gebhart/patrepeval huggingface dataset:
pK1' and bicarbonate concentration in plasma. (1987)

Values for pK1' were determined from pH measured at 37 degrees C with three blood-gas analyzers and from calculated pco2 values in 443 freshly separated plasmas, tonometered at 37 degrees C. Plasma was taken from healthy volunteers, seriously ill patients, and hyponatremic patients. pK1' values varied by considerably more than 0.06 in healthy volunteers as well as in very ill patients, and bicarbonate concentrations ([HCO3]p) calculated by blood-gas analyzers based on the pK1' value of 6.1 could be in error by some +/- 60%. pK1' was similarly determined for tonometered (37 degrees C) replicate dilutions of plasma samples. By adding weighed amounts of dry NaCl and NaHCO3 to the diluted samples we increased the Na+ concentration to approximately 150 mmol/L and bicarbonate concentrations to values ranging from approximately 2.5 to approximately 52.5 mmol/L. pK1' values decreased when [HCO3]p was increased in dilutions of plasma kept at constant ionic strength. At any given [HCO3]p, pK1' values were higher at high than at low values of pco2.
Light-Scattering Studies of a Polystyrene-Poly(methyl methacrylate) Two-Block Copolymer in Dilute Solutions (1974)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTLight-Scattering Studies of a Polystyrene-Poly(methyl methacrylate) Two-Block Copolymer in Dilute SolutionsHiroyasu Utiyama, Kunihiro Takenaka, Motoo Mizumori, and Mitsutoshi FukudaCite this: Macromolecules 1974, 7, 1, 28–34Publication Date (Print):January 1, 1974Publication History Published online1 May 2002Published inissue 1 January 1974https://doi.org/10.1021/ma60037a006RIGHTS & PERMISSIONSArticle Views129Altmetric-Citations15LEARN 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 (804 KB) Get e-Alerts Get e-Alerts
The existence of infinitely many solutions for nonlinear elliptic equations involving p-Laplace type operators in R^N (2017)

We are concerned with the following nonlinear elliptic equations \[-div(\varphi(x,\nabla u))+b(x)|u|^{p-2}u=\lambda f(x,u) \qquad \texttt{in} \qquad\mathbb{R}^N, \] where the function \(\varphi(x,v)\) is of type \(|v|^{p-2}v, b:\mathbb{R}^N\rightarrow (0,\infty)\) is a continuous potential function, \(\lambda\) is a real parameter, and \(f:\mathbb{R}^N\times \mathbb{R}\rightarrow\mathbb{R}\) is a Carath´eodory function. In this paper, under suitable assumptions, we show the existence of infinitely many weak solutions for the problem above without assuming the Ambrosetti and Rabinowitz condition, by using the fountain theorem. Next, we give a result on the existence of a sequence of solutions for the problem above converging to zero in the \(L^\infty\)-norm by employing the Moser iteration under appropriate conditions.
A comparative<i>ab initio</i>study of the ferroelectric behaviour in KNO<sub>3</sub>and CaCO<sub>3</sub> (2007)

Potassium nitrate exhibits a reentrant phase transformation, where a metastable ferroelectric phase (gamma-KNO3) is formed upon cooling from high temperature. The layered structure of this ferroelectric phase is composed of alternating layers of potassium ions and nitrate groups; wherein, a central nitrogen atom is coordinated by three equilateral triangular oxygen atoms. The group layer is located less than midway between the cation layers, giving rise to a polar structure. From a structural perspective, the calcite phase of calcium carbonate looks quite similar to this ferroelectric phase; however; it does not exhibit a ferroelectric transition. In this work we have performed an ab initio computational analysis to study the: structural stability, electronic characteristics, and bonding of various phases and ferroelectric properties of CaCO3 and KNO3. We find that both material systems have mixed covalent and ionic bonding. The covalent interactions are within the group atoms of carbonate and nitrate atoms while the ionic interactions occur between the negatively charged ( carbonate or nitrate) group and the calcium or potassium cations. For the low temperature stable phase of CaCO3 (calcite), however, there is a slight covalency between the cations and the oxygen atoms of the group. This latter interaction results in the crystallization of CaCO3 in the calcite form and prevents a ferroelectric transition. We suggest that, in analogy to KNO3, a metastable form of CaCO3 may also exist, similar to the phase of gamma-KNO3 that should have a spontaneous polarization equal to 30.6 mu C cm(-2), twice that of gamma-KNO3. Moreover, our analysis indicates that this material should have a coercive field smaller than that of gamma-KNO3.
Gα11 induces caspase-mediated proteolytic activation of Rho-associated kinase, ROCK-I, in HeLa cells. (2002)

Page 42531: Fig. 6G is wrong. The correct figure and its legend are shown following.
Microvascular decompression for trigeminal neuralgia (2001)

A 58-year-old woman presented with sharp, lancinating pain in the V2 distribution unresponsive to carbamazepine. Her neurologic examination and an MRI were unremarkable. The patient underwent a posterior fossa craniectomy for …
Microfluidic Isolation of CD34-Positive Skin Cells Enables Regeneration of Hair and Sebaceous Glands In Vivo (2014)

Skin stem cells resident in the bulge area of hair follicles and at the basal layer of the epidermis are multipotent and able to self-renew when transplanted into full-thickness defects in nude mice. Based on cell surface markers such as CD34 and the α6-integrin, skin stem cells can be extracted from tissue-derived cell suspensions for engraftment using the gold standard cell separation technique of fluorescence-activated cell sorting (FACS). This paper describes an alternative separation method using microfluidic devices coated with degradable antibody-functionalized hydrogels. The microfluidic method allows direct injection of tissue digestate (no preprocessing tagging of cells is needed), is fast (45 minutes from injected sample to purified cells), and scalable. This method is used in this study to isolate CD34-positive (CD34+) cells from murine skin tissue digestate, and the functional capability of these cells is demonstrated by transplantation into nude mice using protocols developed by other groups for FACS-sorted cells. Specifically, the transplantation of microfluidic isolated CD34+ cells along with dermal and epidermal cells was observed to generate significant levels of hair follicles and sebaceous glands consistent with those observed previously with FACS-sorted cells.
Carotenoid responses to environmental stimuli: integrating redox and carbon controls into a fruit model (2013)

Carotenoids play an important role in plant adaptation to fluctuating environments as well as in the human diet by contributing to the prevention of chronic diseases. Insights have been gained recently into the way individual factors, genetic, environmental or developmental, control the carotenoid biosynthetic pathway at the molecular level. The identification of the rate-limiting steps of carotenogenesis has paved the way for programmes of breeding, and metabolic engineering, aimed at increasing the concentration of carotenoids in different crop species. However, the complexity that arises from the interactions between the different factors as well as from the coordination between organs remains poorly understood. This review focuses on recent advances in carotenoid responses to environmental stimuli and discusses how the interactions between the modulation factors and between organs affect carotenoid build-up. We develop the idea that reactive oxygen species/redox status and sugars/carbon status can be considered as integrated factors that account for most effects of the major environmental factors influencing carotenoid biosynthesis. The discussion highlights the concept of carotenoids or carotenoid-derivatives as stress signals that may be involved in feedback controls. We propose a conceptual model of the effects of environmental and developmental factors on carotenoid build-up in fruits.
The importance of preoperative evaluation of the subclavian vein in dialysis access planning. (1991)

Adequate venous outflow is critical to the proper function of a vascular-access graft (arteriovenous fistula) used for chronic hemodialysis. Stenosis of the subclavian vein can significantly compromise this venous outflow. The development of such subclavian vein stenoses has been associated with the prior placement of temporary subclavian vein dialysis catheters. We evaluated the importance of preoperative detection of these stenoses before placement of a permanent vascular-access graft in the upper extremity. Upper extremity venography was performed before placement of a permanent vascular-access graft in 43 patients. A total of 62 extremities were evaluated. A 40% prevalence of moderate or severe subclavian vein stenosis was found in patients with prior or existing temporary dialysis catheters in the subclavian vein. No stenoses were found in patients without a history of dialysis catheters in the subclavian vein. This difference in the prevalence of subclavian vein stenosis is statistically significant (p less than .001). In no case was the stenosis suspected clinically. Before placement of a permanent vascular-access graft, the subclavian vein should be evaluated in all patients with a history of a temporary dialysis catheter in the subclavian vein. The use of sites other than the subclavian vein for temporary dialysis is strongly encouraged.
K<sub>3+</sub><sub>δ</sub>C<sub>84</sub>. Higher Fullerene Analogues of the A<sub>3</sub>C<sub>60</sub> Superconductors (2001)

Face-centered cubic phases of both the D2 and D2d isomers of the C84 anion with band fillings close to those of the A3C60 superconductors are prepared by a two-step reaction involving saturated K8+xC84 phases as intermediates. Rietveld refinement shows that the structures are more disordered than those of K8+xC84, with incomplete occupancy of multiple cation sites and the presence of two anion orientations, while both temperature-dependent powder diffraction and EPR demonstrate the monophasic nature of the reaction products. The temperature-independent magnetic susceptibilities and line width variation in EPR indicate that these phases have finite densities of states at the Fermi level for both C84 majority isomers, unlike the previously prepared saturated phases, but dc magnetization measurements indicate the absence of superconductivity above 5 K.
Non-invasive temperature profile estimation in a lossy medium based on multi-band radiometric signals sensed by a microwave dual-purpose body-contacting antenna (2002)

Microwave radiometry has during the past two decades been investigated as a non-invasive scheme for measurement of subcutaneous tissue temperatures, basically for monitoring and control in hyperthermic treatment of cancer. In this effort, we test a contact-type, dual-purpose antenna with integral water bolus. To overcome conflicting optimization criteria in the integration of this thermometry technique with heat applicators exhibiting a large effective field size during superficial hyperthermia, a stacked configuration design is proposed, where the radiometer receive antenna (Archimedean spiral) is located on the front (skin) surface of the water bolus and the heating antenna (Dual-Concentric Conductor aperture) is placed on the bolus back surface. The motivation is to achieve homogeneous tissue heating simultaneously with non-invasive thermography of the target tissue under the applicator. This paper addresses the feasibility of predicting one-dimensional depth temperature profiles from multi-band brightness temperatures. The performance is investigated statistically by a Monte Carlo technique on both simulated and real heated-phantom data using up to six radiometric bands. Analysis of measured data shows that during the transient heating period in a solid lossy phantom, the inversion technique exhibits a precision (2sigmaT) and skewness (bias) of estimated compared to actual temperature profiles of better than +/-0.38 degrees C and +/-0.55 degrees C, respectively.
Generation of TW-scale mid-IR femtosecond pulses using a dual-chirped optical parametric amplification (2018)

By using a dual-chirped optical parametric amplification (DC-OPA) scheme, we demonstrate high-energy infrared (IR) pulses with TW-scale peak power in the wavelength region of 1 ∼ 3.5 μm. In the central wavelengths between 1.2 ∼ 1.8 μm, we obtained over 100 mJ pulse energy. DC-OPA, which is an energy scalable method for an OPA process, can allow us to use a joule-class Ti:sapphire laser system for pumping an OPA. To the best of our knowledge, our DC-OPA laser is the first 100-mJ-class IR source with pulse duration of shorter than 100 fs. Additionally, to show the ability of our DC-OPA laser system, we demonstrate an energy-scaling strategy of high-order harmonic driven by a loosely focused 1.5 μm pulse. Using a 4-cm Ne gas cell with a 3.5-m laser focusing length, soft x-ray harmonics beyond 200 eV are clearly enhanced by a phase-matching effect.
The galvanization of β-amyloid in Alzheimer's disease (2002)

Proceedings of the National Academy of Sciences (PNAS), a peer reviewed journal of the National Academy of Sciences (NAS) - an authoritative source of high-impact, original research that broadly spans the biological, physical, and social sciences.
Upper Bounds on the Size of Inner Voronoi Diagrams of Multiply Connected Polygons (2006)

The Voronoi diagram (VD) of a planar polygon has many applications, from path planning in robotics to collision detection in virtual reality. To study the complexity of algorithms based on Voronoi diagram, it is important to estimate the numbers of vertices and edges of a VD. Held proves that the inner Voronoi diagram of a simple polygon has at most n+k−2 vertices and 2(n+k)−3 edges, where n is the number of the polygon's vertices and k is the number of reflex vertices. But this conclusion holds not for a multiply-connected polygon, i.e. a polygon with holes. In this paper, by constructing a rooted tree from a VD, and based on some properties of the rooted tree, new upper bounds on the numbers of vertices and edges in an inner Voronoi diagram of a multiply-connected polygon are proved. The average numbers of Voronoi vertices and edges on the boundary of a VD are also presented. The result of this paper has been used to analyze the complexity of VD-based visibility computing algorithm in SDU Virtual Museum.
Long exposure localization in darkness using consumer cameras (2013)

In this paper we demonstrate passive vision-based localization in environments more than two orders of magnitude darker than the current benchmark using a $100 webcam and a $500 camera. Our approach uses the camera's maximum exposure duration and sensor gain to achieve appropriately exposed images even in unlit night-time environments, albeit with extreme levels of motion blur. Using the SeqSLAM algorithm, we first evaluate the effect of variable motion blur caused by simulated exposures of 132 ms to 10000 ms duration on localization performance. We then use actual long exposure camera datasets to demonstrate day-night localization in two different environments. Finally we perform a statistical analysis that compares the baseline performance of matching unprocessed grayscale images to using patch normalization and local neighborhood normalization - the two key SeqSLAM components. Our results and analysis show for the first time why the SeqSLAM algorithm is effective, and demonstrate the potential for cheap camera-based localization systems that function across extreme perceptual change.
Pancreatic Pain—Knowledge Gaps and Research Opportunities in Children and Adults (2021)

A workshop was sponsored by the National Institute of Diabetes and Digestive and Kidney Diseases to focus on research gaps and opportunities in pancreatic pain. The event was held on July 21, 2021, and structured into 4 sessions: (1) pathophysiology; (2) biomarkers, mediators, and pharmacology of pain; (3) pain assessment; and (4) pain treatment challenges and opportunities. The current state of knowledge was reviewed; many knowledge gaps and research needs were identified that require further investigation. Common themes included the need to better understand the underlying mechanisms of pain in pancreatic diseases, the relationship of visceral neural pathways and central pain centers, the role of behavioral factors and disorders on the perception of pain, and differences in pain perception and processes in children when compared with adults. In addition, the role of genetic risk factors for pain and the mechanisms and role of placebos in pain treatment were discussed. Methods of pain assessment including quantitative sensory testing were examined, as well as the process of central sensitization of pain. Finally, newer approaches to pain management including cognitive behavioral therapy, nerve stimulation, experimental (nonopioid) drugs, and cannabinoid compounds were covered.
Antennes à Hélices Quadrifilaires Compactes (2007)

National audience
Cloth-Based Hybridization Array System for the Identification of Food- Borne Listeria and confirmation of Listeria monocytogenes (2010)

A method was developed for the rapid identification of presumptive Listeria species colonies isolated from foods by standard culture on agar plates. Key indicator genes for L. monocytogenes, hlyA and inlJ, as well as an rRNA intergenic sequence marker for most members of the genus Listeria, are amplified in a multiplex PCR incorporating digoxigenin-11- dUTP, followed by hybridization of the amplicons with an array of specific oligonucleotide probes immobilized on polyester cloth, and subsequent immunoenzymatic assay of the bound digoxigenin label. This system also incorporates a simple internal amplification control (IAC) to gauge PCR inhibition. The cloth-based hybridization array system facilitated the sensitive and specific detection of multiple L. monocytogenes gene markers in a single assay procedure. The method exhibited 100% exclusivity and inclusivity characteristics in the analysis of pure cultures of different L. monocytogenes strains, other listeriae and several non-Listeria bacteria.
ChemInform Abstract: AMINO ACIDS AND PEPTIDES. XXVII. A NOVEL REDUCTIVE CLEAVAGE OF NITROGEN‐CARBON‐NITROGEN BONDS WITH SODIUM BOROHYDRIDE (1977)

Abstract Das aus (S)‐1,2,3,4‐Tetrahydro‐β‐carbolinβ‐carbonsäure (I) erhältliche N‐Benzyloxycarbonylderivat (II) liefert durch Behandlung mit Diphenylphosphorazidat/Triäthylamin in DMF und nachfolgend mit tert.‐Butanol das tert.‐Butylcarbamat (III).
Efficiency, Fairness, and Stability in Non-Commercial Peer-to-Peer\n Ridesharing (2021)

Unlike commercial ridesharing, non-commercial peer-to-peer (P2P) ridesharing\nhas been subject to limited research -- although it can promote viable\nsolutions in non-urban communities. This paper focuses on the core problem in\nP2P ridesharing: the matching of riders and drivers. We elevate users'\npreferences as a first-order concern and introduce novel notions of fairness\nand stability in P2P ridesharing. We propose algorithms for efficient matching\nwhile considering user-centric factors, including users' preferred departure\ntime, fairness, and stability. Results suggest that fair and stable solutions\ncan be obtained in reasonable computational times and can improve baseline\noutcomes based on system-wide efficiency exclusively.\n
Evaluation of Minilator Use on PTLOX and C-141 Oxygen Systems. (1995)

Abstract : The Minilator is a compact device used to deliver a constant flow of oxygen at a maximum of 15 liters per minute (LPM). It is capable of delivering oxygen for one to five patients simultaneously. The purpose of this study was to validate its air worthiness and find the maximum number of minilators that can be used with the 10 liter PILOX and C.141 LOX supply systems. It also established that a minilator cannot be used in line with a ventilator. It was determined that a ventilator with a requirement of 50 + or - 5 should not be-supported by a gas supply from a hose length exceeding 400 feet. For optimum performance of the ventilator, hose length should not exceed 100 feet. Four people being administered 15 LPM can be supported from one 10 liter PTLOX. Thirty-eight people being administered 15 LPM can be supported from the C-141 liquid oxygen system. Any combination of minilators can be used as along as the recommended parameters stated in this study are followed.
Regulation of gut glutamine metabolism: role of hormones and cytokines (1995)

The use of glutamine by several types of rapidly-dividing cell such as enterocytes This has formed the basis for using this amino acid as an adjuvant nutritional supplement. The early studies of Little is known, however, about the various alterations in glutamine metabolism that occur during periods of stress. The present paper attempts to address some of the variables involved in intestinal glutamine metabolism during periods of stress. We have chosen to address the effects of various hormones and cytokines on the inter-organ metabolism of this amino acid. The data presented here have, in a large part, been generated in the conscious dog model.
BIRADICAL SPIN LABELING FOR NERVE MEMBRANES (1969)

We have explored the behavior of pair interaction in a suitable biradical when it is bound by van der Waals' forces in a nerve membrane. We have concomitantly examined a set of model solvents to represent this situation. It appears that the biradical suffers a restriction of internal motion with a minimal restraint on its external motion in the nerve medium. The biradical is so situated as not to respond to the passage of the action potential.
Influence of polymethacrylate viscosity index improvers on friction and wear of lubricant formulations (2007)

<div class="htmlview paragraph">Polyalkylmethacrylates (PAMAs) are widely used as viscosity index improvers and dispersant boosters in engine, transmission and hydraulic oils. They have been shown to be able to adsorb from oil solution on to metal surfaces, to produce thick, viscous boundary films. These films enhance lubricant film formation in slow speed and high temperature conditions and thus produce a significant reduction of friction and wear. In a recent systematic study a range of dispersant and non-dispersant PAMAs has been synthesized. The influence of different functionalities, molecular weights and architectures on both boundary film formation and friction has been explored using optical interferometry and friction-speed charting. From the results, guidelines have been developed for designing PAMAs having optimal boundary lubricating properties.</div> <div class="htmlview paragraph">In the current paper the film forming, friction and wear properties of solutions of two functionalised PAMAs is first described. Then the impact of different lubricant additives on these friction and wear properties is explored. A number of components from all major classes of additives commonly used in commercial DI packages have been investigated. The results help the performance of PAMAs in fully formulated oils to be predicted and thus their design to be optimized.</div>