gebhart/patrepeval huggingface dataset:
DistancePPG: Robust non-contact vital signs monitoring using a camera (2015)

Vital signs such as pulse rate and breathing rate are currently measured using contact probes. But, non-contact methods for measuring vital signs are desirable both in hospital settings (e.g. in NICU) and for ubiquitous in-situ health tracking (e.g. on mobile phone and computers with webcams). Recently, camera-based non-contact vital sign monitoring have been shown to be feasible. However, camera-based vital sign monitoring is challenging for people with darker skin tone, under low lighting conditions, and/or during movement of an individual in front of the camera. In this paper, we propose distancePPG, a new camera-based vital sign estimation algorithm which addresses these challenges. DistancePPG proposes a new method of combining skin-color change signals from different tracked regions of the face using a weighted average, where the weights depend on the blood perfusion and incident light intensity in the region, to improve the signal-to-noise ratio (SNR) of camera-based estimate. One of our key contributions is a new automatic method for determining the weights based only on the video recording of the subject. The gains in SNR of camera-based PPG estimated using distancePPG translate into reduction of the error in vital sign estimation, and thus expand the scope of camera-based vital sign monitoring to potentially challenging scenarios. Further, a dataset will be released, comprising of synchronized video recordings of face and pulse oximeter based ground truth recordings from the earlobe for people with different skin tones, under different lighting conditions and for various motion scenarios.
The Effects of Gloves on the Performance of a Tactile Perception Task and Precision Grasping (1999)

Abstract The effect that gloving has on the performance of perceptual and manipulation tasks was studied in this paper. To test perceptual ability, subjects were timed as they detected hard lumps in soft rubber models. Palpation of four different lumps, diameters 3.2 mm, 4.8 mm, 6.4 mm and 7.9 mm, was performed while barehanded and while wearing gloves of thickness 0.32 mm, 0.64 mm, 0.95 mm, 1.27 mm, 1.59 mm and 1.91 mm. Analysis of the data yielded significant differences in lump detection time with glove thickness. Mean times were always best with bare hands and poorest with 1.91 mm glove thickness. Detection time variation was greatest for the 3.2 mm lump. The maximum force applied during palpation increased linearly with glove thickness. To test manipulation ability, seven subjects lifted a 460g object using the thumb and index finger while barehanded and wearing gloves of thickness 0.16 mm, 0.32 mm, 0.95 mm and 1.91 mm. Three different surfaces with varying frictional conditions were used on the object: sandpaper, suede and rayon. Results indicated that the subjects’ ability to adapt to new surfaces decreased with increasing glove thickness, and greater levels of excess grip force were applied. Visual feedback did not play an important role in assisting lift for any glove thickness. The results of the perceptual and manipulation tasks suggest that the effects of gloving are both thickness dependent and highly task sensitive.
The influence of pipe scaling parameters on the sound of flue organ pipes (2004)

When basic phenomena of the physics of flue organ pipes is studied, experiments on models are acceptable. But these models often differ considerably from real organ pipes. For this reason the fine details of pipe sounds should be investigated on real pipes. The sound quality of an organ pipe is mainly influenced by the attack transients. This onset is first dominated by the edge tone, while later the pipe resonator will play a more important role. To understand the physics of a flue organ pipe it is necessary to measure the acoustic properties of the pipe resonator to analyze the edge tone, the attack transient, and the stationary sound of the pipe. Several special pipes with the same pitch have been investigated: pipes with different diameters; a pipe of which the cut up and a pipe of which the length is adjustable. By the evaluation all physical effects contributing to the production of sound were taken into account. The results together with the results of subjective listening tests will be used for developing a scaling method for dimensioning labial organ pipes and a software for designing organ pipe dimensions of the most important ranks. [Work supported by the European Commission.]
Computer assisted diagnosis method of whole body cancer using FDG-PET images (2004)

FDG is known as a tracer which can be accumulated in the brain, the cardiac muscle and the carcinoma tissue. Recently, FDG-PET became use in cancer diagnosis. The advantageous point of FDG-PET is that it can get a whole body images by one time of measurement, and there are a more few quantities of dose than the other conventional CT equipments. However, there are many doubtful shadow on a FDG-PET image because of the organs whose FDG accumulation are high. By this reason, cancer diagnosis with the FDG-PET is very difficult. In this paper, we propose an computer assisted diagnosis method of whole body cancer with the FDG-PET image. This procedure is as follows. At first, we divide FDG-PET images into some regions on the basis of state of intensity level ups and downs. On this account we calculate Gauss curvature and mean curvature of a FDG-PET image. Second, we extract the positive Gauss curvature and the negative mean curvature as the cancer candidate. The last, we compare the cancer candidate with the diagnosis criteria we defined, and we look for the doubtful cancer regions. This technique is still early stage, but we show the availability of this procedure by comparing with the doctor's diagnosis results.
Laboratory bridges. II: A high voltage Schering-Wheatstone bridge (1950)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTLaboratory bridges. II: A high voltage Schering-Wheatstone bridgeDavid Edelson , William N. Maclay , and Raymond M. Fuoss Cite this: J. Chem. Educ. 1950, 27, 12, 644Publication Date (Print):December 1, 1950Publication History Received3 August 2009Published online1 December 1950Published inissue 1 December 1950https://doi.org/10.1021/ed027p644RIGHTS & PERMISSIONSArticle Views67Altmetric-Citations-LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InReddit PDF (4 MB) Get e-Alerts Get e-Alerts
Carbon‐13 NMR spectra of saturated heterocycles: XI—Tetrahydropyrans (oxanes) (1983)

Abstract The 13 C NMR spectra of 62 oxanes (tetrahydropyrans) with and without methyl substituents at various ring positions, some of them bearing in addition (or instead) ethyl, vinyl, ethynyl, carbomethoxy and methylol substituents at C‐2, have been recorded, and the 294 resulting chemical shifts have been correlated by multiple linear regression analysis. Axial and equatorial α‐, β‐, γ‐, δ‐, gem ‐ and vic ‐parameters for shifts caused by methyl groups at all ring positions, and similar parameters for Et,—CHCH 2 ,—CCH, CO 2 Me and CH 2 OH groups at C‐2, are reported. Standard deviations of the parameters are, in most cases, within 0.3 ppm and the agreement of calculated and experimental shifts is excellent. This is probably the largest parameter set of this type extant. 13 C NMR spectra of a number of additional substituted tetrahydropyrans, and of 3,6‐dihydro‐2 H ‐pyrans and 3,4‐dihydro‐2 H ‐pyrans, are tabulated and discussed.
Electrosynthesis of Sodium Hydrosulfite: III. Porous Cathode Materials and Process Model (1998)

The electrolytic manufacture of sodium hydrosulfite is affected by feedstock composition, electrode morphology, and electrode material. Here we show that porous graphite cathodes can provide the highest one‐pass conversion of sodium bisulfite to hydrosulfite, without contamination by sodium thiosulfate. For example, at current densities up to 0.90 kA/m2, thiosulfate‐free hydrosulfite can be produced at 66% current efficiency. At higher current densities, both hydrogen and thiosulfate are produced. In acetate‐buffered bisulfite, these rise to 1.35 kA/m2 at nearly 100% current efficiency. In unbuffered bisulfite feedstocks, variations in product quality depend solely on cathode composition. That is, the electrode kinetics for each of the reductions are a strong function of the electrode material. However, we show that the rate of bisulfite consumption is controlled by diffusional mass transfer in the porous electrode and can be predicted through use of a simple packed‐bed, plug‐flow reactor model.
Microwave Material Applications: Device Miniaturization and Integration (2016)

This comprehensive new resource based on the classic Artech House title, Microwave Materials for Wireless Applications, introduces the use of new microwave materials for passive devices including ferrites, magnetization garnets, dielectric materials, and absorbers for wireless and antenna applications. This book explores a new set of magnetic and dielectric materials that assist with size reduction of passive devices such as ferrite isolators and circulators. Revised data on the applications of absorbers, including examples of different combinations of magnetic, dielectric, and absorber materials into integrated devices is presented. Meta-materials for antennas and potential antenna integration onto soft boards or LTCC filter technologies using tunable devices with new materials are covered. Professionals learn how new material designs use properties of certain ions in oxide compounds to reduce their physical size, including in cellular base stations designed for 4G and 5G cell phone communication systems. This book exhibits how the integration of new materials into cellular systems using common transmission lines will further save size and reduce complexity. New technologies are presented demonstrating the use of sol-gel processing and ceramic processing in the use of low temperature co-fired ceramics, plastic molding, and 3D printing demonstrating improved device designs.
Association between G72/30 haplotypes and bipolar disorder in a Swedish sample (2008)

Genetic studies have implicated the evolutionary novel, primates-specific gene locus G72/G30 in schizophrenia, bipolar and panic disorders. It encodes for a protein LG72 whose function has been controversially discussed as putative regulator of the peroxisomal enzyme D-amino-acid-oxidase (DAO), or as a mitochondrial protein, which promotes robust mitochondrial fragmentation in mammalian cell lines including human and rat primary neurons. Because of this conserved function we here have generated "humanized" BAC transgenic mice (G72Tg) expressing alternatively spliced G72 and G30 transcripts, and the LG72 protein. G72 expression is prominent in granular cells of the cerebellum, the hippocampus, the cortex and the olfactory bulb. Most strikingly, G72Tg mice displayed deficits in sensorimotor gating which could be reversed with haloperidol, increased sensitivity to PCP, motor-coordination deficits, increased compulsive behaviors and deficits in smell identification. These results demonstrate that expression of the human G72/G30 gene locus in mice produces behavioral phenotypes that are relevant to psychiatric disorders.
Comparison of reduced order lithium-ion battery models for control applications (2009)

Lithium-ion batteries are the core of new plug-in hybrid-electrical vehicles (PHEV) as well as considered in many 2nd generation hybrid electric vehicles (HEV). In most cases the lithium-ion battery performances play an important role in the vehicle energy management. As consequence, battery modeling is one of the most important tasks for hybrid and electrical vehicles control. Full order electrochemical models have to be simplified in order to make them compatible with estimation algorithms embedded in a real-time on-board electronic control unit. The battery model simplification has to be carried out accurately in order to achieve maximum computational cost reduction while ensuring the best model performance and reaching an efficient system management. In this paper two different reduced order models, based on the electrochemical laws, are compared both with simulation results and with experimental data collected from a 10 Ah lithium-ion battery. The reduced order models characteristics are analyzed and compared in relation to the specific control objective.
Fusarium proliferatum Soft Tissue Infection at the Site of a Puncture by a Plant: Recovery, Isolation, and Direct Molecular Identification (2009)

After allogeneic stem cell transplantation, a 49-year-old man developed fever and inflammation at the site of a plant puncture on a finger. A hyalohyphomycete was recovered by incubating the plant spine fragment following surgery. Amplification of the internal transcribed spacer region and 5.8S rRNA, beta-tubulin, and translation elongation factor coding genes identified Fusarium proliferatum, which was confirmed later by culture.
Phosphodiesterase sequence variants may predispose to prostate cancer (2015)

We hypothesized that mutations that inactivate phosphodiesterase (PDE) activity and lead to increased cAMP and cyclic guanosine monophosphate levels may be associated with prostate cancer (PCa). We sequenced the entire PDE coding sequences in the DNA of 16 biopsy samples from PCa patients. Novel mutations were confirmed in the somatic or germline state by Sanger sequencing. Data were then compared to the 1000 Genome Project. PDE, CREB and pCREB protein expression was also studied in all samples, in both normal and abnormal tissue, by immunofluorescence. We identified three previously described PDE sequence variants that were significantly more frequent in PCa. Four novel sequence variations, one each in the PDE4B,PDE6C, PDE7B and PDE10A genes, respectively, were also found in the PCa samples. Interestingly, PDE10A and PDE4B novel variants that were present in 19 and 6% of the patients were found in the tumor tissue only. In patients carrying PDE defects, there was pCREB accumulation (P<0.001), and an increase of the pCREB:CREB ratio (patients 0.97±0.03; controls 0.52±0.03; P-value <0.001) by immunohistochemical analysis. We conclude that PDE sequence variants may play a role in the predisposition and/or progression to PCa at the germline and/or somatic state respectively.
Characteristics of Immune Memory and Effector Activity to Cancer-Expressed MHC Class I Phosphopeptides Differ in Healthy Donors and Ovarian Cancer Patients (2021)

Elevated immunity to cancer-expressed antigens can be detected in people with no history of cancer and may contribute to cancer prevention. We have previously reported that MHC-restricted phosphopeptides are cancer-expressed antigens and targets of immune recognition. However, the extent to which this immunity reflects prior or ongoing phosphopeptide exposures was not investigated. In this study, we found that preexisting immune memory to cancer-expressed phosphopeptides was evident in most healthy donors, but the breadth among donors was highly variable. Although three phosphopeptides were recognized by most donors, suggesting exposures to common microbial/infectious agents, most of the 205 tested phosphopeptides were not recognized by peripheral blood mononuclear cells (PBMC) from any donor and the remainder were recognized by only 1 to 3 donors. In longitudinal analyses of 2 donors, effector immune response profiles suggested active reexposures to a subset of phosphopeptides. These findings suggest that the immunogens generating most phosphopeptide-specific immune memory are rare infectious agents or incipient cancer cells with distinct phosphoproteome dysregulations, and that repetitive immunogenic exposures occur in individual donors. Phosphopeptide-specific immunity in PBMCs and tumor-infiltrating lymphocytes from ovarian cancer patients was limited, regardless of whether the phosphopeptide was expressed on the tumor. However, 4 of 10 patients responded to 1 to 2 immunodominant phosphopeptides, and 1 showed an elevated effector response to a tumor-expressed phosphopeptide. As the tumors from these patients displayed many phosphopeptides, these data are consistent with lack of prior exposure or impaired ability to respond to some phosphopeptides and suggest that enhancing phosphopeptide-specific T-cell responses could be a useful approach to improve tumor immunotherapy.
ChemInform Abstract: New Diazadi(and tri)thia‐21‐crown‐7 Ethers Containing 8‐Hydroxyquinoline Side Arms (2002)

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.
Stop-and-Go Movements of Plant Golgi Stacks Are Mediated by the Acto-Myosin System (1999)

The Golgi apparatus in plant cells consists of a large number of independent Golgi stack/trans-Golgi network/Golgi matrix units that appear to be randomly distributed throughout the cytoplasm. To study the dynamic behavior of these Golgi units in living plant cells, we have cloned a cDNA from soybean (Glycine max), GmMan1, encoding the resident Golgi protein alpha-1,2 mannosidase I. The predicted protein of approximately 65 kD shows similarity of general structure and sequence (45% identity) to class I animal and fungal alpha-1,2 mannosidases. Expression of a GmMan1::green fluorescent protein fusion construct in tobacco (Nicotiana tabacum) Bright Yellow 2 suspension-cultured cells revealed the presence of several hundred to thousands of fluorescent spots. Immuno-electron microscopy demonstrates that these spots correspond to individual Golgi stacks and that the fusion protein is largely confined to the cis-side of the stacks. In living cells, the stacks carry out stop-and-go movements, oscillating rapidly between directed movement and random "wiggling." Directed movement (maximal velocity 4.2 microm/s) is related to cytoplasmic streaming, occurs along straight trajectories, and is dependent upon intact actin microfilaments and myosin motors, since treatment with cytochalasin D or butanedione monoxime blocks the streaming motion. In contrast, microtubule-disrupting drugs appear to have a small but reproducible stimulatory effect on streaming behavior. We present a model that postulates that the stop-and-go motion of Golgi-trans-Golgi network units is regulated by "stop signals" produced by endoplasmic reticulum export sites and locally expanding cell wall domains to optimize endoplasmic reticulum to Golgi and Golgi to cell wall trafficking.
Ultrahigh photoconductivity of bandgap-graded CdSxSe1−x nanowires probed by terahertz spectroscopy (2016)

Superiorly high photoconductivity is desirable in optoelectronic materials and devices for information transmission and processing. Achieving high photoconductivity via bandgap engineering in a bandgap-graded semiconductor nanowire has been proposed as a potential strategy. In this work, we report the ultrahigh photoconductivity of bandgap-graded CdSxSe1-x nanowires and its detailed analysis by means of ultrafast optical-pump terahertz-probe (OPTP) spectroscopy. The recombination rates and carrier mobility are quantitatively obtained via investigation of the transient carrier dynamics in the nanowires. By analysis of the terahertz (THz) spectra, we obtain an insight into the bandgap gradient and band alignment to carrier transport along the nanowires. The demonstration of the ultrahigh photoconductivity makes bandgap-graded CdSxSe1-x nanowires a promising candidate as building blocks for nanoscale electronic and photonic devices.
Infections in hairy-cell leukemia (1978)

In order to determine the nature of infectious complications in hairy-cell leukemia we studied 20 consecutive patients seen at UCLA and analyzed the available literature. The incidence of serious infection in our series was 40%, and pneumonia and septicemia due to Pseudomonas and E. coli organisms were the leading types of infections. Fungal infections with Cryptococci and Histoplasma organisms were documented, and a single case of Pneumocystis carinii pneumonia was observed. Noninfectious fever occurred in 30% of our patients. There was a clear relationship between fungal disease and corticosteroid therapy, and the overall incidence of infection was correlated with the degree of neutropenia and corticosteroid treatment. No relationship was found between age, duration of disease, or the use of cytotoxic chemotherapy and infectious complications. Of the 13 infectious episodes, 11 occurred in patients prior to splenectomy. Only two episodes were seen in splenectomized patients, both occurring in the immediate postoperative period. We conclude that splenectomy has a beneficial effect in reducing the incidence of infections in hairy-cell leukemia and that corticosteroids should be used cautiously, since they predispose to opportunistic infection in this disease.
Micro Motion Parallel Mechanism Using the Under Singularity (2003)

機構の劣可動特異点近傍では出力運動が縮小するため, 多自由度微小運動機構になると考えられる。本報は, 微細作業装置の開発を目的にして, ヤコビ行列に基づき具体化したパラレルメカニズム型の微小運動機構を提案する。
Airborne rotary separator study (1992)

Several air breathing propulsion concepts for future earth-to-orbit transport vehicles utilize air collection and enrichment, and subsequent storage of liquid oxygen for later use in the vehicle mission. Work performed during the 1960's established the feasibility of substantially reducing weight and volume of a distillation type air separator system by operating the distillation elements in high 'g' fields obtained by rotating the separator assembly. The purpose of this study was to evaluate various fuels and fuel combinations with the objective of minimizing the weight and increase the ready alert capability of the plane. Fuels will be used to provide energy as well as act as heat sinks for the on-board heat rejection system. Fuel energy was used to provide power for air separation as well as to produce refrigeration for liquefaction of oxygen enriched air, besides its primary purpose of vehicle propulsion. The heat generated in the cycle was rejected to the fuel and water which is also carried on board the vehicle.The fuels that were evaluated include JP4, methane, and hydrogen. Hydrogen served as a comparison to the JP4 and methane cases.