Factbites
 Where results make sense
About us   |   Why use us?   |   Reviews   |   PR   |   Contact us  

Topic: Tolerance engineering


Related Topics

In the News (Sun 7 Sep 08)

  
  Tolerance - Wikinfo
Tolerance, in a social, cultural and religious sense, is the acceptance of other people who hold different and disagreeing beliefs, or otherwise represent ideologies or cultures that have a history of being disrespected.
Tolerance is weaker than respect: a disagreeable party may still be disapproved of, and interaction may be limited to what is necessary, the disagreeable party is simply left undisturbed.
In engineering, tolerance is an allowance made for imperfections in a manufactured object.
www.wikinfo.org /wiki.php?title=Tolerance   (1324 words)

  
 GMO Food For Thought: Engineering Drought Tolerance
A drought tolerant transgenic wheat variety is being evaluated and may be ready for commercialization within five years.
Monsanto is a world leader in agricultural biotechnology research and drought tolerance is going to be a popular trait in their future crop varieties.
One particular drought tolerant corn variety is moving through the regulatory pipeline and may be ready for commercialization as early as 2010.
www.gmofoodforthought.com /2006/07/engineering_drought_tolerance.htm   (1044 words)

  
  Amazon.com: Tolerance Design: A Handbook for Developing Optimal Specifications: Books: Clyde M. Creveling   (Site not responding. Last check: )
This is the first book in the history of engineering science to comprehensively address the analytical and experimental methods available for the development of tolerances.
Tolerance Design instills a philosophy that tolerance development is as much about cost optimization as it is about functional integrity.
The point is that regardless of whether the engineer or the designer or both establish the tolerances, the tolerances are critical to the successful manufacture and performance of the product over its intended life cycle.
www.amazon.com /Tolerance-Design-Handbook-Developing-Specifications/dp/0201634732   (2167 words)

  
  General 2-D Tolerance Analysis of Mechanical Assemblies with Small Kinematic Adjustments
For example, a geometric feature tolerance may be used to limit the flatness of a surface, or the perpendicularity of one surface on a part relative to established datums, as shown in Figure 4.
In contrast to this, the kinematic inputs of an assembly tolerance analysis model are small variations of the component dimensions around their nominal values and the outputs are the variations of assembly features, including clearances and fits critical to performance, as well as small kinematic adjustments between components.
Component tolerance limits are determined from process characterization studies, but may have to be modified as a result of tolerance analysis, which reveals how each component variation contributes to the overall assembly variation.
adcats.et.byu.edu /WWW/Publication/94-1/Paper1-12_6.html   (4762 words)

  
  Tolerance Stack Up
Tolerance is seen as a more widely acceptable term than "acceptance" and particularly "respect," where the application to controversial parties is concerned.
The circumstantial element in the practice of tolerance is right judgment of greater ends against lesser ends.'' Is not the natural conclusion to this sentence ''thus enabling lesser ends to be sacrificed to greater ends.'' I recognize the school of thinking, but it's not known for its tolerance.
The unintended consequence of zero tolerance policies is the lack of discretion given to administrators, employers or judges, as the case may be.
www.breadlike.com /pages7/88/tolerance-stack-up.html   (1459 words)

  
 ENGINEERING SALT TOLERANCE IN CROP PLANTS   (Site not responding. Last check: )
This continual loss of farmable land due to salinization is directly in conflict with the needs of the world population, projected to increase by 1.5 billion in the next 20 years, and poses a formidable challenge to the task of maintaining world food supplies.
The utilization of inorganic ions for osmotic adjustment would suggest that salt-tolerant plants must be able to tolerate high levels of salts within their cells.
Salt tolerance of wild-type tomato plants and transgenic plants overexpressing AtNHX1 grown in the presence of 200 mM NaCl.
www.plantstress.com /Files/engineering_salt.htm   (1361 words)

  
 Opiate Tolerance
espite the existence of a large body of information on the subject, the mechanisms of opiate tolerance and dependence are not yet fully understood.
A further complication of studies of opiate tolerance and dependence is the multiplicity of endogenous opiate receptors and peptides.
Alterations at the receptor and transduction level have been the focus of many studies of opiate tolerance and dependence.
opioids.com /tolerance   (359 words)

  
 globeandmail.com: Engineering drought tolerance
A drought tolerant transgenic wheat variety is being evaluated and may be ready for commercialization within five years.
Monsanto is a world leader in agricultural biotechnology research and drought tolerance is going to be a popular trait in their future crop varieties.
One particular drought tolerant corn variety is moving through the regulatory pipeline and may be ready for commercialization as early as 2010.
www.theglobeandmail.com /servlet/story/RTGAM.20060612.gtflwagerjun12/BNStory/Technology/einsider   (994 words)

  
 Functional Genomics of Plant Stress Tolerance   (Site not responding. Last check: )
Largely conserved are stress sensing, transduction of the signal and the regulation and functioning of the downstream gene induction and repression machinery (Frommer and Ninnemann, 1995; Serrano, 1995; Shinozaki and Yamaguchi-Shinozaki, 1997: Zhu et al., 1997; Ishitani et al., 1997; Nelson et al., 1998).
Consequences of the overexpression of ubiquitin in yeast: elevated tolerances of osmostress, ethanol and canavanine, yet reduced tolerances of cadmium, arsenite and paromomycin.
The long-term goal of this project is to sequence all of the expressed genes in ice plant leaves to fully understand the molecular aspects of CAM and to lay the foundation for physical mapping and sequencing of the ice plant genome.
www.stress-genomics.org /stress.fls/about/NSF_prop.html   (17360 words)

  
 Events Nutrition Foundation of India
It is being realised that any of these genes alone might not provide the required tolerance levels in the plants, while, pyramiding these genes is one of the alternatives which is being explored for engineering tolerance to abiotic stresses.
However, breeding for them is tedious and time consuming and, therefore, the success rate is limiting as compared to the genetic engineering approach which brings in a precise change in a genotype through the directed transfer and expression of a gene that controls a given trait of economic importance in an otherwise agronomically superior genotype.
Apprehensions on their accidental transfer to microbes in the human system in case of antibiotic tolerance and to wild relatives in case of herbicide tolerance have been raised at various fora.
nutritionfoundationofindia.res.in /archives.asp?archiveid=29&back=bydate.asp   (3648 words)

  
 Tolerance Design: A Handbook for Developing Optimal Specifications - $60.00   (Site not responding. Last check: )
The point is that regardless of whether the engineer or the designer or both establish the tolerances, the tolerances are critical to the successful manufacture and performance of the product over its intended life cycle.
As in all engineering tasks, the need for a disciplined process is essential to assure that the life cycle cost goals, including the customer's cost goals, are actually met.
The detailed procedures that are necessary to perform tolerance design on components that have first undergone parameter design is thoroughly documented and,ow-charted, as is the process of performing tolerance design on components that have not been made robust and are in need of improvement.
www.phptr.com /title/0201634732   (2645 words)

  
 USA Tolerance Rings thermal expansion vibration bearing mount
The Tolerance Ring is a precision-engineered device made form a thin spring steel strip of material into which waves, corrugations or bumps are formed.
Component tolerances are directly related to the torque range and must be controlled, typically within.001” (.0025mm).
Component tolerances, on the other hand, are loosely related to the force range and large commercial tolerances can be tolerated.
www.usatolerancerings.com /howringswork.html   (1948 words)

  
 Budapest MS
In the evolutionary adaptationist program, investigators either locate existing populations that differ in stress tolerance or create study populations through experimental selection on pre-existing variation, choose an underlying trait for analysis and hypothesize its effect on stress tolerance, and perform experiments or observations to test for the predicted covariation between the trait and stress tolerance.
Much of our knowledge of the traits that contribute to stress tolerance has come from comparisons of individuals, populations, species, and/or higher taxa in contrasting environments, in which differences in traits are found to be consistent with differences in stress tolerance.
Correlations of stress tolerance and underlying traits have readily led to reductionistic studies, which have elucidated numerous candidate mechanisms of stress tolerance.
pondside.uchicago.edu /~feder/MSS/buda.html   (6977 words)

  
 Annex II Genetic Engineering for Abiotic Stress Tolerance in Plants
The work on genetic engineering of tolerance to abiotic stresses began piece meal within a decade of the molecular understanding of pathways induced in response to one or more of the abiotic stresses.
The use of multiple tolerance mechanisms for one or more of the abiotic stresses through stepwise or co-transformation may help to achieve high levels of tolerance for commercial exploitation.
The QTL mapping of stress tolerance in certain species, comparative mapping and map based cloning in plants may be used to screen genes which function under stress as well as those induced and expressed in response to stress.
www.fao.org /WAIRDOCS/TAC/Y5198E/y5198e04.htm   (1606 words)

  
 Friction - Engineering
While this can be beneficial, as in polishing, it is often a problem, as the materials are worn away, and may no longer hold the specified tolerances.
One technique used by railroad engineers is to back up the train to create slack in the linkages between cars.
Since heat quickly dissipates, and the change in velocity of the Earth cannot be seen, many early philosophers, including Aristotle [[4]], wrongly concluded that moving objects lose energy without a driving force.
engineering.wikia.com /wiki/Friction   (1446 words)

  
 Information Systems for Biotechnology/NBIAP News Report
The research shows that several cold tolerant genes can be activated in the plant by introducing a key regulatory gene, thus helping them defend against a cold snap.
The response of transgenic plants was similar to the cold-acclimated, untransformed plants indicating that the cold tolerance was achieved by tricking the plants to continuously produce COR proteins through transcriptional activation.
Electrolyte leakage tests, which measure the amount of ions leaking from plant cell membranes due to cold damage, also indicated that freezing tolerance of transgenic plants was similar to that of cold acclimated nontransgenic plants.
www.nbiap.vt.edu /news/1998/news98.may.html   (2848 words)

  
 Amazon.ca: Geometric Dimensioning and Tolerancing: Applications and Inspection: Books: Gary K. Griffith   (Site not responding. Last check: )
This book is designed specifically for operators, machinists, inspectors, quality technicians and engineers, and other people in manufacturing companies who have the need to know about inspection methods and techniques.
In every case, the rules and tolerance zones for each symbol are the same as the examples indicate, except that different amounts of tolerances are often applied.
It is important to understand that all the tolerance values used in this book are examples only and do not in any way constitute standard tolerance values.
www.amazon.ca /Geometric-Dimensioning-Tolerancing-Applications-Inspection/dp/0130604631   (1512 words)

  
 Spedo Engineering manufacturer of precision machined components
Spedo Engineering Ltd is a leading manufacturer of a wide range of high precision machined components and assemblies for both blue chip and SME clients.
Spedo Engineering is located in Hampshire which, with its motorway and rail links, enables the company to offer a strategic service and support to customers throughout the country.
Spedo Engineering's staff take absolute pride in the company's reputation for extremely high quality products and are dedicated to providing customers with consistent high performance, exceptional service and world-class support.
www.spedo-engineering.co.uk   (225 words)

  
 Close Tolerance Engineering - Precision Machining & CNC Turning
Close Tolerance Engineering produce superior quality precision parts from small to large quantity batches whilst maintaining a competitive edge over other machinists.
More information regarding our engineering services can be found on our services page.
Close Tolerance Engineering is a family owned business located in Perth, Western Australia.
www.closetoleranceengineering.com.au   (193 words)

  
 Tolerance (Engineering) | Business solutions from AllBusiness.com
This is a job description form detailing the skills and knowledge required to fill a position for a Electrical Engineering Technician.
Design engineers often lack the practical field experience necessary to provide construction documents that reflect job-site requirements.
In my last two articles, I discussed tolerance clouds associated with fabrication and placement of reinforcing bars.1,2 While every builder strives to cast concrete to...
www.allbusiness.com /tolerance/3083241-1.html   (857 words)

  
 research interests
The identification and characterization of the mechanisms regulating plant growth under saline conditions is leading to the molecular characterization and manipulation of proteins associated with salt-tolerance in plants.
A potential limitation of recombinant DNA technology is that stress tolerance is complex, requiring the response of many genes.
A genetic engineering strategy we are pursuing, namely the over-expression of transcriptional activators such as the CBF/DRE family has a much higher potential for success than strategies relying on single stress adaptive transgenes because multiple adaptive genes would be overexpressed.
www.ag.unr.edu /cramer/research_interests.htm   (1413 words)

  
 Checkbiotech.org   (Site not responding. Last check: )
At present this transgenic (produced by genetic engineering) wheat is undergoing bio-safety assessments in preparation for commercialization.
Using this type of GURT the pollen or seed of the drought tolerant crop would be sterile so there would be no transfer of the drought resistance into other crops or natural weed populations.
Monsanto is a world leader in agricultural biotechnology research and drought tolerance is going to be a popular trait in their future crop varieties.
www.checkbiotech.org /root/index.cfm?fuseaction=news&doc_id=13136&start=1&control=188&page_start=1&page_nr=101&pg=1   (850 words)

  
 Biocenter - Research Groups - Stress responses and biotechnology of birch etc.
We have previously isolated and characterized a number of Arabidopsis genes that are responsive to low temperature, drought and the phytohormone ABA and shown the presence of distinct signal pathways leading to their activation.
The work is focused on two types of studies: (i) elucidation of the signal perception and transduction processes leading to cold acclimation in both Arabidopsis and birch and (ii) functional studies of the response genes and proteins as well as engineering stress tolerance.
The information obtained is utilized for developing plants with enhanced tolerance to freezing and drought stress.
www.biocenter.helsinki.fi /groups/PALVA/PALVA.HTML   (893 words)

  
 Department of Fire Protection Engineering - Cultural Tolerance for Fire Disasters
It is curious how outraged we are after a fire disaster but how tolerant we are of buildings that are disasters waiting to happen.
The tragedy is that so many innocent people entered this facility with no knowledge whatsoever that the space they occupied could turn into a deadly, blazing inferno in two or three minutes.
A higher level of accountability needs to be engrained in the way we think about building safety and the way we enforce laws and regulations.
www.wpi.edu /Academics/Depts/Fire/News/14322.htm   (876 words)

  
 Transplant Rejection Treatment
The first generation of tissue engineering is the creation of immunoisolated devices that combine living cells and biomaterials.
This is a process where autologous stem cells are used to tissue engineer organs for transplantation.
Tissue engineering holds much promise, and with time, money, and research, the early problems currently encountered will almost certainly be worked out.
biomed.brown.edu /Courses/BI108/BI108_2004_Groups/Group04/Tissue_Engineering.htm   (607 words)

  
 Microbial Cell Factories | Full text | Organic acid toxicity, tolerance, and production in Escherichia colibiorefining ...
Although the underlying tolerance mechanism is not known, such tolerance can be reliably activated by adapting cells at sublethal pH values between 4.3 and 5.8 [53].
Finally, acid tolerance can be achieved by adjusting the ionic transporter efficiency, effectively regulating the anion and cation balance as a means of maintaining a constant internal pH [47].
Strains were engineered to limit flux to other anaerobic byproducts normally formed during fermentation [60].
www.microbialcellfactories.com /content/4/1/25   (4623 words)

  
 USA Tolerance Rings
The tolerances on the housings range from.0039 mm (.00015 inch) to.025mm (.001 inch).
Tolerance rings allow the use of a less expensive precision ball bearing.
Tolerance Rings provide a snug fit in the housing without the risk of bearing lockup
www.usatolerancerings.com /bearings.html   (385 words)

  
 Wirehead hedonism versus paradise-engineering
If we wish to do so, then genetic engineering and nanotechnology can be used to banish unpleasant modes of consciousness from the living world.
Hedonic tone must be functionally coupled to motor-responses initiated on the basis of the perceived significance of the stimulus to the organism, and of the anticipated consequences - adaptively nice or nasty - of simulations of alternative courses of action that the agent can perform.
Unlike food, drink or sex, the experience of pleasure itself exhibits no tolerance, even though our innumerable objects of desire certainly do so.
www.wireheading.com   (3321 words)

Try your search on: Qwika (all wikis)

Factbites
  About us   |   Why use us?   |   Reviews   |   Press   |   Contact us  
Copyright © 2005-2007 www.factbites.com Usage implies agreement with terms.