keyword
MENU ▼
Read by QxMD icon Read
search

P(v-a)CO2

keyword
https://www.readbyqxmd.com/read/28503946/fractional-co2-laser-therapy-a-new-challenge-for-vulvovaginal-atrophy-in-postmenopausal-women
#1
G P Siliquini, V Tuninetti, V E Bounous, F Bert, N Biglia
OBJECTIVE: To evaluate the effects of CO2 laser in the treatment of vulvovaginal atrophy (VVA) in postmenopausal women. METHODS: VVA was assessed in 87 postmenopausal women (mean age 58.6 ± 6.9 years) before and after the treatment. The protocol consisted of three monthly treatments and included the treatment of vulva. Subjective measures included VAS (Visual Analog Scale) both for vaginal dryness and dyspareunia; DIVA (Day-by-day Impact of Vaginal Aging); a questionnaire on treatment satisfaction and one about the degree of pain during the procedure...
May 15, 2017: Climacteric: the Journal of the International Menopause Society
https://www.readbyqxmd.com/read/28502493/the-effect-of-maximal-vs-submaximal-exertion-on-postprandial-lipid-levels-in-individuals-with-and-without-coronary-heart-disease
#2
David M Aronov, Marina G Bubnova, Natalia V Perova, Alexander N Orekhov, Yuri V Bobryshev
BACKGROUND: Decisions about fat consumption and levels of physical activity are among the everyday choices we make in life and risk of coronary heart disease (CHD) can be affected by those choices. OBJECTIVE: The purpose of this study was to investigate the influence of a standard fat load combined with physical exertion of different intensities on the plasma lipid profile of CHD patients and CHD-free individuals. METHODS: This study looked at the influence of different intensities of physical exercise on postprandial lipid metabolism in 20 healthy men and 36 men with diagnosis of CHD...
March 2017: Journal of Clinical Lipidology
https://www.readbyqxmd.com/read/28492385/the-prognostic-value-of-central-venous-to-arterial-co2-difference-arterial-central-venous-o2-difference-ratio-in-septic-shock-patients-with-central-venous-o2-saturation-%C3%A2-80
#3
Huaiwu He, Yun Long, Dawei Liu, Xiaoting Wang, Bo Tang
BACKGROUND: It is a great challenge for physician to assess the relationship between O2 delivery and O2 consumption in septic shock patients with high ScvO2. Recently, the venous-to-arterial CO2 difference/arterial-central venous O2 difference ratio (P(v-a)CO2/C(a-v)O2) has shown potential for reflecting anaerobic metabolism. Therefore, we evaluated the value of using the P(v-a)CO2/C(a-v)O2 ratio to predict mortality and assess anaerobic metabolism in septic shock patients with high ScvO2 (≥ 80%)...
May 10, 2017: Shock
https://www.readbyqxmd.com/read/28455103/transcranial-doppler-ultrasonography-in-the-assessment-of-neurovascular-coupling-responses-to-cognitive-examination-in-healthy-controls-a-feasibility-study
#4
C A L Williams, R B Panerai, T G Robinson, V J Haunton
BACKGROUND: We tested the hypothesis that paradigms from the Addenbrooke's Cognitive Examination (ACE-III), including those that had not been studied using TCD previously (novel) versus those which had been (established), would elicit changes in CBF velocity (CBFv). NEW METHOD: Healthy subjects were studied with bilateral transcranial Doppler (TCD), beat-to-beat blood pressure (Finapres), continuous electrocardiogram (ECG), and end-tidal CO2 (nasal capnography)...
April 26, 2017: Journal of Neuroscience Methods
https://www.readbyqxmd.com/read/28452396/reversible-supracolloidal-self-assembly-of-cobalt-nanoparticles-to-hollow-capsids-and-their-superstructures
#5
Nonappa, Johannes S Haataja, Jaakko V I Timonen, Sami Malola, Peter Engelhardt, Nikolay Houbenov, Manu Lahtinen, Hannu Häkkinen, Olli Ikkala
The synthesis and spontaneous, reversible supracolloidal hydrogen bond-driven self-assembly of cobalt nanoparticles (CoNPs) into hollow shell-like capsids and their directed assembly to higher order superstructures is presented. CoNPs and capsids form in one step upon mixing dicobalt octacarbonyl (Co2 CO8 ) and p-aminobenzoic acid (pABA) in 1,2-dichlorobenzene using heating-up synthesis without additional catalysts or stabilizers. This leads to pABA capped CoNPs (core ca. 5 nm) with a narrow size distribution...
June 1, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28440060/a-practical-approach-in-bioreactor-scale-up-and-process-transfer-using-a-combination-of-constant-p-v-and-vvm-as-the-criterion
#6
Sen Xu, Linda Hoshan, Rubin Jiang, Balrina Gupta, Eric Brodean, Kristin O'Neill, T Craig Seamans, John Bowers, Hao Chen
Bioreactor scale-up is a critical step in the production of therapeutic proteins such as monoclonal antibodies (MAbs). With the scale-up criterion such as similar power input per volume or O2 volumetric mass transfer coefficient (kL a), adequate oxygen supply and cell growth can be largely achieved. However, CO2 stripping in the growth phase is often inadequate. This could cascade down to increased base addition and osmolality, as well as residual lactate increase and compromised production and product quality...
April 25, 2017: Biotechnology Progress
https://www.readbyqxmd.com/read/28435685/quantification-and-physiological-significance-of-the-rightward-shift-of-the-v-slope-during-incremental-cardiopulmonary-exercise-testing
#7
Hirotaka Nishijima, Kazuo Kondo, Kazuya Yonezawa, Hiroki Hashimoto, Masayuki Sakurai
BACKGROUND: Ventilatory anaerobic threshold (VAT) is frequently used as a measure of exercise tolerance, with the V-slope method being the standard; however, this needs to be visually determined. Over the years, we have observed that the V-slope itself often appears to shift rightward before the appearance of the VAT (RtShift: rightward shift of V-slope). This phenomenon has long been known to occur during the first 1-2 min of steady-state exercise and disappears thereafter; it is attributed to CO2 storage, presumably in active muscle...
2017: BMC Sports Science, Medicine and Rehabilitation
https://www.readbyqxmd.com/read/28396262/physiological-and-behavioral-flexibility-to-an-acute-co2-challenge-within-and-between-genotypes-in-rainbow-trout
#8
B Sadoul, N C Friggens, C Valotaire, L Labbé, V Colson, P Prunet, I Leguen
Adaptive capacities, governing the ability of animals to cope with an environmental stressor, have been demonstrated to be strongly dependent upon genetic factors. Two isogenic lines of rainbow trout, previously described for their sensitivity and resilience to an acute confinement challenge, were used in the present study to investigate whether adaptive capacities remain consistent when fish are exposed to a different type of challenge. For this purpose, the effects of a 4-hour hypercapnia (CO2 increase) challenge at concentrations relevant in aquaculture conditions are described for the two isogenic lines...
July 2017: Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology
https://www.readbyqxmd.com/read/28364680/assessment-of-macro-and-micro-oxygenation-parameters-during-fractional-fluid-infusion-a-pilot-study
#9
Marc-Olivier Fischer, Vincent Bonnet, Emmanuel Lorne, Jean-Yves Lefrant, Olivier Rebet, Benoît Courteille, Charlotte Lemétayer, Jean-Jacques Parienti, Jean-Louis Gérard, Jean-Luc Fellahi, Jean-Luc Hanouz
PURPOSE: The main goal of this study was to assess whether maximal fluid infusion improves both oxygen delivery (DO2) and micro-circulatory parameters during hemodilution. The secondary objective was to assess the ability of baseline micro-circulatory parameters to predict oxygen consumption (VO2) response following fluid infusion. MATERIALS AND METHODS: In a postoperative cardiac ICU, patients received repeated fluid infusion until stroke volume (SV) was maximized...
March 27, 2017: Journal of Critical Care
https://www.readbyqxmd.com/read/28359891/synthesis-characterization-and-antibacterial-activity-of-hybrid-chitosan-cerium-oxide-nanoparticles-as-a-bionanomaterials
#10
R P Senthilkumar, V Bhuvaneshwari, R Ranjithkumar, S Sathiyavimal, V Malayaman, B Chandarshekar
The hybrid chitosan cerium oxide nanoparticles were prepared for the first time by green chemistry approach using plant leaf extract. The intense peak observed around 292nm in the UV-vis spectrum indicate the formation of cerium oxide nanoparticles. The XRD pattern revealed that the hybrid chitosan-cerium oxide nanoparticles have a polycrystalline structure with cubic fluorite phase. The FTIR spectrum of prepared samples showed the formation of Ce-O bonds and chitosan main chains COC and CO. The FESEM image of hybrid chitosan cerium oxide nanoparticles revealed that the particles are spherical in shape with grains size varying from 23...
March 27, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28341290/the-cessation-of-breathing-in-the-chicken-embryo-during-cold-hypometabolism
#11
Ryoji Ide, Satoko Tomita Ide, Jacopo P Mortola
The avian embryo toward end-incubation combines gas exchange through the chorioallantoic membrane (CAM) and pulmonary ventilation (V˙E). The main experiments examined breathing activity during cold-hypometabolism. Chicken embryos close to hatching were prepared for simultaneous measurements of oxygen consumption ( [Formula: see text] ) and carbon dioxide production ( [Formula: see text] ; open-flow methodology) and breathing frequency (f; barometric technique). As ambient (Ta) and egg temperature (Tegg) dropped, breathing eventually ceased at ∼18°C, when [Formula: see text] and [Formula: see text] were 22-28% of the normothermic values...
March 21, 2017: Respiratory Physiology & Neurobiology
https://www.readbyqxmd.com/read/28331790/ultrathin-fluidic-laminates-for-large-area-fa%C3%A3-ade-integration-and-smart-windows
#12
Benjamin P V Heiz, Zhiwen Pan, Gerhard Lautenschläger, Christin Sirtl, Matthias Kraus, Lothar Wondraczek
Buildings represent more than 40% of Europe's energy demands and about one third of its CO2 emissions. Energy efficient buildings and, in particular, building skins have therefore been among the key priorities of international research agendas. Here, glass-glass fluidic devices are presented for large-area integration with adaptive façades and smart windows. These devices enable harnessing and dedicated control of various liquids for added functionality in the building envelope. Combining a microstructured glass pane, a thin cover sheet with tailored mechanical performance, and a liquid for heat storage and transport, a flat-panel laminate is generated with thickness adapted to a single glass sheet in conventional windows...
March 2017: Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
https://www.readbyqxmd.com/read/28325842/surface-changes-on-comet-67p-churyumov-gerasimenko-suggest-a-more-active-past
#13
M Ramy El-Maarry, O Groussin, N Thomas, M Pajola, A-T Auger, B Davidsson, X Hu, S F Hviid, J Knollenberg, C Güttler, C Tubiana, S Fornasier, C Feller, P Hasselmann, J-B Vincent, H Sierks, C Barbieri, P Lamy, R Rodrigo, D Koschny, H U Keller, H Rickman, M F A'Hearn, M A Barucci, J-L Bertaux, I Bertini, S Besse, D Bodewits, G Cremonese, V Da Deppo, S Debei, M De Cecco, J Deller, J D P Deshapriya, M Fulle, P J Gutierrez, M Hofmann, W-H Ip, L Jorda, G Kovacs, J-R Kramm, E Kührt, M Küppers, L M Lara, M Lazzarin, Z-Yi Lin, J J Lopez Moreno, S Marchi, F Marzari, S Mottola, G Naletto, N Oklay, A Pommerol, F Preusker, F Scholten, X Shi
The Rosetta spacecraft spent ~2 years orbiting comet 67P/Churyumov-Gerasimenko, most of it at distances that allowed surface characterization and monitoring at submeter scales. From December 2014 to June 2016, numerous localized changes were observed, which we attribute to cometary-specific weathering, erosion, and transient events driven by exposure to sunlight and other processes. While the localized changes suggest compositional or physical heterogeneity, their scale has not resulted in substantial alterations to the comet's landscape...
March 21, 2017: Science
https://www.readbyqxmd.com/read/28303943/increased-chemical-weathering-during-the-deglacial-to-mid-holocene-summer-monsoon-intensification
#14
Pavan Miriyala, N P Sukumaran, B Nagender Nath, P B Ramamurty, A V Sijinkumar, B Vijayagopal, V Ramaswamy, Tyson Sebastian
Chemical weathering and the ensuing atmospheric carbon dioxide consumption has long been considered to work on geological time periods until recently when some modelling and natural records have shown that the weathering-related CO2 consumption can change at century to glacial-interglacial time scale. Last glacial to interglacial transition period is a best test case to understand the interplay between Pco2-temperature-chemical weathering when a pulse of rapid chemical weathering was initiated. Here we show, from a high resolution 54 ka record from the Andaman Sea in the northern Indian Ocean, that the chemical weathering responds to deglacial to mid-Holocene summer monsoon intensification in the Myanmar watersheds...
March 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28290822/-immunological-analysis-of-human-atherosclerotic-plaques-in-ex-vivo-culture-system
#15
D A Vorobyova, A M Lebedev, M S Vagida, O I Ivanova, E I Felker, V N Gontarenko, A V Shpektor, L B Margolis, E Yu Vasilieva
THE AIM OF THE STUDY: to analyze the dynamics of lymphocytic composition of human atherosclerotic plaques in ex vivo culture system. MATERIALS AND METHODS: The study included 15 atherosclerotic plaques obtained from patients who underwent carotid endarterectomy. Plaques were cultured as ring-shaped explants on collagen rafts in culture medium of special composition in CO2 incubator according to the previously developed technique. On day 0, and also on the 4th and 19th days of culture we extracted cells from plaque explants and analyzed B- and T-lymphocytic content of the tissue, as well as the percentage of CD16+ natural killer (NK) cells, using multichromatic flow cytometry...
December 2016: Kardiologiia
https://www.readbyqxmd.com/read/28276551/organic-inorganic-hybrid-photocatalyst-for-carbon-dioxide-reduction
#16
Dong-Il Won, Jong-Su Lee, Ha-Yeon Cheong, Minji Cho, Won-Jo Jung, Ho-Jin Son, Chyongjin Pac, Sang Ook Kang
Efficient hybrid photocatalysts for carbon dioxide reduction were developed from dye-sensitized TiO2 nanoparticles and their catalytic performance was optimized by ternary organic/inorganic components. Thus, the hybrid system consists of (E)-2-cyano-3-(5'-(5''-(p-(diphenylamino)phenyl)thiophen-2''-yl)thiophen-2'-yl)-acrylic acid as a sensitizer and fac-[Re(4,4'-bis(diethoxyphosphorylmethyl)-2,2'-bipyridine)(CO)3Cl] as a reduction catalyst (ReP), both of which have been fixed onto TiO2 semiconductors (s-TiO2, h-TiO2, d-TiO2)...
March 9, 2017: Faraday Discussions
https://www.readbyqxmd.com/read/28276547/electrochemical-co2-reduction-with-low-overpotential-by-a-poly-4-vinylpyridine-electrode-for-application-to-artificial-photosynthesis
#17
Hohyun Jeong, Myung Jong Kang, Hyeyeong Jung, Young Soo Kang
Pyridine molecules have been used as a catalyst to reduce the activation energy of the CO2 reduction reaction. It has been reported that CO2 is reduced by pyridine catalysts at low overpotential around -0.58 V vs. SCE. Poly(4-vinylpyridine), which has pyridine functional groups shows similar catalytic properties to reduce CO2 at low overpotential like pyridinium catalysts. Different thickness of P(4-VP) coated Pt electrodes were analyzed to determine the catalytic properties for CO2 reduction. Cyclic voltammetry, chronoamperometry and electrochemical impedance spectroscopy methods showed the catalytic CO2 reduction properties of a P(4-VP)/Pt electrode...
March 9, 2017: Faraday Discussions
https://www.readbyqxmd.com/read/28263885/effects-of-aerial-hypoxia-and-temperature-on-pulmonary-breathing-pattern-and-gas-exchange-in-the-south-american-lungfish-lepidosiren-paradoxa
#18
Glauber S F da Silva, Daniela A D N Ventura, Lucas A Zena, Humberto Giusti, Mogens L Glass, Wilfried Klein
The South American lungfish Lepidosiren paradoxa is an obligatory air-breathing fish possessing well-developed bilateral lungs, and undergoing seasonal changes in its habitat, including temperature changes. In the present study we aimed to evaluate gas exchange and pulmonary breathing pattern in L. paradoxa at different temperatures (25 and 30°C) and different inspired O2 levels (21, 12, 10, and 7%). Normoxic breathing pattern consisted of isolated ventilatory cycles composed of an expiration followed by 2...
March 3, 2017: Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology
https://www.readbyqxmd.com/read/28244940/elevated-mean-airway-pressure-and-central-venous-pressure-in-the-first-day-of-mechanical-ventilation-indicated-poor-outcome
#19
Yun Long, Longxiang Su, Qing Zhang, Xiang Zhou, Hao Wang, Na Cui, Wenzhao Chai, Xiaoting Wang, Xi Rui, Dawei Liu
OBJECTIVES: The relationship between respiratory mechanical parameters and hemodynamic variables remains unclear. This study was performed to determine whether mean airway pressure and central venous pressure in the first day of mechanical ventilation are associated with patient outcomes. DESIGN: Retrospective first 24-hour comparison during ICU stay. SETTING: The Department of Critical Care Medicine of Peking Union Medical College Hospital...
May 2017: Critical Care Medicine
https://www.readbyqxmd.com/read/28239971/characterization-of-n-methylated-amino-acids-by-gc-ms-after-ethyl-chloroformate-derivatization
#20
B Sudarshana Reddy, V Naresh Chary, P Pavankumar, S Prabhakar
Methylation is an essential metabolic process in the biological systems, and it is significant for several biological reactions in living organisms. Methylated compounds are known to be involved in most of the bodily functions, and some of them serve as biomarkers. Theoretically, all α-amino acids can be methylated, and it is possible to encounter them in most animal/plant samples. But the analytical data, especially the mass spectral data, are available only for a few of the methylated amino acids. Thus, it is essential to generate mass spectral data and to develop mass spectrometry methods for the identification of all possible methylated amino acids for future metabolomic studies...
August 2016: Journal of Mass Spectrometry: JMS
keyword
keyword
85492
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"