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Journal articles on the topic 'QAV-1'

Author: Grafiati

Published: 4 June 2021

Last updated: 9 February 2022

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1

Pflueger, Axel C., Timothy S. Larson, Siegfried Hagl, and Franklyn G. Knox. "Role of nitric oxide in intrarenal hemodynamics in experimental diabetes mellitus in rats." American Journal of Physiology-Regulatory, Integrative and Comparative Physiology 277, no. 3 (1999): R725—R733. http://dx.doi.org/10.1152/ajpregu.1999.277.3.r725.

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The role of nitric oxide (NO) in the regulation of the intrarenal microcirculation in streptozotocin (STZ)-induced diabetes mellitus in rats is not clear. We examined renal cortical and papillary hemodynamics in STZ rats and determined the effects of systemic inhibition and stimulation of NO synthesis. Renal blood flow in cortical (QCC), and inner medullary ascending (QAV) and descending (QDV) vasa recta capillaries was measured by fluorescence videomicroscopy in STZ Munich-Wistar rats and nondiabetic control rats. Ten days after STZ injection (80 mg/kg ip), basal QCC and QDV were significantl

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Sitdykov, R. M., E. N. Shaidullin, and A. Y. Zubkov. "Choosing the surgical treatment method for benign prostatic hyperplasia." Kazan medical journal 94, no. 3 (2013): 409–12. http://dx.doi.org/10.17816/kmj2196.

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Aim. To assess the surgical treatment outcomes for benign prostatic hyperplasia. Methods. The surgical treatment outcomes for benign prostatic hyperplasia were analyzed in 72 patients. 44 patients underwent transvesical prostatectomy ended with blind urinary bladder stitch, 28 patients with a prostate volume of less than 60 ml were offered transurethral resection of prostate. The patients’ mean age was 73.6 years. Inclusion criteria were: average urination flow rate (Qav) 10 ml/sec, total international prostate symptom score (I-PSS) 19, residual urine volume 50 ml. Prostate volume ranged from

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Sharrock, D. S., I. G. Main, and A. Douglas. "Observations of Q from the northwest Pacific subduction zone recorded at teleseismic distances." Bulletin of the Seismological Society of America 85, no. 1 (1995): 237–53. http://dx.doi.org/10.1785/bssa0850010237.

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Abstract Twenty-seven earthquakes in the northwest Pacific, with mb ≧ 5.4, are used to study upper-mantle attenuation. The data were recorded at seismometer arrays in Australia, Canada, India, and Scotland. The short-period instruments used in the arrays are sufficiently broadband, and the signal-to-noise enhancement resulting from beamforming the data is good enough, that seismic noise is above system noise out to between 3 and 5 Hz, and in some cases to 8 Hz. The instrument response has been removed and a power law (ω−2) farfield source correction has been assumed and applied. The remaining

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Birol, Gülnur, Shufan Wang, Ewa Budzynski, Norbert D. Wangsa-Wirawan, and Robert A. Linsenmeier. "Oxygen distribution and consumption in the macaque retina." American Journal of Physiology-Heart and Circulatory Physiology 293, no. 3 (2007): H1696—H1704. http://dx.doi.org/10.1152/ajpheart.00221.2007.

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The oxygen distribution in the retina of six anesthetized macaques was investigated as a model for retinal oxygenation in the human retina in and adjacent to the fovea. Po2 was measured as a function of retinal depth under normal physiological conditions in light and dark adaptation with O2 microelectrodes. Oxygen consumption (Qo2) of the photoreceptors was extracted by fitting a steady-state diffusion model to Po2 measurements. In the perifovea, the Po2 was 48 ± 13 mmHg (mean and SD) at the choroid and fell to a minimum of 3.8 ± 1.9 mmHg around the photoreceptor inner segments in dark adaptat

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Dmitrienko, N. U., L. R. Sarap, and E. A. Kirienkova. "Evaluation of microcirculation in the pulp of immature permanent teeth by ultrasound doppler after direct pulp capping with bioactive materials." Regional blood circulation and microcirculation 17, no. 2 (2018): 26–29. http://dx.doi.org/10.24884/1682-6655-2018-17-2-26-29.

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Objectives. Our objectives were to study microcirculations in the pulp of immature permanent teeth after direct pulp capping with bioactive materials at long-term (6 and 12 months). Material and methods. In 30 children aged 6 to 13 years, 53 immature permanent teeth were treated by direct pulp capping. In group 1 (n = 29) was used a material based on dicalcium- and tricalcium silicates and calcium carbonate («Biodentine»); in group 2 (n = 24) was used a material based on calcium, silicon and aluminum oxides («Trioxident»). Vas, Vam, Qas, Qam, PI were evaluated before the treatment, 6 and 12 mo

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Li, Ting, Chencen Guo, Tonghui Xie, Chengxianyi Zhou, and Yongkui Zhang. "Preparation of quaternary ammonium–Chlorella vulgaris and its adsorption of Ag(CN)2−." Water Science and Technology 72, no. 8 (2015): 1437–45. http://dx.doi.org/10.2166/wst.2015.262.

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A novel anion exchange resin, quaternary ammonium–Chlorella vulgaris (QACV), was prepared by introducing quaternary ammonium groups onto dried Chlorella vulgaris as base material. Degrees of epoxy, amine and quaternary ammonium groups of QACV were measured. Water retention, optical microscopy, and Fourier transform infrared spectrometry were used to characterize QAVC. The adsorption behavior of QACV towards Ag(CN)2− in different conditions was studied carefully. The results showed that QAVC was efficient to adsorb Ag(CN)2− at pH 9–11, and adsorption equilibrium was almost reached in 30 min. Bo

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Klemperer, Elias M., Robin Mermelstein, Timothy B. Baker, et al. "Predictors of Smoking Cessation Attempts and Success Following Motivation-Phase Interventions Among People Initially Unwilling to Quit Smoking." Nicotine & Tobacco Research 22, no. 9 (2020): 1446–52. http://dx.doi.org/10.1093/ntr/ntaa051.

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Abstract Introduction Most people who smoke cigarettes are not willing (ie, not ready) to make a quit attempt (QA) at any given time. Unfortunately, interventions intended to increase QAs and the success of QAs are only modestly effective. Identifying processes leading to QAs and quitting success could guide intervention development. Aims and Methods This is a secondary analysis of a randomized factorial trial of 6 weeks of motivation-phase interventions among primary care patients (N = 517) who were initially unwilling to quit but were willing to reduce their smoking. Using logistic regressio

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Park, Ji Eun, Heaji Lee, Hyunkyung Rho, Seong Min Hong, Sun Yeou Kim, and Yunsook Lim. "Effect of Quamoclit angulata Extract Supplementation on Oxidative Stress and Inflammation on Hyperglycemia-Induced Renal Damage in Type 2 Diabetic Mice." Antioxidants 9, no. 6 (2020): 459. http://dx.doi.org/10.3390/antiox9060459.

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Type 2 diabetes mellitus (T2DM) is caused by abnormalities of controlling blood glucose and insulin homeostasis. Especially, hyperglycemia causes hyper-inflammation through activation of NLRP3 inflammasome, which can lead to cell apoptosis, hypertrophy, and fibrosis. Quamoclit angulata (QA), one of the annual winders, has been shown ameliorative effects on diabetes. The current study investigated whether the QA extract (QAE) attenuated hyperglycemia-induced renal inflammation related to NLRP inflammasome and oxidative stress in high fat diet (HFD)-induced diabetic mice. After T2DM was induced,

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Klemperer, Elias M., John R. Hughes, and Peter W. Callas. "Increasing Quit Attempts by Transitioning to Very Low Nicotine Content Cigarettes Versus Reducing Number of Cigarettes Per Day: A Secondary Analysis of an Exploratory Randomized Trial." Nicotine & Tobacco Research 21, Supplement_1 (2019): S81—S87. http://dx.doi.org/10.1093/ntr/ntz145.

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Abstract Introduction The Food and Drug Administration (FDA) has proposed reducing nicotine with very low nicotine content (VLNC) cigarettes. In contrast, reducing nicotine by reducing number of cigarettes per day (CPD) is common. Our prior findings demonstrate that VLNC cigarettes decreased dependence more and were more acceptable than reducing CPD. This secondary analysis explored which reduction strategy increased quit attempts (QA), self-efficacy, or intention to quit more. Methods This is a secondary analysis of 68 adult daily smokers not ready to quit randomized to smoke VLNC cigarettes

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Leroy, Elisabeth, Donatella Lattuada, Claudia Casnicl, Paola Franco, and Ornella E. A. Marelli. "Down Regulation of Qa Gene Expression on Drug-Modified Tumor Cells." Tumori Journal 79, no. 6 (1993): 439–43. http://dx.doi.org/10.1177/030089169307900614.

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Background Mouse leukemia, L1210, strongly enhances its immunogenicity following in vivo treatment with 5-(3-3′-dimethyl-1-triazeno) imidazole-4-carboxamide (DTIC). Previous experiments have shown that transformed cells elicit a cell-mediated response accountable for rejection and resistance to a subsequent injection of parental tumor into a syngeneic host. L1210 expresses classical H-2 class I molecules, and since it has been shown that DTIC treatment does not modify the expression of these molecules, this is a suitable model to study nonclassical class I antigens, such as Qa2 glycoproteins,

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Sun, Zhi-Hong. "The expansion of ∏k=1∞(1-qak)(1-qbk)." Acta Arithmetica 134, no. 1 (2008): 11–29. http://dx.doi.org/10.4064/aa134-1-2.

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Klemperer, Elias M., John R. Hughes, and Shelly Naud. "Distal Measurements Can Produce False Negative Results: A Prospective Secondary Analysis of a Natural History Study." Nicotine & Tobacco Research 21, no. 12 (2018): 1727–30. http://dx.doi.org/10.1093/ntr/nty110.

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Abstract Introduction Most prospective studies of quit attempts (QAs) or abstinence measure the ability of variables to predict quitting many weeks or months later. This design ignores more proximal fluctuations in the predictor that may be more relevant. The present secondary analysis compares 6-week (distal) and daily (proximal) changes in cigarettes per day (CPD) as predictors of making a QA. Methods Daily smokers reported CPD and QAs nightly throughout a 12-week natural history study. We provided no treatment. In the distal analysis, we tested whether reduction in CPD between baseline and

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Dewoskin, Robert S., and John H. Haw. "Sampling Techniques for Data Audits." Journal of the American College of Toxicology 8, no. 2 (1989): 333–38. http://dx.doi.org/10.3109/10915818909019558.

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The data audit is a critical element in any quality assurance program and an area in which considerably more methods development is needed. To assist the QAU in organizing the requirements of the data audit for bioassay data and in developing a more rational and flexible sampling strategy, a decision tree has been designed. Surprisingly few QA auditors are aware of the many options available in performing a data audit. The general rule of thumb is the 10% audit, but other sampling plans may best represent the potential error rate of the whole data set. Presented here is a step-by-step approach

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Şadlinski, V. B., Q. Ş. Qarayev та H. F. Xıdırova. "Eksperimentdə ekzogen və endogen toksikozlar zamanı qaraciyərdə limfa dövranının əsas xüsusiyyətləri". Journal of Theoretical, Clinical and Experimental Morphology 1, № 5 (2019): 69–75. http://dx.doi.org/10.28942/jtcem.v1i5.88.

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İşin məqsədi: Ekzogen və endogen intoksikasiya modeli yaratmaqla qaraciyərin limfa dövranında baş verən dəyişkənliyi aydınlaşdırmaqdır. Material və metodlar: Tədqiqatlar Azərbaycan Tibb Universitetinin Elmi-Tədqiqat Mərkəzində 48 baş şinşilla cinsinə mənsub olan dovşan üzərində aparılmışdır. Onlardan 8 başı təcrübə apararkən buraxılan metodik səhvlər nəticəsində ölmüş və təcrübədən çıxarılmışdır. Qalan 40 baş dovşan üzərində planda nəzərdə tutulan təcrübələr qoyulmuş və onlar müvafiq olaraq aşağıdakı qruplara bölünmüşdür. Nəticələr: Təcrübədən alınmış nəticələr göstərmişdir ki, tən

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Tiwari, Abhishek, and Anita Singh. "Synthesis and evaluation of possible mechanism of anti nociceptive potential of novel 2-quinolone fused 3,5-pyrazolidinedione derivatives in experimental animal models." Analele Universitatii "Ovidius" Constanta - Seria Chimie 24, no. 1 (2013): 5–12. http://dx.doi.org/10.2478/auoc-2013-0001.

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AbstractIn the present synthesis a series of 1-(1-methyl-2-oxo-1,2-dihydroquinolin-4-yl)-2-substituted phenylpyrazolidine-3,5-diones were prepared. By the reaction of N-methylbenzenamine with diethyl malonoate 4-hydroxy-1-methylquinolin-2(1H)-one were prepared, which on treatment with posphoryl chloride converted into 4-chloro-1-methylquinolin-2(1H)-one. Subsequently with substituted phenyl hydrazines 1-methyl-4-(2- substitutedphenylhydrazinyl)quinolin-2(1H)-one were obtained, which on reaction with diethyl malonate gave 1- (1-methyl-2-oxo-1,2-dihydroquinolin-4-yl)-2-substituted phenylpyrazoli

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Al-Rajab, A. J., A. M. Alhababy, and T. Alfaifi. "Persistence of imidacloprid, acetamiprid and methomyl in qat leaves." Hellenic Plant Protection Journal 9, no. 2 (2016): 51–59. http://dx.doi.org/10.1515/hppj-2016-0006.

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SummaryQat leaves are chewed on a daily basis by approximately 10 million inhabitants of different countries. This study investigated the persistence of three insecticides most used in qat production, imidacloprid, acetamiprid and methomyl. These chemicals were applied separately on plots of ten qat trees each at the recommended application rates. Samples of qat leaves were collected separately at time 0 (1 h post-treatment) and 1, 3, 7, 12, 19, 26 and 37 days after application. The residues of the investigated pesticides were extracted and then quantified by liquid chromatography (LC-MS/MS).

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Cotterill, Lisa A., Hans J. Stauss, Margaret M. Millrain, et al. "Qa-1 interaction and T cell recognition of the Qa-1 determinant modifier peptide." European Journal of Immunology 27, no. 9 (1997): 2123–32. http://dx.doi.org/10.1002/eji.1830270902.

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Sanchez, D. Y., and A. L. Blatz. "Block of neuronal chloride channels by tetraethylammonium ion derivatives." Journal of General Physiology 106, no. 5 (1995): 1031–46. http://dx.doi.org/10.1085/jgp.106.5.1031.

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The block by the symmetric tetraethylammonium (TEA) ion derivatives tetrapropylammonium (TPrA), tetrabutylammonium (TBA), and tetrapentylammonium (TPeA) ions of fast chloride channels in acutely dissociated rat cortical neurons was studied with the excised inside-out configuration of the patch-clamp technique. When applied to the intracellular membrane surface, all three of the quaternary ammonium compounds (QAs) induced the appearance of short-lived closed states in a manner consistent with a blocking mechanism where the blocker preferentially binds to the open kinetic state and completely bl

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Ahmad, Husham Jawad. "Performance Evaluation and Simulation of M-Ary Quadrature Amplitude Modulation Schemes with VisSim/Comm Software." Cihan University-Erbil Scientific Journal 3, no. 2 (2019): 58–63. http://dx.doi.org/10.24086/cuesj.v3n2y2019.pp58-63.

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M-ary modulation schemes are considered one of widely used digital modulation in practice because of its high efficiency in power and bandwidth. Therefore, this necessity the need to study and evaluate the performance of M-ary schemes using simulation techniques. In this paper, the performance of M-ary modulations schemes M-ary quadrature amplitude modulation (QAM) is considered. Because of its efficiency in power and bandwidth, M-ary QAM (M-QAM) is one of the widely used modulation techniques in practice. Therefore, a need for studying and evaluating the performance of QAM modulation schemes

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Mussawy, Sayed Ahmad Javid, and Gretchen B. Rossman. "Faculty Members’ Perceptions of Quality Assurance and Accreditation in Afghanistan." Higher Learning Research Communications 8, no. 2 (2018): 9–34. http://dx.doi.org/10.18870/hlrc.v8i2.411.

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Abstract This study investigated faculty members’ perceptions of quality assurance and accreditation (QAA) in Afghanistan. The study aimed to examine how familiar faculty members were with QAA policy, quality concepts, QAA processes, and whether QAA process has improved the status quo. Through a sequential exploratory mixed methods design, the investigators interviewed seven faculty members at four universities, and subsequently conducted a self-administered survey questionnaire at six universities (two public and four private). A response rate of 54 percent (N = 42) was obtained from th

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Amelin, V. G., and D. S. Bolshakov. "Determination of quaternary ammonium compounds in food products by the method of ultra-performance liquid chromatography/high resolution mass-spectrometry." Industrial laboratory. Diagnostics of materials 86, no. 8 (2020): 23–31. http://dx.doi.org/10.26896/1028-6861-2020-86-8-23-31.

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The goal of the study is developing a methodology for determination of the residual amounts of quaternary ammonium compounds (QAC) in food products by UHPLC/high-resolution mass spectrometry after water-acetonitrile extraction of the determined components from the analyzed samples. The identification and determination of QAC was carried out on an «UltiMate 3000» ultra-high-performance liquid chromatograph (Thermo Scientific, USA) equipped with a «maXis 4G» high-resolution quadrupole-time-of-flight mass spectrometric detector and an ion spray «ionBooster» source (Bruker Daltonics, Germany). Sam

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GOZZELINO, G., D. E. ROMERO TOBAR, N. CHAITIEMWONG, W. HAZELEGER, and R. BEUMER. "Antibacterial Activity of Reactive Quaternary Ammonium Compounds in Solution and in Nonleachable Coatings." Journal of Food Protection 74, no. 12 (2011): 2107–12. http://dx.doi.org/10.4315/0362-028x.jfp-11-220.

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Antibacterial polymers suitable for coating applications without leaching of the biocidal component have been obtained by UV copolymerization of acrylic resins with acrylic monomers containing quaternary ammonium moieties. Suitable reactive biocides, based on quaternary ammonium monomers (QAMs), endowed with undecylacryloyl group and alkyl chains with 2 (QAM-C2), 8 (QAM-C8), and 16 (QAM-C16) carbon atoms have been synthesized. Aqueous solutions of QAMs showed biocidal activity against Escherichia coli, Staphylococcus aureus, and Listeria monocytogenes strains both in suspension and adhered to

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Atroosh, K. B., and M. A. Al-Moayad. "Water Requirements of Qat (Catha edulis) Cultivation in the Central Highlands of Yemen." Journal of Scientific Research 4, no. 1 (2011): 77. http://dx.doi.org/10.3329/jsr.v4i1.7544.

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Water requirements of qat (Catha edulis) under irrigated and rainfed production systems in the central highlands in Yemen were studied during 2003 and 2004 at 6 sites. The crop evapotranspiration of qat was calculated by balancing method, where the sources of evapotranspiration were irrigation water and rainfall. The amounts of crop evapotranspiation of qat during winter months were less than other months of the year under both irrigated and rainfed conditions. The maximum daily evapotranspiration was 2.5 mm during summer season. The annual crop evapotranspiration for the irrigated qat in the

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Fukuoka, T., Y. Nakai, D. Hayashi, et al. "An area effective 1-chip QAM LSI for digital CATV." IEEE Transactions on Consumer Electronics 43, no. 3 (1997): 649–54. http://dx.doi.org/10.1109/30.628690.

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Alsamil, Ali M., Thijs J. Giezen, Toine C. Egberts, Hubert G. Leufkens, and Helga Gardarsdottir. "Type and Extent of Information on (Potentially Critical) Quality Attributes Described in European Public Assessment Reports for Adalimumab Biosimilars." Pharmaceuticals 14, no. 3 (2021): 189. http://dx.doi.org/10.3390/ph14030189.

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Regulatory approval of biosimilars predominantly relies on biosimilarity assessments of quality attributes (QAs), particularly the potentially critical QAs (pCQAs) that may affect the clinical profile. However, a limited understanding exists concerning how EU regulators reflect the biosimilarity assessments of (pC)QAs in European public assessment reports (EPARs) by different stakeholders. The type and extent of information on QAs and pCQAs in EPARs were evaluated for seven adalimumab biosimilars. Seventy-seven QAs, including 31 pCQAs, were classified and assessed for type (structural and func

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Lu, Linrong, Miriam B. F. Werneck, and Harvey Cantor. "The immunoregulatory effects of Qa-1." Immunological Reviews 212, no. 1 (2006): 51–59. http://dx.doi.org/10.1111/j.0105-2896.2006.00418.x.

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Henry, R. P. "Quaternary ammonium sulfanilamide: a membrane-impermeant carbonic anhydrase inhibitor." American Journal of Physiology-Regulatory, Integrative and Comparative Physiology 252, no. 5 (1987): R959—R965. http://dx.doi.org/10.1152/ajpregu.1987.252.5.r959.

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A novel carbonic anhydrase (CA) inhibitor, quaternary ammonium sulfanilamide (QAS), was tested for potency as a CA inhibitor and for its ability to be excluded from permeating biological membranes. Inhibitor titration plots of QAS vs. pure bovine CA II and CA from the gills of the blue crab, Callinectes sapidus, yielded Ki values of approximately 15 microM; thus QAS is a relatively weak but effective CA inhibitor. Permeability of the QAS was directly tested by two independent methods. The inhibitor was excluded from human erythrocytes incubated in 5 mM QAS for 24 h as determined using an 18O-l

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Crismaru, Mihaela, Lia A. T. W. Asri, Ton J. A. Loontjens, et al. "Survival of Adhering Staphylococci during Exposure to a Quaternary Ammonium Compound Evaluated by Using Atomic Force Microscopy Imaging." Antimicrobial Agents and Chemotherapy 55, no. 11 (2011): 5010–17. http://dx.doi.org/10.1128/aac.05062-11.

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ABSTRACTEffects of a quaternary ammonium compound (QAC) on the survival of adhering staphylococci on a surface were investigated using atomic force microscopy (AFM). Four strains with different minimal inhibitory concentrations (MIC) and minimal bactericidal concentrations (MBC) for the QAC were exposed to three different concentrations of the QAC in potassium phosphate buffer (0.5×, 1×, and 2× MBC) while adhering to glass. Adhering staphylococci were repeatedly imaged with AFM in the contact mode, and the cell surface was found to wrinkle upon progressive exposure to the QAC until bacteria di

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TAORMINA, PETER J., and WARREN J. DORSA. "Evaluation of Hot-Water and Sanitizer Dip Treatments of Knives Contaminated with Bacteria and Meat Residue." Journal of Food Protection 70, no. 3 (2007): 648–54. http://dx.doi.org/10.4315/0362-028x-70.3.648.

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Hot water (HW; 82.2°C, 180°F) is used for sanitation of meat cutting implements in most slaughter facilities, but validation of actual practices against meat-borne bacterial pathogens and spoilage flora is lacking. Observed implement immersions in HW in two large pork processing plants were found to typically be ≤1 s. Impact of these practices on bacteria on metal surfaces was assessed in the laboratory, and alternative treatments were investigated. Knives were inoculated with raw pork residues and Escherichia coli O157:H7, Salmonella Typhimurium DT104, Clostridium perfringens, and Lactobacill

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Zenatti, Dilcemara C., Simone D. Gomes, Ajadir Fazolo, Ricardo N. Costanzi, Salah D. M. Hasan, and André L. Gentelini. "Nitrificação de efluente de abatedouro de tilápia em função da aeração e tempo de reação." Revista Brasileira de Engenharia Agrícola e Ambiental 13, no. 6 (2009): 750–54. http://dx.doi.org/10.1590/s1415-43662009000600013.

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A ocorrência de compostos nitrogenados em água residuária de abatedouro de tilápia acima dos limites legais, tem causado sérios problemas de poluição em corpos d'água receptores. O processo biológico para remoção dessas substâncias comumente encontradas sob a forma de nitrogênio amoniacal, é conhecido como nitrificação. Objetivou-se, com o presente trabalho, estudar o efeito do tempo de reação (TR) e da aeração na eficiência da remoção de nitrogênio amoniacal e na conversão do nitrogênio amoniacal a nitrato, de água residuária de abate de tilápia em um reator em batelada sequencial com biofilm

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Hongo, Jumpei, Keisuke Kasai, Masato Yoshida, and Masataka Nakazawa. "1-Gsymbol/s 64-QAM Coherent Optical Transmission Over 150 km." IEEE Photonics Technology Letters 19, no. 9 (2007): 638–40. http://dx.doi.org/10.1109/lpt.2007.894944.

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Alevizos, Panos N. "Low-Complexity Multiuser QAM Detection for Uplink 1-bit Massive MIMO." IEEE Communications Letters 22, no. 8 (2018): 1592–95. http://dx.doi.org/10.1109/lcomm.2018.2844346.

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Kilbridge, Kerry L., Bernard F. Cole, John M. Kirkwood, et al. "Quality-of-Life–Adjusted Survival Analysis of High-Dose Adjuvant Interferon Alfa-2b for High-Risk Melanoma Patients Using Intergroup Clinical Trial Data." Journal of Clinical Oncology 20, no. 5 (2002): 1311–18. http://dx.doi.org/10.1200/jco.2002.20.5.1311.

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PURPOSE: High-dose adjuvant interferon alfa-2b (IFNα2b) for high-risk melanoma is a 1-year regimen that improves relapse-free and overall survival but has significant toxicity. A quality-of-life–adjusted survival (QAS) analysis analysis of two cooperative group phase III trials, E1684 and E1690/S9111/C9190, was performed, incorporating patient values (utilities) for the toxicity of IFNα2b treatment and melanoma recurrence. PATIENTS AND METHODS: Quality-Adjusted Time Without Symptoms or Toxicity methodology was used with melanoma patient utilities and trial data to estimate the effect of IFNα2b

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Hu, F., A. Comtois, and A. E. Grassino. "Contraction-dependent modulations in regional diaphragmatic blood flow." Journal of Applied Physiology 68, no. 5 (1990): 2019–28. http://dx.doi.org/10.1152/jappl.1990.68.5.2019.

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Blood flow (Q) of the diaphragm was measured simultaneously with Doppler probes placed on diaphragmatic veins and an artery and by direct volumetric measurements obtained from cannulation of diaphragmatic blood vessels. The Doppler converting coefficients obtained were 6.27, 7.25, 4.21, and 41.07 ml.min-1.kHz-1 for left phrenic artery flow (Qpha), phrenic vein flow (Qphv), internal mammary vein flow (Qimv), and azygos vein flow (Qazv), respectively. The time course of Qpha, Qphv, Qimv, and Qazv after imposed patterns of diaphragmatic contraction was measured in nine anesthetized dogs. Each pat

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Moravej, Ali, Amin Kouhpayeh, Bita Geramizadeh, et al. "The Effect of Mesenchymal Stem Cells on the Expression of IDOand Qa2 Molecules in Dendritic Cells." Advanced Pharmaceutical Bulletin 9, no. 1 (2019): 56–63. http://dx.doi.org/10.15171/apb.2019.007.

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Purpose: Mesenchymal stem cells (MSCs) have been shown to reduce the activity of immunecells, including dendritic cells (DCs). But the exact mechanism of mesenchymal inhibitionof DCs is still unknown. In this study, the effect of mesenchymal cells on the expression ofindoleamine dioxygenase (IDO) and Qa2 molecules in DCs was evaluated.Methods: MSCs and DCs were respectively isolated from the bone marrow and spleen of BALB/cmice. Then DCs were co-cultured with MSCs in the present and absence of lipopolysaccharides(LPS). Then the expression of mRNA and protein of IDO and Qa2 molecules were inves

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Kode, Divya, Ramakrishna Nannapaneni, Mohit Bansal, et al. "Low-Level Tolerance to Fluoroquinolone Antibiotic Ciprofloxacin in QAC-Adapted Subpopulations of Listeria monocytogenes." Microorganisms 9, no. 5 (2021): 1052. http://dx.doi.org/10.3390/microorganisms9051052.

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There was a development of low-level tolerance to fluoroquinolone antibiotic ciprofloxacin in Listeria monocytogenes after sublethal adaptation to quaternary ammonium compound (QAC). Using eight L. monocytogenes strains, we determined the changes in short-range MIC, growth rate, and survival for heterologous stress response to ciprofloxacin, after sublethal exposure to daily cycles of fixed or gradually increasing concentration of QAC. Three main findings were observed. (1) MIC increase—QAC-adapted subpopulations exhibited a significant increase in short-range MIC of ciprofloxacin, by 1.5 to 2

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Grillitsch, B., O. Gans, N. Kreuzinger, S. Scharf, M. Uhl, and M. Fuerhacker. "Environmental risk assessment for quaternary ammonium compounds: a case study from Austria." Water Science and Technology 54, no. 11-12 (2006): 111–18. http://dx.doi.org/10.2166/wst.2006.840.

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Quaternary ammonium compounds (QAC) are widely used as disinfectants, biocides, and detergents, among a variety of other applications. The cationic surface-activity of QAC determines their potential to act as a biocide on both target and non-target organisms. This study aims to provide a broad-based environmental risk characterization and evaluation for selected QAC with particular focus on the situation in Austrian rivers. A modular study design was employed involving environmental exposure characterization, QAC fate and effect analysis in wastewater, ecotoxicological effect characterization,

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Ying, Ge, Jing Wang, Vipin Kumar, and Dirk M. Zajonc. "Crystal structure of Qa-1a with bound Qa-1 determinant modifier peptide." PLOS ONE 12, no. 8 (2017): e0182296. http://dx.doi.org/10.1371/journal.pone.0182296.

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Giang, Dang Vu. "Persistence and global attractivity in the model An+1=qAn+Fn(An,An-1,…,An-m)." Communications in Nonlinear Science and Numerical Simulation 14, no. 4 (2009): 1115–20. http://dx.doi.org/10.1016/j.cnsns.2008.01.003.

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Talukder, MHK, R. Nazneen, MZ Hossain, et al. "Quality Assurance Scheme (QAS) in Medical & Dental Colleges in Bangladesh -Teacher's Knowledge." Bangladesh Journal of Medical Biochemistry 3, no. 1 (2013): 6–10. http://dx.doi.org/10.3329/bjmb.v3i1.13800.

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This cross-sectional study was conducted with the objective to assess the teacher's knowledge about ongoing quality assurance scheme (QAS) at different government and nongovernment medical & dental colleges in Bangladesh. Teachers of different categories were the respondents of this study. Self administered structured questionnaire was used to collect data adopting simple random sampling. The study was conducted in 2008 & 2009. The study revealed that both government and nongovernment medical colleges are conducting the QAS in their respective institutions. The academic coordinator pla

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Huang, Rongshun, Huabo Sun, Chen Wu, Chun Wang, and Binbin Lu. "Estimating Eddy Dissipation Rate with QAR Flight Big Data." Applied Sciences 9, no. 23 (2019): 5192. http://dx.doi.org/10.3390/app9235192.

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Air turbulence (AT) is a typical risk that seriously threatens civil aviation safety. It is typically measured via vertical overload, derived equivalent vertical gust velocity (DEVG), and eddy dissipation rate (EDR), while the last one is the most ideal index. In this study, we combined two traditional methods of EDR estimation and proposed a new procedure to estimated EDR with quick access recorder (QAR) data. It enables us to use the parameters only from QAR data for EDR estimation, which fully reflects the great value of QAR data. We estimated EDR values with QAR data collected by the Civil

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Ewing, James R., Ling Wei, Robert A. Knight, et al. "Direct Comparison of Local Cerebral Blood Flow Rates Measured by MRI Arterial Spin-Tagging and Quantitative Autoradiography in a Rat Model of Experimental Cerebral Ischemia." Journal of Cerebral Blood Flow & Metabolism 23, no. 2 (2003): 198–209. http://dx.doi.org/10.1097/01.wcb.0000046147.31247.e8.

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The present study determined cerebral blood flow (CBF) in the rat using two different magnetic resonance imaging (MRI) arterial spin-tagging (AST) methods and 14C-iodoantipyrine (IAP)-quantitative autoradiography (QAR), a standard but terminal technique used for imaging and quantitating CBF, and compared the resulting data sets to assess the precision and accuracy of the different techniques. Two hours after cerebral ischemia was produced in eight rats via permanent occlusion of one middle cerebral artery (MCA) with an intraluminal suture, MRI-CBF was measured over a 2.0-mm coronal slice using

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Hacioglu, Gokce, and Ali Gangal. "A Rate-1 Space-Time Diversity Method for Rotated 4-QAM Constellations." Wireless Personal Communications 64, no. 2 (2010): 211–23. http://dx.doi.org/10.1007/s11277-010-0180-8.

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Wolf, P. R., and R. G. Cook. "The TL region gene 37 encodes a Qa-1 antigen." Journal of Experimental Medicine 172, no. 6 (1990): 1795–804. http://dx.doi.org/10.1084/jem.172.6.1795.

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Of all the biochemically defined mouse MHC class I molecules, the Qa-1 antigens are the only ones for which a gene has not been identified. Recent evidence has suggested that Qa-1 antigens are functional class I molecules and can function as restriction elements for gamma/delta T cells. We have examined the relationship between Qa-1 and the product of gene 37, a presumed novel class I antigen encoded within the TL region. Immunoprecipitation and polyacrylamide gel electrophoresis analysis of the molecules reactive with anti-Qa-1 and anti-37 sera show that the Qa-1 molecule of Qa-1b (Qa-1.2) mo

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Wolf, P. R., and R. G. Cook. "The class I-b molecule Qa-1 forms heterodimers with H-2Ld and a novel 50-kD glycoprotein encoded centromeric to I-E beta." Journal of Experimental Medicine 181, no. 2 (1995): 657–68. http://dx.doi.org/10.1084/jem.181.2.657.

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Recent biochemical characterization of the T23-encoded Qa-1 molecule revealed an additional higher molecular mass species of 50 kD coprecipitated with the 48-kD Qa-1 molecule in H-2b and H-2d mouse strains. We now demonstrate that the 50-kD protein coprecipitated with Qa-1 is the class I-a antigen Ld in all H-2Ld-positive mouse strains examined. Furthers analyses of a panel of recombinants revealed that the 50-kD protein coprecipitated with Qa-1 in H-2b haplotype mouse strains is encoded or controlled by a gene centromeric to major histocompatibility complex class II I-E beta. We have designat

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Et. al., Mulyono,. "Implementation of the Internal Quality Assurance System at UIN Malang Indonesia." Turkish Journal of Computer and Mathematics Education (TURCOMAT) 12, no. 6 (2021): 941–49. http://dx.doi.org/10.17762/turcomat.v12i6.2372.

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This study aims to examine the implementation of the internal quality assurance system (IQAS) at the State Islamic University of Maulana Malik Ibrahim Malang Indonesia (called UIN Malang). This research uses qualitative methods, data obtained through interviews, document review and observation, and data analysis techniques using interactive analysis models. The results of the research can be concluded as follows: 1) The University established a Quality Assurance Institute (QAI) at the university level, the Quality Assurance Unit (QAU) at the Faculty level, Postgraduate Program, Language Develo

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Han, Su Chul, Jihun Kim, Min Cheol Han, et al. "Monitoring beam-quality constancy considering uncertainties associated with ionization chambers in Daily QA3 device." PLOS ONE 16, no. 2 (2021): e0246845. http://dx.doi.org/10.1371/journal.pone.0246845.

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This study evaluates the changes occurring in the X-ray energy of a linear accelerator (LINAC) using a Daily QA3 detector system. This is accomplished by comparing the Daily QA3 results against those obtained using a water phantom. The X-energy levels of a LINAC were monitored over a duration of 1 month using the Daily QA3 system. Moreover, to account for the uncertainty, the reproducibility of the Daily QA3 ionization-chamber results was assessed by performing repeated measurements (12 per day). Subsequently, the energy-monitoring results were compared with the energy-change results calculate

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Zhu, Weining, and Qian Yu. "Inversion of Chromophoric Dissolved Organic Matter From EO-1 Hyperion Imagery for Turbid Estuarine and Coastal Waters." Geoscience and Remote Sensing, IEEE Transactions on 51, no. 6 (2013): 3286–98. http://dx.doi.org/10.1109/tgrs.2012.2224117.

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The significant implication of chromophoric dissolved organic matter (CDOM) for water quality and biogeochemical cycle leads to an increasing need of CDOM monitoring in coastal regions. Current ocean-color algorithms are mostly limited to open-sea water and have high uncertainty when directly applied to turbid coastal waters. This paper presents a semianalytical algorithm, quasi-analytical CDOM algorithm (QAA-CDOM), to invert CDOM absorption from Earth Observing-1 (EO-1) Hyperion satellite images. This algorithm was developed from a widely used ocean-color algorithm QAA and our earlier extensi

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ZHANG, M., M. O'DONONGHUE, and M. V. BOOST. "Characterization of staphylococci contaminating automated teller machines in Hong Kong." Epidemiology and Infection 140, no. 8 (2011): 1366–71. http://dx.doi.org/10.1017/s095026881100207x.

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SUMMARYEnvironmental staphylococcal contamination was investigated by culture of 400 automated teller machines (ATMs). Isolates were characterized for antibiotic and antiseptic susceptibility, carriage of antiseptic resistance genes (QAC genes), and spa types. MRSA, which was similar to local clinical isolates, was present on two (0·5%) of the 62 (15·5%) ATMs that yielded Staphylococcus aureus. QAC genes were more common in coagulase-negative staphylococci (qacA/B 26·0%, smr 14%) than S. aureus (11·3% qacA/B, 1·6% smr). QAC-positive isolates had significantly higher minimum inhibitory concentr

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PAMBUDI, AFIEF DIAS, SUHARTONO TJONDRONEGORO, and HEROE WIJANTO. "Deteksi Automatis Skema Modulasi Sinyal OFDM menggunakan Ciri Statistik dan Klasifikasi PSO." ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika 3, no. 2 (2015): 133. http://dx.doi.org/10.26760/elkomika.v3i2.133.

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ABSTRAKPengenalan format modulasi dari sinyal yang dideteksi merupakan salah satu bahasan penting pada sistem intelligent receiver yang digunakan untuk aplikasi di bidang militer maupun komersial. Oleh karena itu, pada penelitian ini dilakukan klasifikasi skema modulasi pada sinyal OFDM yaitu QPSK, 16-QAM dan 64-QAM. Sinyal OFDM tersebut disimulasikan melewati kanal frequency selective fading dan additive white gaussian noise. Sistem klasifikasi yang dibuat menggunakan ekstraksi ciri statistik dan pengklasifikasi berupa diagram keputusan dengan threshold yang dioptimasi menggunakan algoritma p

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