Search results

Title: Refined Permission Constraints Using Internal and External Data Extraction in a Role-based Access Control System
Creator: Frieder, Ophir, Ren, Shangping
Date: 2012-09-19, 2012-09-18
Description: The present invention can enable increasing refinement of role-based permission to access data within a Role Based Access Control (RBAC)...
Show moreThe present invention can enable increasing refinement of role-based permission to access data within a Role Based Access Control (RBAC) controlled computer system by enabling constraints to be written on the role-based permissions. The constraints may utilize each and every type or combination of subject, object, or environment information extracted from sources internal or external to the controlled computer system and may evaluate the content or context of the information extracted to enable refined and dynamic access after the role permission assignment and immediately before every access grant without the reassignment of roles.
Sponsorship: Illinois Institute of Technology
United States Patent
Primary US Patent Classification 707/783
International Patent Classification G06F 17/30
Show less

Title: GreenBuidingDesignConcept_IntegrationIPRO335Poster1F09

Title: Test of a 400 hp gas producer at Armour & Co., Chicago, Ill.
Creator: Boblett, K. M., Boughton, N. J.
Date: 2009, 1909
Publisher: Armour Institute of Technology
Description: http://www.archive.org/details/testof400hpgaspr00bobl
Thesis (B.S.)--Armour Institute of Technology; Includes bibliographical references(...
Show morehttp://www.archive.org/details/testof400hpgaspr00bobl
Thesis (B.S.)--Armour Institute of Technology; Includes bibliographical references( leaves 78-84) and index
Show less

Title: Electromagnetic Transducer Head Assembly
Creator: Zenner, Raymond E.
Date: 1951-01-16
Description: Sponsorship: Armour Research Foundation of Illinois Institute of Technology
United States Patent

Title: EFFECTS OF THERMAL TREATMENTS ON ELISA DETECTION OF MILK PROTEINS
Creator: Lu, Yingshuang
Date: 2011-07-27, 2011-07
Description: Cow’s milk allergy is one of the most prevalent food allergies in the United States. Commercial ELISA test kits, based on antigen-antibody...
Show moreCow’s milk allergy is one of the most prevalent food allergies in the United States. Commercial ELISA test kits, based on antigen-antibody reactions, are increasingly used by food manufacturers to detect the presence of allergen residues. Milk is a common ingredient used in a variety of foods that are subjected to different degrees of cooking. How thermal processing may affect the quantitative analysis of milk allergens by ELISA test kits needs to be determined. This study first examined the performance of four total protein assays (Pierce 660nm, Modified Lowry, Coomassie, BCA) for quantification of protein residues in thermally processed milk. BCA and Lowry assays were affected by lactose and its Maillard reaction byproducts resulting in the overestimation of protein concentrations in the samples. Pierce 660 nm assay was not affected and therefore was picked as the method for total protein analysis when evaluating commercial ELISA kits. Performances of four ELISA test kits (Veratox for Total Milk Allergen, BioKits BLG Assay Kits, ELISA SYSTEMS Casein and Beta-Lactoglobulin Residue assays) in comparison with the Pierce 660 nm assay for detection of thermally treated milk samples was also evaluated. NIST non-fat milk powder standard reference material 1549 and Backpacker’s Pantry Powdered Whole Milk were either heated in water at 60◦C, 63◦C, boiled, or autoclaved for 10 or 30 min, dry-heated in a mini-oven at 100 - 232◦C for 10 min, or fried in corn oil at 150◦C or 180◦C for 3 min in a deep fryer. Milk proteins in the oil samples were analyzed either directly or after extraction with phosphate-buffered saline with 0.05% Tween (PBST) followed by partitioning in hexane to remove residual oil. The results show that all four ELISA test kits were able to accurately quantify the amount of milk proteins in uncooked oils. Inclusion of the PBST/hexane extraction step prior to test kit analyses did not improve the detection. Elevated heat resulted in a lower level of proteins extracted. While the amount of protein residues determined by Veratox and ELISA SYSTEMS Casein kits were similar to those obtained by the Pierce assay, the BioKits BLG kits registered the highest amount of proteins in samples. On the other hand, ELISA SYSTEMS Beta-Lactoglobulin assay registered the lowest level of proteins in these samples. These results suggest that heat treatment could affect the solubility and possibly the antigenic properties of proteins. Depending on the test kits used, these changes could result in over- or underestimation of protein residues in thermally treated foods.
M.S. in Food Safety and Technology, July 2011
Show less

Title: Study of a selenium cell
Creator: Newlander, R. A.
Date: 2009, 1918
Publisher: Armour Institute of Technology
Description: http://www.archive.org/details/studyofseleniumc00newl
Thesis (B.S.)--Armour Institute of Technology; Bibliography : leaf 33

Title: INVESTIGATION AND CONTROL OF NOROVIRUS TRANSFER DURING PREPARATION OF FRESH PRODUCE IN A FOOD SERVICE SETTING
Creator: Zhao, Heng
Date: 2013-04-24, 2013-05
Description: Outbreaks of human norovirus are commonly attributed to fresh produce and multi-ingredient foods that have received significant handling...
Show moreOutbreaks of human norovirus are commonly attributed to fresh produce and multi-ingredient foods that have received significant handling immediately prior to consumption. The objective of this study was to evaluate the effect of gloved and ungloved hands on norovirus transfer during fresh produce preparation. The palm and fingers of bare or gloved (polyvinyl, vinyl or nitrile) hands were inoculated with approximately 7-log PFU/hand murine norovirus (MNV-1). Freshly chopped Romaine lettuce was handled by the contaminated hands, and then sampled to determine the transfer coefficient. MNV-1 transfer was also measured from chopped contaminated lettuce to clean bare or gloved hands. In addition, pulsed light was investigated, in a preliminary study, for its ability to inactivate MNV-1 on the surface of food contact surfaces including the various glove types and Romaine lettuce, and thus prevent the spread of contamination. Transfer of MNV-1 occurred more readily to (up to 45%) Romaine lettuce than from (less than 12%) it. Transfer to Romaine lettuce was greater (p<0.05) from vinyl gloves than bare hands and the other glove types tested, while no significant difference (p>0.05) in transfer from lettuce to the different glove types was observed. The results indicate that norovirus transfer can occur readily in a food service setting, and that transfer coefficients are affected by the type of surfaces involved. MNV-1 was reduced by pulsed light by >4-log within 30 sec on all surfaces except nitrile gloves, indicating the potential for this technology to be employed in a food service setting to control the spread of noroviruses during food preparation.
M.S. in Food Safety and Technology, May 2013
Show less

Title: Gerry-meandering: An Assessment of the Congressional District Model of Depository Allocation (preprint): AhrensGriffinedrev1
Creator: Ahrens, Aric G., Griffin, Luke A.
Date: 2003-06
Description: The preprint of a published article dealing with the effect of allocating Federal Depositories by Congressional district. Conclusions drawn...
Show moreThe preprint of a published article dealing with the effect of allocating Federal Depositories by Congressional district. Conclusions drawn include the fact that due to redistricting that occurs after each decennial census, over time some districts may have within their boundaries a greater number than the two depositories that Congressional district allocation was intended to produce. Likewise, over time shifting boundaries of districts have created districts that have no depositories whatsoever.
Show less

Title: Peer-to-Peer File Sharing
Creator: Frieder, Ophir, Yee, Wai Gen
Date: 2012-03-20, 2010-04-17
Description: A peer-to-peer (P2P) file sharing system is provided with an enhanced search method for a client node therein. A search from the client...
Show moreA peer-to-peer (P2P) file sharing system is provided with an enhanced search method for a client node therein. A search from the client contains a primary search of metadata words and a secondary search of content file keys taken from the primary search results. The results of the secondary search are then used to rerank the results of the primary search before the client displays the results of the search to the user. Metadata distribution schemes can also be used to further enhance the utility of the system. Enhanced P2P file searching accuracy is thus provided. Applications for selective peer-to-peer communication may further be employed.
Sponsorship: Illinois Institute of Technology
United States Patent
Show less

Title: Stencil Screens
Creator: Kinney, Layton C., Tompkins, Edwin H.
Date: 2009-05-04, 1976-01-27
Description: A blank for forming a stencil screen for silk screen or electrostatic stencil printing is disclosed. The screen includes a resilient, high...
Show moreA blank for forming a stencil screen for silk screen or electrostatic stencil printing is disclosed. The screen includes a resilient, high tensile strength, porous substrate such as a monofilamentary nylon or stainless steel 200-mesh screen. A light radiation absorbent, self-combustible, ink-resistant, ink-impervious and tough film is applied to the screen, suitably a combustible black nitrocellulose film or a black cellulose ether film containing finely dispersed nitrate or perchlorate. The film is selectively removed by directly pulsing high-intensity light of over 10 joules per square inch for a short duration of 1 to 50 milliseconds in the form of an image pattern to ignite and completely combust the film only in said areas during the duration of the pulse.
Sponsorship: IIT Research Institute
United States Patent
Show less

Title: Speed-time curve study of electric railway load conditions
Creator: Banning, Thomas A., Jr
Date: 2009, 1907
Publisher: Armour Institute of Technology
Description: http://www.archive.org/details/speedtimecurvest00bann
Thesis (B.S.)--Armour Institute of Technology

Title: Stochastic mechanism of color confinement, Proceedings of the XLIII International Symposium on Multiparticle Dynamics
Creator: Kuvshinov, V.
Date: 2013-09-15, 2013-09-15
Publisher: IIT Press
Description: It is shown that in stochastic QCD a vacuum color quark is confined due to the interaction with environment, chaotic dynamics of Yang-Mills...
Show moreIt is shown that in stochastic QCD a vacuum color quark is confined due to the interaction with environment, chaotic dynamics of Yang-Mills-Higgsfields, decoherence of pure color state into mixed white (colorless) state and also squeezed, and entangled states appearance. Critical energy of order-chaos transition is obtained which depends on Higgs boson mass. Stochasticity is the root of color confinement disappearing of color at confinement radius.
Sponsorship: IIT College of Science, High Energy Physics Division of Argonne National Laboratory
Show less

Title: MULTIPLE SIGNAL TRANSDUCTION EVENTS AND MODULATION OF OLFACTORY RESPONSES IN MOUSE OLFACTORY SENSORY NEURONS
Creator: Yu, Yiqun
Date: 2012-04-30, 2012-07
Description: In the mammalian olfactory system, one olfactory sensory neuron (OSN) expresses a single olfactory receptor (OR) gene. I studied two subsets...
Show moreIn the mammalian olfactory system, one olfactory sensory neuron (OSN) expresses a single olfactory receptor (OR) gene. I studied two subsets of mouse OSNs, hereafter refered to as Ho-OSNs and AB-OSNs, in intact mouse olfactory turbinates using calcium imaging. Both of Ho-OSNs and AB-OSNs were located in the most ventral olfactory receptor zone. Ho-OSNs were specifically responsive to 2-heptanone (Ho), heptaldehyde (H) and cis-4-heptenal (cH). Dose-dependent analysis indicated that their responses to individual odorant was saturated within one logarithm unit of concentrations, a typical characteristic of isolated OSNs. Binary mixture and crossadpatation studies showed that these three odorants bound to the same binding sites in Ho-OSNs. However, these three structurally similar odorants activated distinct signaling pathways in Ho-OSNs. In detail, 2-heptanone-evoked intracellular calcium elevation was mediated by AC-cAMP signaling, while heptaldehyde triggered the PLC-DAG pathway. The cis-4-heptenal-evoked [Ca2+]i increases resulted from a combination of cAMP mediated activation and suppression involving PLC signaling. Furthermore, the PLCmediated intracellular calcium alteration was independent of IP3 signaling. A further complexity is that these olfactory receptors were able to interact with other types of Gprotein coupled receptors (GPCRs), such as purinergic receptors. I determined that both the P2X3 and P2Y2 receptor subtypes were expressed in Ho-OSNs. Application of purinergic agonists elevated [Ca2+]i increases in Ho-OSNs. It was discovered that the ATP-induced calcium response required either intracellular or extracellular calcium, while depletion of intracellular calcium stores blocked the UTP-evoked [Ca2+]i increases. Purinergic agonists were able to modulate the odor response in Ho-OSNs, and purinergic antagonist experiments showed that modulation of heptaldehyde-induced calcium responses was due to activation of P2X3 receptor subtypes while heptanone-induced calcium responses was not. Although AB-OSNs were found adjacent to Ho-OSNs, they had complete separate response profiles. AB-OSNs were sensitive to acetophenone (Ace) and benzaldehyde (Ben). In AB-OSNs, both acetophenone and benzaldehyde activated the PLC signaling pathway. Pharmacological characterization indicated that in AB-OSNs, P2X1 and P2Y2 receptors were present, which is different from that in Ho-OSNs. P2X and P2Y agonists modulated odorant responses in AB-OSNs. Purinergic signaling differentially regulated the various odorant responses in AB-OSNs. The acetophenoneevoked [Ca2+]i increases were negativly modulated through activation of the P2Y2 receptor, while the calcium response induced by benzaldehyde was modulated by P2X1 receptor activation. Collectively, these studies suggest that a complex signaling mechanism exists in OSNs, which has important implications for understanding the mechanism of information process in the olfactory system.
Ph.D. in Biology, July 2012
Show less

Title: Advances in Understanding Supersonic Jet Screech: Review and Perspective
Creator: Raman, G.
Date: 1998-02
Publisher: Pergamon - Elsevier Science Ltd
Description: Screech tones are produced by imperfectly expanded jets under certain conditions. This paper provides an overview of developments in the field...
Show moreScreech tones are produced by imperfectly expanded jets under certain conditions. This paper provides an overview of developments in the field of supersonic jet screech. The overview includes a historical background, summary of recent developments, and a critical assessment of our current understanding of screech. The subject material has been categorized as described in the table of contents given below. (C) 1998 Elsevier Science Ltd.
Show less

Title: NOVEL METHOD OF MANUFACTURING HYDROGEN STORAGE MATERIALS COMBINING WITH NUMERICAL ANALYSIS BASED ON DISCRETE ELEMENT METHOD
Creator: Xuzhe, Zhao
Date: 2015, 2015-07
Description: High efficiency hydrogen storage method is significant in development of fuel cell vehicle. Seeking for a high energy density material as the...
Show moreHigh efficiency hydrogen storage method is significant in development of fuel cell vehicle. Seeking for a high energy density material as the fuel becomes the key of wide spreading fuel cell vehicle. LiBH4 + MgH2 system is a strong candidate due to their high hydrogen storage density and the reaction between them is reversible. However, LiBH4 + MgH2 system usually requires the high temperature and hydrogen pressure for hydrogen release and uptake reaction. In order to reduce the requirements of this system, nanoengineering is the simple and efficient method to improve the thermodynamic properties and reduce kinetic barrier of reaction between LiBH4 and MgH2. Based on ab initio density functional theory (DFT) calculations, the previous study has indicated that the reaction between LiBH4 and MgH2 can take place at temperature near 200°C or below. However, the predictions have been shown to be inconsistent with many experiments. Therefore, it is the first time that our experiment using ball milling with aerosol spraying (BMAS) to prove the reaction between LiBH4 and MgH2 can happen during high energy ball milling at room temperature. Through this BMAS process we have found undoubtedly the formation of MgB2 and LiH during ball milling of MgH2 while aerosol spraying of the LiBH4/THF solution. Aerosol nanoparticles from LiBH4/THF solution leads to form Li2B12H12 during BMAS process. The Li2B12H12 formed then reacts with MgH2 in situ during ball milling to form MgB2 and LiH. Discrete element modeling (DEM) is a useful tool to describe operation of various ball milling processes. EDEM is software based on DEM to predict power consumption, liner and media wear and mill output. In order to further improve the milling efficiency of BMAS process, EDEM is conducted to make analysis for complicated ball milling process. Milling speed and ball’s filling ratio inside the canister as the variables are considered to determine the milling efficiency. The average and maximum speed of balls is critical to affect the collision force among balls. High collision force can be achieved by applying large torque on the milling shaft. The high milling speed and large ball’s filling ratio increase the torque and average speed of balls. However, the high average speed and large torque lead to non-uniformed milled material. Therefore, appropriate milling speed and ball’s filling ratio are ought to be selected to have better milled materials. The results of this study lead to the feasibility of LiBH4 + MgH2 system for reversible hydrogen storage application near ambient temperature. Applying appropriate ball’s filling ratio and milling speed can improve the milling efficiency of BMAS method.
M.S. in Material Science Engineering, July 2015
Show less

Title: The phase diagram of QCD from lattice simulations, Proceedings of the XLIII International Symposium on Multiparticle Dynamics
Creator: D'elia, Massimo
Date: 2013-09-15, 2013-09-15
Publisher: IIT Press
Description: Numerical simulations of Quantum Chromodynamics on a space-time lattice represent the best non-perturbative tool to explore the QCD phase...
Show moreNumerical simulations of Quantum Chromodynamics on a space-time lattice represent the best non-perturbative tool to explore the QCD phase diagram and the behavior of strong interactions under extreme conditions. We review the present status of the field and discuss some recent results.
Sponsorship: IIT College of Science, High Energy Physics Division of Argonne National Laboratory
Show less

Title: Magnetic Recorder with Pressure Shoe for Record Members
Creator: Camras, Marvin
Date: 1952-07-15
Description: Sponsorship: Armour Research Foundation of Illinois Institute of Technology
United States Patent
United States Patent

Title: Magnetic Transducer System and Method
Creator: Camras, Marvin
Date: 2010-01-26, 1972-08-22
Description: A magnetic transducer head having a coupling gap of controllable effective longitudinal dimension. In one embodiment a gap spacer of magnetic...
Show moreA magnetic transducer head having a coupling gap of controllable effective longitudinal dimension. In one embodiment a gap spacer of magnetic material is energized by bias current and/or signal current during recording while being deenergized during playback to provide a larger coupling gap for recording than for playback. Recording gap size may be controlled dynamically, or a very high frequency bias current such as 100 mhz may be supplied to the magnetic gap spacer. A magnetic head may have a zero gap dimension when the magnetic gap spacer is deenergized to prevent any substantial residual external field. An electro-magnetic transducer head with the electric circuit portion including a path through the electrically conductive magnetic corepiece at the transducer gap, thus concentrating the gap field and mininizing core losses at very high bias or signal frequencies.
Sponsorship: IIT Research Institute
United States Patent
Show less

Title: PAST- AND FUTURE- ORIENTED COGNITIONS IN PTSD: THE RELATIONSHIP BETWEEN RUMINATION AND WORRY IN DEPRESSION AND ANXIETY SYMPTOMS
Creator: Stickney, Laurie
Date: 2016, 2016-07
Description: Post-Traumatic Stress Disorder (PTSD) is a complex disorder characterized by symptoms of both anxiety and depression. Likewise, individuals...
Show morePost-Traumatic Stress Disorder (PTSD) is a complex disorder characterized by symptoms of both anxiety and depression. Likewise, individuals with PTSD experience Repetitive Negative Cognitions in the form of rumination and worry that may be focused on the past, present, or future. Although cognitions in individuals with PTSD have been studied, there is some question as to what types of cognitions individuals with PTSD generally experience and to what extent different types of cognitions contribute to different PTSD symptomatology. Further, although worry and rumination in PTSD have been studied, the question of the importance of the time-focus of cognitions in PTSD has not been adequately addressed. Time-focused cognitions and the relationships among depression, anxiety, rumination and worry were examined in this study using experience sampling method. Participants were asked to fill out a short survey measuring depression, anxiety, rumination, worry and time-focus five times per day for seven days. Results indicated that the presence of Current-focused cognitions strengthened the relationship between worry and anxiety compared to Future-focused cognitions. These findings suggest that in terms of the relationship between anxiety and worry, it is current-focus that is important not future-focus. Additionally, worry partially mediated the relationship between rumination and anxiety, and rumination partially mediated the relationship between worry and depression. Overall, the results suggest that time-focus may be important in some areas of PTSD, and the study highlights the complex relationships among depression, anxiety, rumination, worry and time-focused cognitions.
Ph.D. in Psychology, July 2016
Show less

Title: Continuous Antisolvent Crystallization Process and System Using Plug Flow Reactors
Creator: Myerson, Allan S., Alvarez, Alejandro
Date: 2012-07-12, 2012-07-10
Description: A process and system for continuous crystallization of a compound using antisolvent addition in which a solution is prepared with an organic...
Show moreA process and system for continuous crystallization of a compound using antisolvent addition in which a solution is prepared with an organic compound and a solvent. An antisolvent is added to the solution in a continuous plug flow system comprising at least one process module. The antisolvent can be added in multiple addition points such that the overall amount of antisolvent added to the continuous plug flow reactor remains fixed. The multiple addition point technique provides every process module with an equal volume of antisolvent. Finally, crystals are recovered from the slurry upon exiting the system. Preferably, the mean crystal size is less than 100 μm.
Sponsorship: Illinois Institute of Technology
United States Patent
Primary US Patent Classification 117/68
US Patent Classification 117/69
US Patent Classification 117/70
International Patent Classification C30B29/54
Show less

repository.iit

Search the repository

Pages

Pages

Enabled Filters

Refine Results

Type

Date

Academic status of creator

Department

Subject

Creator

Part of

Rights