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Articles 26581 - 26610 of 27312

Full-Text Articles in Engineering

Irish Building Services News Dec 1989

Irish Building Services News

Building Services Engineering

No abstract provided.


Irish Building Services News Oct 1989

Irish Building Services News

Building Services Engineering

No abstract provided.


Irish Building Services News Sep 1989

Irish Building Services News

Building Services Engineering

No abstract provided.


31st Rocky Mountain Conference Jul 1989

31st Rocky Mountain Conference

Rocky Mountain Conference on Magnetic Resonance

Program and registration information for the 31st annual meeting of the Rocky Mountain Conference, co-sponsored by the Rocky Mountain Section of the Society for Applied Spectroscopy and the Rocky Mountain Chromatography Discussion Group. Held in Denver, Colorado, July 30 - August 4, 1989.


Irish Building Services News Jul 1989

Irish Building Services News

Building Services Engineering

No abstract provided.


Carrying Capacity And Cracking Resistance At The Support Zone Of Halving Joints In Reinforced Concrete Beams, H. W. Chung Jun 1989

Carrying Capacity And Cracking Resistance At The Support Zone Of Halving Joints In Reinforced Concrete Beams, H. W. Chung

Tanzania Journal of Engineering and Technology (TJET)

Abstract


Simulation Of Fluid Flow In Packed Beds Using A Simplified Model And Network Analysis Technique, Haggai W.K. Sarakikya Jun 1989

Simulation Of Fluid Flow In Packed Beds Using A Simplified Model And Network Analysis Technique, Haggai W.K. Sarakikya

Tanzania Journal of Engineering and Technology (TJET)

Abstract


Metabolic Activity Of Microorganisms Cultured On Inhibitory In Unsteady State, Cleophas L.C. Migiro Jun 1989

Metabolic Activity Of Microorganisms Cultured On Inhibitory In Unsteady State, Cleophas L.C. Migiro

Tanzania Journal of Engineering and Technology (TJET)

Abstract


Flowsheet Simulation Studies Of New Oilseed Extraction Processes, M. Khalfani Jun 1989

Flowsheet Simulation Studies Of New Oilseed Extraction Processes, M. Khalfani

Tanzania Journal of Engineering and Technology (TJET)

Results are reported on the flowsheet simulation studies of new oilseed processes suitable for local conditions. A process model was developed and new design simulation methods using Computer Aided Design (CAD) approach were employed for the preliminary investigation of a number of alternative scenarios.

Results have shown that new processes should give considerable investment savings if separation of the crude product is not carried out by distillation. However, the economics of processes using alternative separation technology is highly dependent on operating conditions.

The use of spreadsheet programs for flowsheet evaluation studies offers opportunities for application of CAD techniques in local …


A Reiner-Rivlin Fluid Flow Through Entrance Region Of A Circular Pipe, V. G. Masanja Jun 1989

A Reiner-Rivlin Fluid Flow Through Entrance Region Of A Circular Pipe, V. G. Masanja

Tanzania Journal of Engineering and Technology (TJET)

The flow of a Reiner-Rivlin fluid with two viscosity coefficients through the entrance region of a circular pipe has been studied numerically. In particular the growth of the entrance length as a function of the Reynolds number and the non-Newtonian parameters has been examined. Where comparison could be made, the results have been compared with existing experimental -and numerical data as well as the limited theoretical work available.


Carrying Capacity And Cracking Resistance Of The Bracket, S. Mpinzire Jun 1989

Carrying Capacity And Cracking Resistance Of The Bracket, S. Mpinzire

Tanzania Journal of Engineering and Technology (TJET)

Abstract


A Dss For Animal Nutrition Planning, Krishna Prasad, M R Gopalan, S Sridhar Jun 1989

A Dss For Animal Nutrition Planning, Krishna Prasad, M R Gopalan, S Sridhar

IIMB Management Review

In recent years, after the much acclaimed success of the Green
Revolution, the nation’s planners are coming to realize that it is not adequate for
the nation to have enough to eat, it is also important to have quality food. There
has, therefore, recently been a new emphasis on industries such as dairy and
poultry. It has been realized that there is a need to harness India’s enormous
animal resources. (There are, by one estimate, some 480 million livestock in the
country, including about 230 million cattle and 136 million poultry). Significant
improvements in the productivity of livestock can be …


A Dss For Farm Management, Y Kashi Vishwanadhan Jun 1989

A Dss For Farm Management, Y Kashi Vishwanadhan

IIMB Management Review

Farm management is a decision process. The tarmer and the state as
decision makers at different operational levels have some what conflicting
objectives to achieve-the farmer has to choose between alternative use of
scarce resources - land, labour and capital and operate his farm to maximize
the net returns; whereas the state has to increase the agriculture production to
meet the demand of the population even at higher levels of input costs. It has to
take decisions relating to Support Prices for various crop products, credit and
input supply in such a manner as to ensure healthy progress in the …


Understanding Computers By Dinesh Kumar, New Delhi: Bpb Publication, 1988., S Jagadish Jun 1989

Understanding Computers By Dinesh Kumar, New Delhi: Bpb Publication, 1988., S Jagadish

IIMB Management Review

No abstract provided.


A Dss For Optimal Product Mix For Dairy Plant Operation, V Nagadevara Jun 1989

A Dss For Optimal Product Mix For Dairy Plant Operation, V Nagadevara

IIMB Management Review

The dairy industry in India has become very well organised as a result of
Operation Flood Programmes and massive World Bank aid. A number of Dairy
Development Corporations and Producers. Cooperative Societies have come
into being as corporate bodies apart from private dairies already in operation.
These Dairy Development Corporations essentially follow the Anand Model of
cooperative structure. This Structure builds on a vertically integrated single
industry cooperative that links rural producers with urban consumers by
introducing intensive milk production systems and improved technology for
processing and marketing. It is a three tiered structure. The three tiers are (i)
the …


A Sugar Movement Planning System For Kerala State Civil Supplies Corporation, Nirmala Hindupur Jun 1989

A Sugar Movement Planning System For Kerala State Civil Supplies Corporation, Nirmala Hindupur

IIMB Management Review

Public distribution of essential commodities is a vital sector of the Indian
economy. This sector, with its diverse activities, has tremendous scope for
efficiency improvement and cost control through the implementation of
Computer-Aided Management (CAM) Systems. Because of its vital importance,
this area is one of the thrust areas selected by CAM Centre, ASCI, Hyderabad
for the development of CAM systems.
The Kerala State Civil Supplies Corporation Ltd. (KSCSC) is one of the
organizations identified for the development of CAM systems.
This paper describes the Sugar Movement Planning System designed
and developed under the GAM project by the author at …


Computerized Location And Distribution Of Fertilizer, V B Kaujalgi, A K Rao Jun 1989

Computerized Location And Distribution Of Fertilizer, V B Kaujalgi, A K Rao

IIMB Management Review

Distribution of manufactured products to the places of consumption is a well known management problem, and a complex one on account of the size of
the problem, the variety of modes of transportation available, Government regulations and management conditions. It is very difficult even for an expert
manager to work out an acceptable plan of distribution of the commodity in a reasonable time. Day to day management of the distribution is almost
impossible by the manual method for even a medium size distribution problem. Computers are now playing an important role in management decision
making. Such applications are becoming attractive …


A Software Package For Time-Tabling And Scheduling Of A City Transport System, V B Kaujalgi, A K Rao, T A S Vijayaraghavan Jun 1989

A Software Package For Time-Tabling And Scheduling Of A City Transport System, V B Kaujalgi, A K Rao, T A S Vijayaraghavan

IIMB Management Review

The planning control and implementation of an urban transportation
system is a complicated decision process. In practice, due to its complexities,
the problem has to be divided into sub problems considering only certain
aspects of such a system. Hence the focus of the present paper is on the
vehicle time-tabling and scheduling aspects of a city transportation system. A
computer software package for an urban road transport manager in his
day-to-day operations is developed. It can also be used for planning purposes.
The transport sector in any city is generally managed by public sector
organizations. Such systems are very complex. …


Irish Building Services News May 1989

Irish Building Services News

Building Services Engineering

No abstract provided.


Irish Building Services News Apr 1989

Irish Building Services News

Building Services Engineering

No abstract provided.


Irish Building Services News Feb 1989

Irish Building Services News

Building Services Engineering

No abstract provided.


The Development Of An Efficient Lupin Harvesting Front, E D. Blanchard Jan 1989

The Development Of An Efficient Lupin Harvesting Front, E D. Blanchard

Journal of the Department of Agriculture, Western Australia, Series 4

Harvest losses represent a significant reduction in lupin production and farm productivity.

Since 1984, the Department's Farm Machinery Research and Liaison Unit at the Dryland Research Institute has studied the lupin harvesting operation to improve its mechanical efficiency. An experimental and a prototype harvesting front were built and tested in the field. Guidlines for efficient lupin harvesting were produced, and commercial modifications developed.


Second Level Alignment Of The Pe Model 140, Louis G. Anastos Jan 1989

Second Level Alignment Of The Pe Model 140, Louis G. Anastos

Journal of the Microelectronic Engineering Conference

The Perkin Elmer Model 140 was investigated for second level alignment. Using a photolithographic evaluation mask, inspection of six wafers yielded overlay errors. The average x-translational error was -1.95 urn, the average y-translational error was -.4um, and the average rotational error was -.0005 uradians.


Advances In Process Modeling At Rit Suprem Iii And Minimos, John Bettencourt Jan 1989

Advances In Process Modeling At Rit Suprem Iii And Minimos, John Bettencourt

Journal of the Microelectronic Engineering Conference

Process technology for integrated circuit fabrication continues to change and an efficient simulation of process capability must be assured, to avoid time-consuming and costly empirical approaches. Suprem III and MINIMOS are process/device modeling programs that will permit the process/device engineer to accurately simulate complete silicon fabrication technologies. An initial report on these two software packages is given here.


Characterization Of Wells For The Cmos Process, Ed Black Jan 1989

Characterization Of Wells For The Cmos Process, Ed Black

Journal of the Microelectronic Engineering Conference

SUPREM simulations were run to determine a junction depth of 3um and a sheet resistance of approximately 5kohms/square to be used in wells for CMOS fabrication. From these results an experiment involving an implant energy of SO KeV, doses of 4E12/cm2, and 8E12/cm2, drive-in temperatures of 1100C and 1150C, and drive-in times between 2 and B hours was performed. Sheet resistances, measured using a four point probe, and junction depth, measured using a groove and stain tool, correlated well to SUPREM simulations.


Anaylsis Of Kti-820 Positive Resist Using The Perkin Elmer Development Rate Monitor, Maia Bodnarczuk Jan 1989

Anaylsis Of Kti-820 Positive Resist Using The Perkin Elmer Development Rate Monitor, Maia Bodnarczuk

Journal of the Microelectronic Engineering Conference

Experimental analysis via the Perkin Elmer Development Rate Monitor (DRM) has determined that KTI-820 resist, when exposed at 48 mJ/cm2 and developed for 30 sec in KTI-934 developer, gives optimum results. That is, 2 micron line-space pairs have been successfully reproduced with minimal sidewall sloping.


Using The Gca 4800 Dsw Wafer Stepper As A Photorepeater For The Fabrication Of Chrome And Aluminum Masks, Scott M. Bruck Jan 1989

Using The Gca 4800 Dsw Wafer Stepper As A Photorepeater For The Fabrication Of Chrome And Aluminum Masks, Scott M. Bruck

Journal of the Microelectronic Engineering Conference

Utilization of the GCA DSW 4800 as a PHOTOREPEATER enables the production of masks with flexibility, resolution, speed, and precision. A new chuck directly interchangeable with a standard GCA 100 Millimeter wafer chuck was machined for simple conversion from STEPPER to PHOTOREPEATER. Commercial Chrome plates and Quartz plates with thermally evaporated Aluminum films were coated with KTI-820, exposed, and etched. Chrome film resolved to 1 micron and the Etched Aluminum resolved to 3 microns.


Ecl Circuits, John J. Bush Jan 1989

Ecl Circuits, John J. Bush

Journal of the Microelectronic Engineering Conference

Emitter Coupled Logic (ECL) gates were fabricated on a n-epi layer. SUPREM was used to simulate the fabrication including junction depth and sheet resistance. The Integrated Circuit Editor was used to layout the design based on SUPREM parameters. SPICE was also used to confirm the proper operation of the devices. Testing was limited due to a lack of a probe card for the logic analyzer. But, an npn transistor was tested with a gain of one indicating a working device was present. A subcollector implant was not performed due to the time constrains placed on the project.


Study Of The Characteristics Of Dyed Photoresist, Brad Campbell Jan 1989

Study Of The Characteristics Of Dyed Photoresist, Brad Campbell

Journal of the Microelectronic Engineering Conference

Undyed, AZ 1512,and dyed, AZ 1512-SFD, photoresist was coated on aluminum covered oxide topography. The exposure was varied from 7OmJ/cm2 to 130m3/cm2 and the 3.Oum line/space pairs were measured to calculate the exposure latitude. The resist lines were examined over topography for signs of reflective notching. Results showed an increase of the exposure latitude from 9.1% to 9.9% for the dyed resist. The data was inconclusive in determining any improved control of reflective notching with the use of dyed photoresist.


Characterization Of Arc, Cynthia A. Carr Jan 1989

Characterization Of Arc, Cynthia A. Carr

Journal of the Microelectronic Engineering Conference

Two Anti-reflective coatings (ARC), ARC-XL end ARC-PN2, were studied f or process latitude. Temperature bake and exposure dose were varied and their effect on 5.Oum line/space pairs was evaluated. Using the software package RS1 a full factorial experiment with centerpoints was designed. The two ARCs used, did reduce notching and the manufacturer’s processing ranges were verified. However, to establish the process latitude a wider range of exposure doses needs to be evaluated.