gebhart/patrepeval huggingface dataset:
Intraoperative device targeting using real-time MRI (2011)

Real-time MRI has the potential to significantly improve intraoperative surgical processes. However, development of these technologies is complicated by the need for software tools that support task-oriented visualization of 2D and 3D datasets, enable flexible real-time image processing pathways, and interface with proprietary scanner hardware. Developing such tools requires substantial software engineering effort for these low-level tasks that distracts from a focus on developing and implementing algorithms that relate to the surgical technique in question. RTHawk and Vurtigo are extensible software platforms that simplify the development of tools for performing real-time MRI-guided procedures. We present here initial work on a system for performing intracerebral drug infusion under real-time MRI guidance using the Navigus pivot point-based MRI-compatible external trajectory guide. Initial testing performed using a GE scanner targeting a rigid object in a water-filled phantom allowed realtime aiming and infusion monitoring with 1 mm targeting accuracy. In vivo testing is forthcoming.
Enhanced stability of deuterium in silicon (1998)

Tight-binding molecular dynamics has been used to simulate vibrationally excited Si–H and Si–D modes. Simulations find that vibrationally excited Si–D bending modes decay much more rapidly than Si–H bending modes, resulting in SiD bonds having much higher stability than SiH bonds. This provides a viable mechanism for reduced degradation in deuterated metal–oxide–semiconductor transistors and deuterated amorphous silicon devices.
Control design of driver support system using multiple driver models (2004)

This paper proposes a control system design method concerned with a driver support system which assists driver's operation in an obstacle avoidance scene. In the procedure of the design method, multiple driver models regarding actual drivers are constructed by inverse models for vehicle dynamics. A controller of the support system is designed by model predictive control with constraint condition, in which a driver model for controller design is decided by switching the multiple models using vote form depending on an error signal between the actual driver and the driver model. By numerical experiments which simulate for avoiding the obstacle, it is shown that the proposed method has effect for a performance of avoidance task and switching to the driver model.
X2000 power system architecture (2002)

JPL is starting a new program that targets the exploration of the outer planets in our Solar System. The Advanced Deep Space System Development Program (ADSSDP) is to provide a spacecraft system for a series of missions exploring the outer planets. The first objective of the program is to provide an engineering model of the spacecraft system by the year 2000. The engineering model, dubbed the X2000, is basis for the first series of missions. The program will continue to advance the "state of the art" in spacecraft system development with a new engineering model every three years to benefit the missions that follow. The X2000 power system must answer the challenge of an outer planets spacecraft by reducing its power, mass and volume envelope. A power system architecture is required that can reduce the requirements on the spacecraft loads. The architecture can reduce the number of power converters on the spacecraft by providing load specific voltages and by increasing capability in de-coupling loads. The architecture also needs the modularity to accommodate multiple missions while maintaining a low recurring cost. Although the focus has been on shrinking the power system volume and mass, the efficiency and functionality cannot be ignored. Increased efficiency and functionality will only enhance the power systems capability to reduce spacecraft power requirements. The combination of the New Millennium packaging technology with the X2000 power system architecture produces a product capable of meeting a wide range of mission requirements with a low system recurring cost.
An Early American Smallpox Vaccine Based on Horsepox (2017)

Global eradication of smallpox was driven by the development of the smallpox vaccine. In this report, light is shed on the origins of the vaccinia virus.
Automatic algorithm for estimating the jet engine blade number from the radar target signature of aircraft targets (2015)

Radar is a powerful tool for detecting and tracking airborne targets by day and night. Nowadays, noncooperative target recognition (NCTR) is considered an important subject. NCTR means technologies provide high-resolution target signatures and use them to make some decisions about the type of target that has been detected. Clearly, this function is performed with no cooperation from the target concerned, and it may even not be aware that its signature is being measured for recognition purposes [1]. Jet engine modulation (JEM) [2]-[4] generated by the engine rotation in an aircraft has been used for radar-based NCTR purposes, along with high-resolution range profile and inverse synthetic aperture radar (ISAR) [5]-[7]. Recognition by JEM uses micro-Doppler features induced by a rotating jet engine compressor. The micro-Doppler is characterized by a time-dependent Doppler shift that is different from that caused by the target bulk motion.
Prognosis of remaining useful life for complex engineering systems (2006)

There has been a growing interest in extending conventional maintenance strategies, such as corrective and predictive maintenance, towards the implementations that would allow forecasting of system degradation through a prognostic procedure. The recent progress in sensor and computer technologies employed in complex engineering systems facilitates the integration of model-based and data-driven diagnostics and prognostics leading to condition-based maintenance and extended availability of equipment. This paper describes data-driven models and methods aimed at performing the tasks constituting the diagnostic/prognostic framework. The proposed models and methods allow performing Prognostic and Health Management (PHM) routines over a fleet of equipment populating complex engineering systems. Although several approaches to PHM implementation have been categorized in recently published literature, this paper focuses on PHM techniques associated with observing features related to anomalous system behavior. Observed anomalous patterns in the system behavior are considered to be precursors of impending failures. Measurements taken on the observed deviations are used to deduce a quantitative estimate of how long the system will stay within its specification-defined operational ranges. (authors)
A Symmetrical All-Dielectric Interference Filter* (1952)

By replacing the silver layers in the conventional interference filter with seven dielectric layers having alternately high and low indices, it has been possible to obtain a filter having an 80-percent peak transmission and 65A half-width for a first-order transmission band centered at 5200A. The properties of the filter are determined from the theory of the parallel-plate interferometer.
Studies on transfer of varicella-zoster-virus specific T-cell immunity from bone marrow donor to recipient (1990)

The transfer of antigen-specific cellular immunity in human bone marrow transplantation (BMT) was studied in 49 donor-recipient pairs, using a varicella-zoster-virus (VZV) specific lymphoproliferative response (LPR) assay. Posttransplant VZV-LPR could be serially measured in 31 long-term surviving recipients. VZV-specific T-cell immunity was detected in the early posttransplant period in 4 of 16 recipients who were, and whose donors were, immune to VZV before BMT, but two of those positive responses diminished in the first 100 days posttransplant. No positive response was detected in the immediate posttransplant period when either only the recipient or the donor was immune to VZV pretransplant. Herpes zoster or chickenpox developed in the recipients depending on a history of pretransplant VZV infection when the VZV-LPR became negative, and recovery from VZV infection was always followed by quick conversion of VZV-LPR. Long-lasting positive VZV-LPR was observed in the two recipients who experienced VZV infection in the immediate pretransplant period and received marrow graft from an immune donor. Our results indicate that a simple or direct transfer of VZV-specific cellular immunity from a marrow donor to a recipient cannot be expected in usual clinical bone marrow transplantation and that there might be a collaboration or recruitment of immune responses involving both donor and recipient that permits the VZV-LPR to remain positive posttransplant.
Social services delivery through community-based projects (2001)

The World Bank is financing an increasing number of community-based social services projects. The objective of this paper is to review and categorize the extent, scope and mechanisms of these projects in the current Bank portfolio, and to identify good practices and potential pitfalls. The authors identify 99 projects that finance at least $1.6 billion in social services. While most of the projects surveyed deliver"traditional"services such as nutrition, maternal and child care, and literacy, the scope of many projects has expanded to include newer services such as counseling, home-based care for the elderly and disabled, and early childhood development.
Influence of altered thyroid and nutritional states on early histogenesis of the rat cerebellar cortex with special reference to synaptogenesis (1982)

On day of birth, the synaptic density of the rat cerebellar cortex in experimental, as compared to control, rats was slightly reduced or increased, respectively, after propylthiouracil treatment of the dam or thyroxine injection of the fetus. The stimulation of synaptogenesis in thyroxine-treated neonates was particularly obvious at the level of the ganglionic layer containing Purkinje cell bodies and was accompanied at the same level by accelerated growth of the presynaptic endings and perisomatic processes of the Purkinje cells. Undernourishment of the dam from day 6 of gestation led to an unexpected stimulation of synaptogenesis in the cerebellar cortex of the neonates; synaptic density was significantly increased above the normal value and much more markedly than in the thyroxine-treated neonates, but there was no abnormal proliferation of the neuronal processes. Different mechanisms underlay the transient stimulation of synaptogenesis in these two conditions. These results have been related to the disturbances in the development of Bergmann glia previously found soon after birth in altered thyroid and nutritional states.
Automatic Image Registration in Infrared-Visible Videos using Polygon Vertices (2014)

In this paper, an automatic method is proposed to perform image registration in visible and infrared pair of video sequences for multiple targets. In multimodal image analysis like image fusion systems, color and IR sensors are placed close to each other and capture a same scene simultaneously, but the videos are not properly aligned by default because of different fields of view, image capturing information, working principle and other camera specifications. Because the scenes are usually not planar, alignment needs to be performed continuously by extracting relevant common information. In this paper, we approximate the shape of the targets by polygons and use affine transformation for aligning the two video sequences. After background subtraction, keypoints on the contour of the foreground blobs are detected using DCE (Discrete Curve Evolution)technique. These keypoints are then described by the local shape at each point of the obtained polygon. The keypoints are matched based on the convexity of polygon's vertices and Euclidean distance between them. Only good matches for each local shape polygon in a frame, are kept. To achieve a global affine transformation that maximises the overlapping of infrared and visible foreground pixels, the matched keypoints of each local shape polygon are stored temporally in a buffer for a few number of frames. The matrix is evaluated at each frame using the temporal buffer and the best matrix is selected, based on an overlapping ratio criterion. Our experimental results demonstrate that this method can provide highly accurate registered images and that we outperform a previous related method.
Human Stem Cell Manual : A Laboratory Guide 2nd edition Ed. 2 (2012)

This manual is a comprehensive compilation of that work for deriving, characterizing, and differentiating hPSCs, written by the researchers who developed and tested the methods and use them every day in their laboratories. The manual is much more than a collection of recipes; it is intended to spark the interest of scientists in areas of stem cell biology that they may not have considered to be important to their work.  The second edition of the Human Stem Cell Manual is an extraordinary laboratory guide for both experienced stem cell researchers and those just beginning to use stem cells in their work.

	
		Offers a comprehensive guide for medical and biology researchers who want to use stem cells for basic research, disease modeling, drug development, and cell therapy applications.
	
		Provides a cohesive global view of the current state of stem cell research, with chapters written by pioneering stem cell researchers in Asia, Europe, and North America.
	
		Includes new chapters devoted to recently developed methods, such as iPSC technology, written by the scientists who made these breakthroughs.
Functional dyspepsia (2004)

For the time being, diagnostic strategies for patients with suspected functional dyspepsia continue to be directed at excluding other disorders, in particular peptic ulcer disease and gastroesophageal reflux disease. In the presence of reflux symptoms, acid inhibitory therapy, preferably with a proton pump inhibitor, is a rational choice; otherwise, therapy is still empirical. Hypnotherapy is an option that could be seriously considered.
A New-Generation Continuous Glucose Monitoring System: Improved Accuracy and Reliability Compared with a Previous-Generation System (2013)

The performance of DG4P was significantly improved compared with that of DSP, which may increase routine clinical use of CGM and improve patient outcomes.
Polyethylene Glycol Reactive Antibodies in Man: Titer Distribution in Allergic Patients Treated with Monomethoxy Polyethylene Glycol Modified Allergens or Placebo, and in Healthy Blood Donors (1984)

Antibodies to polyethylene glycol (PEG) were analyzed in patients with various allergies and in healthy blood donors employing passive hemagglutination. In untreated allergic patients and in healthy blood donors, naturally occurring anti-PEG antibody titers between 32 and 512 were seen in 3.3 and 0.2%, respectively. During hyposensitization with monomethoxy polyethylene glycol modified ragweed extract and honey bee venom, respectively, the patients showed an anti-PEG antibody response. Titers of 32-512 were found in 50% of the patients directly after the first treatment course. After 2 years of treatment the percentage of patients with such titers declined to 28.5%. Mercaptoethanol treatment of sera indicated that the anti-PEG antibodies predominantly were of the IgM isotype. The weak IgM response found in treated patients is considered to be of no clinical significance.
<title>Progress at the Vatican Advanced Technology Telescope</title> (1997)

The Vatican Advanced Technology Telescope incorporates a fast (f/1.0) borosilicate honeycomb primary mirror and an f/0.9 secondary in an aplanatic Gregorian optical configuration. We provide a brief technical and performance overview by describing the optical layout, the primary and secondary mirror systems, and the telescope drive and control system. Results from a high resolution wavefront sensor and a current wide-field image taken at the f/9 focus demonstrates the overall fine performance of the telescope.
Comparison of Unet architectures for segmentation of the left ventricle endocardial border on two-dimensional ultrasound images (2019)

In this paper, we compare common Unet architectures with upgrade version Unet++ for segmentation of the the left ventricular (LV) endocardial boundaries on ultrasound images, which were obtained by ultrasound studies of the heart. The key difference of Unet++ from Unet is the improved skip connections between encoder and decoder by adding convolution blocks. Such implementation allows us to transfer information from encoder to decoder with avoiding to loss of small details of the ultrasound image. It is very important to detect internal boundaries accuratly. We evaluated Unet++ in comparison Unet and wide Unet. The Dice coefficient for the LV segmentation with Unet++ is 91.20%. This result of Unet++ for the LV area segmentation outperforms Unet and wide Unet architectures.
Enhancing Nitrite Reductase Activity of Modified Hemoglobin: Bis-tetramers and Their PEGylated Derivatives (2009)

The clinical evaluation of stabilized tetrameric hemoglobin as alternatives to red cells revealed that the materials caused significant increases in blood pressure and related problems and this was attributed to the scavenging of nitric oxide and extravasation. The search for materials with reduced vasoactivity led to the report that conjugates of hemoglobin tetramers and polyethylene glycol (PEG) chains did not elicit these pressor effects. However, this material does not deliver oxygen efficiently due to its lack of cooperativity and high oxygen affinity, making it unsuitable as an oxygen carrier. It has been recently reported that PEG-conjugated hemoglobin converts nitrite to nitric oxide at a faster rate than does the native protein, which may compensate for the scavenging of nitric oxide. It is therefore important to alter hemoglobin in order to enhance nitrite reductase activity while retaining its ability to deliver oxygen. If the beneficial effect of PEG is associated with the increased size reducing extravasation, this can also be achieved by coupling cross-linked tetramers to one another, giving materials with appropriate oxygen affinity and cooperativity for use as circulating oxygen carriers. In the present study it is shown that cross-linked bis-tetramers with good oxygen delivery potential have enhanced nitrite reductase activity with k(obs) = 0.70 M(-1) s(-1) (24 degrees C), compared to native protein and cross-linked tetramers, k(obs) = 0.25 M(-1) s(-1) and k(obs) = 0.52 M(-1) s(-1), respectively, but are less active in reduction of nitrite than Hb-PEG5K(2) (k(obs) = 2.5 M(-1) s(-1)). However, conjugation of four PEG chains to the bis-tetramer (at each beta-Cys-93) produces a material with greatly increased nitrite reductase activity (k(obs) = 1.8 M(-1) s(-1)) while retaining cooperativity (P(50) = 4.1, n(50) = 2.4). Thus, PEGylated bis-tetramers combine increased size and enhanced nitrite reductase activity expected for decreased vasoactivity with characteristics of an acceptable HBOC.
Calibrating Automated Event Detection Algorithms for Real-Time Wellbore Stability Applications (2013)

Abstract Improvement and automation of real-time drilling operations obtained significant attention during the last few years, aiming to substantially reduce non-productive time and increase safety. Wellbore instability is one of the operational challenges that can be mitigated by proactive analysis and interpretation of logging-while-drilling (LWD) and measurements-while-drilling (MWD) data. That data can be used to detect events such as kicks or losses as potential drilling complications. Successful implementation of supportive automated systems requires proper management of generated alarms to deliver reliable results. Minimization of false alarms and the classification of alarms according to their severity are necessary to provide a capable system. Following an introduction into drilling automation and wellbore stability analysis, this paper presents different approaches for the automatic analysis and interpretation of formation evaluation logs for the detection of drilling events. These algorithms were extensively tested on more than 30 data sets. The approaches are beneficial for monitoring the wellbore conditions and to alerting workers about potential overpressure regions and breakouts in the formation around the borehole. Test observations were used for developing an automated alarm and advice generation system. Alarm generation experience from within other communities and its comparison to the oil and gas industry is highlighted. Automated algorithm and alarm generation test results provide insight into the possibilities and limitations currently encountered in the application of LWD / MWD logs for the automated detection of drilling challenges. Testing has proven to be essential for identifying operating constraints that must be addressed to minimize erroneous alerts.
HYDROXYAPATITE COATING OF THREADED PINS ENHANCES FIXATION (1997)

We measured the insertion and extraction torque forces in a randomised study of 76 external fixation screws in 19 patients treated by hemicallotasis for osteoarthritis of the medial side of the knee. The patients were randomised to have either standard tapered screws (Orthofix 6/5 mm) or the same screws with hydroxyapatite (HA) coating. One patient had two standard and two HA-coated screws. All patients had an anterior external fixator (Orthofix T-garche), with two screws in the proximal tibial metaphysis parallel to and about 2 cm below the joint surface and two in the tibial diaphysis. The mean torque forces for insertion of the standard screws were 260 Ncm for the proximal to medial screw, 208 for the proximal to lateral screw and 498 and 546 Ncm for the diaphyseal pins. The corresponding forces for the HA-coated pins were not significantly different. The torque forces for the extraction of the standard pins were 2 Ncm for the proximal pins, 277 and 249 Ncm for the distal pins and 482, 478, 585 and 620 Ncm, respectively (p < 0.005) for the HA-coated pins. All 18 of the metaphyseal standard screws were loose at extraction (extraction force < 20 Ncm), but only one of the HA screws in the metaphysis was loose. In the diaphysis the standard screws lost about 40% of their fixation in contrast to the HA-coated screws which retained full fixation strength.
D.W. - Phillips record covers (1972)

various record covers, taken 1972 by K E Niven and Co, commercial photographers 
Other -Envelope contains: 364/72, D.W.Philips record covers, Description from negative envelope. 
Source of title - Title supplied by library 
Quantity: 1 b&w original negative(s). 
Physical Description: Cellulosic film negative
Editors' Introduction (2001)

Other| October 01 2001 Editors' Introduction Jennifer L. Holberg; Jennifer L. Holberg Search for other works by this author on: This Site Google Marcy Taylor Marcy Taylor Search for other works by this author on: This Site Google Pedagogy (2001) 1 (3): 445–448. https://doi.org/10.1215/15314200-1-3-445 Cite Icon Cite Share Icon Share Twitter Permissions Search Site Citation Jennifer L. Holberg, Marcy Taylor; Editors' Introduction. Pedagogy 1 October 2001; 1 (3): 445–448. doi: https://doi.org/10.1215/15314200-1-3-445 Download citation file: Zotero Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search Books & JournalsAll JournalsPedagogy Search Advanced Search The text of this article is only available as a PDF. © 2001 Duke University Press2001 Article PDF first page preview Close Modal You do not currently have access to this content.
ChemInform Abstract: Formation of Silicide Thin Films by Solid State Reaction (1994)

Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.