure ratio will change too.
References [1] Lunne, T., Robertson, P.K. and Powell, J.J.M., “Cone penetration testing in geotechnical practice”, 1997, Blackie Academic and Professional, London
In clayey soil, the pore water pressure increases linearly with the depth increasing.
The relation between pore water pressure ratio and depth is determined by the ratio of hyper-pore-water pressure and cone tip resistance.
Otherwise, if it is variable, the pore water pressure ratio will change too.
References [1] Lunne, T., Robertson, P.K. and Powell, J.J.M., “Cone penetration testing in geotechnical practice”, 1997, Blackie Academic and Professional, London
Online since: January 2022
Authors: Leonid I. Dvorkin, P. Thiele, J. Khatib, A. Abdalqader, Nataliya Lushnikova, Mohammed Sonebi
The mixes were designed to suit shattered wall and roof applications following the Frensh professional rules for hemp concrete structures.
When used, VMA was added as 20% of water mass.
Then the tray was filled with water until cubes were immersed in a constant level of water: 8mm.
This is the initial rate of absorption (IRA) and is the amount of water that is absorbed after 1 minute of exposure and represents the initial water suction from a free water surface.
Secondly as the test enable the water to enter only by one face, the water absorption in kilograms per square meter has been calculated.
When used, VMA was added as 20% of water mass.
Then the tray was filled with water until cubes were immersed in a constant level of water: 8mm.
This is the initial rate of absorption (IRA) and is the amount of water that is absorbed after 1 minute of exposure and represents the initial water suction from a free water surface.
Secondly as the test enable the water to enter only by one face, the water absorption in kilograms per square meter has been calculated.
Online since: January 2014
Authors: Yong Jin Liu
When we greet the arrival of a comprehensive “urban age”, we must change the process of trade logistics park ecosystem towards to a more sustainable energy, land, water, materials and environmental protection eco-development model.
According to the main elements of urban ecology, the current ecological challenges of the trade logistics park can be subdivided into the energy system, water system, circulatory system and atmospheric circulatory system.
(3) Provide professional quality storage, packaging, processing, distribution, information services.
We must change the process of logistics park ecosystem towards to a more sustainable energy, land, water, materials and environmental protection eco-development model.
According to the main elements of urban ecology, the ecological challenges of the logistics park can be subdivided into the energy system, water system, circulatory system and atmospheric circulatory system.
According to the main elements of urban ecology, the current ecological challenges of the trade logistics park can be subdivided into the energy system, water system, circulatory system and atmospheric circulatory system.
(3) Provide professional quality storage, packaging, processing, distribution, information services.
We must change the process of logistics park ecosystem towards to a more sustainable energy, land, water, materials and environmental protection eco-development model.
According to the main elements of urban ecology, the ecological challenges of the logistics park can be subdivided into the energy system, water system, circulatory system and atmospheric circulatory system.
Online since: May 2014
Authors: Chang Wei He, Xiao Ping Jia, Yuan Liu, Meng Zhang
On the feed water pipe of the evaporators of all cold store rooms, there are solenoid valves, which are controlled by relays.
According to the new cold store’s size and reference some professional standards, the total heat load is worked out.
Choosing Condenser On board, water is plentiful and the cold stores are usually equipped with horizontal shell and tube condensers.
When choosing a condenser, the calculation mainly includes the heat exchange area, cooling water flux and the water resistance losing in the condenser.
According to the new cold store’s size and reference some professional standards, the total heat load is worked out.
Choosing Condenser On board, water is plentiful and the cold stores are usually equipped with horizontal shell and tube condensers.
When choosing a condenser, the calculation mainly includes the heat exchange area, cooling water flux and the water resistance losing in the condenser.
Online since: February 2013
Authors: Hao Ran Song
Introduction
Ship manipulation Simulation Manager system involves computer, and simulation, and engineering control, and water dynamics, and ship manipulation and the communications navigation, technology, it is will radar, and ARPA and the navigation features Yu one, has has radar simulation Manager of all features, and equipment has clock depending on King displayed, to displayed day and night and various visibility of depending on King, and a more full of driving Taiwan operation equipment, can intuitive to simulation and displayed in sea or port navigation and the manipulation situation, Simulation can be achieved using ship handling Simulator for training purposes.
International navigation Simulator Association taking into account the STCW78/95 Simulator-related requirements of the Convention and to ensure and improve the quality of simulator training, classification on the Simulator, simulators are divided into four categories, namely: (1) Visual Simulator (Full Mission): the capacity to simulate all the environment, can be ship maneuvering in narrow waterways and water training.
(2) multi-purpose simulators (Multi Task): ability to simulate navigation environment, can be used in restricted waters ship handling training.
Hydrodynamic calculation for simulation of ship navigation by ships. 2) to electronic chart as the background operation waters 3) generation of radar/ARPA images /ARPA image generation system of radar, ARpA and radar images of the training area information,.
The database first by IMO STCW78/95 Convention under or national maritime Council ships crew right any examination and assessment outline under and "about professional and special training examination and assessment outline" of requirements set training project, again application expert system principle imitation avoidance touch expert of thinking (that based Yu 1972 International Sea avoidance touch rules under and expert on rules under of explained), and large real fuck Hou are of data, for fuzzy integrated evaluation, after calculation Hou concluded that evaluation standard data storage in database within, To be compared with the participants practical training.
International navigation Simulator Association taking into account the STCW78/95 Simulator-related requirements of the Convention and to ensure and improve the quality of simulator training, classification on the Simulator, simulators are divided into four categories, namely: (1) Visual Simulator (Full Mission): the capacity to simulate all the environment, can be ship maneuvering in narrow waterways and water training.
(2) multi-purpose simulators (Multi Task): ability to simulate navigation environment, can be used in restricted waters ship handling training.
Hydrodynamic calculation for simulation of ship navigation by ships. 2) to electronic chart as the background operation waters 3) generation of radar/ARPA images /ARPA image generation system of radar, ARpA and radar images of the training area information,.
The database first by IMO STCW78/95 Convention under or national maritime Council ships crew right any examination and assessment outline under and "about professional and special training examination and assessment outline" of requirements set training project, again application expert system principle imitation avoidance touch expert of thinking (that based Yu 1972 International Sea avoidance touch rules under and expert on rules under of explained), and large real fuck Hou are of data, for fuzzy integrated evaluation, after calculation Hou concluded that evaluation standard data storage in database within, To be compared with the participants practical training.