keyword
MENU ▼
Read by QxMD icon Read
search

electrolyte and acid-base

keyword
https://www.readbyqxmd.com/read/28544611/detection-of-nitric-oxide-from-living-cells-using-polymeric-zinc-organic-framework-derived-zinc-oxide-composite-with-conducting-polymer
#1
Min-Yeong Kim, Malenahalli Halappa Naveen, Nanjanagudu Ganesh Gurudatt, Yoon-Bo Shim
Sensitive and selective detection of nitric oxide (NO) in the human body is crucial since it has the vital roles in the physiological and pathological processes. This study reports a new type of electrochemical NO biosensor based on zinc-dithiooxamide framework derived porous ZnO nanoparticles and polyterthiophene-rGO composite. By taking advantage of the synergetic effect between ZnO and poly(TTBA-rGO) (TTBA = 3'-(p-benzoic acid)-2,2':5',2″-terthiophene, rGO = reduced graphene oxide) nanocomposite layer, the poly(TTBA-rGO)/ZnO sensor probe displays excellent electrocatalytic activity and explores to detect NO released from normal and cancer cell lines...
May 22, 2017: Small
https://www.readbyqxmd.com/read/28537626/highly-transparent-supercapacitors-based-on-zno-mno2-nanostructures
#2
M A Borysiewicz, M Ekielski, Z Ogorzałek, M Wzorek, J Kaczmarski, T Wojciechowski
The recent rapid development of transparent electronics, notably displays and control circuits, requires the development of highly transparent energy storage devices, such as supercapacitors. The devices reported to date utilize carbon-based electrodes for high performance, however at the cost of their low transparency around 50%, insufficient for real transparent devices. To overcome this obstacle, in this communication highly transparent supercapacitors were fabricated based on ZnO/MnO2 nanostructured electrodes...
May 24, 2017: Nanoscale
https://www.readbyqxmd.com/read/28535065/silica-polymerization-from-supersaturated-dilute-aqueous-solutions-in-the-presence-of-alkaline-earth-salts
#3
Marina Kley, Andreas Kempter, Volodymyr Boyko, Klaus Huber
The early stages of silica polymerization in aqueous solution proceeds according to a mechanism based on three steps: nucleation, particle growth and agglomeration of the particles. Application of time-resolved static and dynamic light scattering as a powerful in-situ technique in combination with spectrophotometric analysis of the monomer consumption based on the molybdenum blue method was carried out to further investigate this 3-step process. Experiments were carried out at four different initial silicic acid contents covering a range between 350 ppm and 750 ppm in the presence of either 10 mM NaCl or 5 mM of a mixture of CaCl2 and MgCl2...
May 23, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28524071/flexible-low-cost-sensor-based-on-electrolyte-gated-carbon-nanotube-field-effect-transistor-for-organo-phosphate-detection
#4
Vijay Deep Bhatt, Saumya Joshi, Markus Becherer, Paolo Lugli
A flexible enzymatic acetylcholinesterase biosensor based on an electrolyte-gated carbon nanotube field effect transistor is demonstrated. The enzyme immobilization is done on a planar gold gate electrode using 3-mercapto propionic acid as the linker molecule. The sensor showed good sensing capability as a sensor for the neurotransmitter acetylcholine, with a sensitivity of 5.7 μA/decade, and demonstrated excellent specificity when tested against interfering analytes present in the body. As the flexible sensor is supposed to suffer mechanical deformations, the endurance of the sensor was measured by putting it under extensive mechanical stress...
May 18, 2017: Sensors
https://www.readbyqxmd.com/read/28523755/asymmetric-supercapacitors-based-on-rgo-pmo12-as-a-positive-and-rgo-pw12-as-a-negative-electrode
#5
Deepak Dubal, Nilesh Chodankar, Ajayan Vinu, Do-Heyoung Kim, Pedro Gomez-Romero
Nanofabrication via "bottom-up" approach of hybrid electrode materials into well-defined architecture is essential for the next generation miniaturized energy storage devices. This paper describes the design and fabrication of reduced graphene oxide (rGO)/polyoxometalates (POMs) based hybrid electrode materials and their successful exploitation for asymmetric supercapacitor. Firstly, the redox active nanoclusters of POMs (phosphomolybdic acid (PMo12) and phosphotungstic acid (PW12)) are uniformly decorated on the surface of rGO nanosheets to take full advantage of both charge-storing mechanisms (faradaic from POMs and electric double layer from rGO)...
May 18, 2017: ChemSusChem
https://www.readbyqxmd.com/read/28521999/hyaluronan-random-coils-in-electrolyte-solutions-a-molecular-dynamics-study
#6
Marek Ingr, Eva Kutálková, Josef Hrnčiřík
A computational method of modeling random coils of hyaluronan was developed based on the molecular-dynamics simulations. An oligosaccharide of 48 monosaccharide units was equilibrated within a 70-100ns simulation and randomly chosen pieces of this molecule from different simulation frames were combined to constitute a long polysaccharide chain, both for hyaluronan and its non-ionic analog containing glucose instead of glucuronic acid. The dihedral angles of the glycoside connections of the pieces obeyed the statistics deduced from the simulation...
August 15, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28514836/oxidation-of-organic-contaminant-in-a-self-driven-electro-natural-maghemite-peroxydisulfate-system-efficiency-and-mechanism
#7
Suding Yan, Weihui Xiong, Shuya Xing, Yueqi Shao, Rui Guo, Hui Zhang
Electro-assisted iron-mediated persulfate (PS) activation process has been successfully employed to oxidize organic contaminant. However, a majority of iron-based catalysts used for PS activation was synthesized through complicated or demanding procedures and may have potential risks on environment during the preparation process. Herein, natural maghemite (NM) which is abundant on the earth was employed to activate peroxydisulfate (PDS) in an electrolytic cell. The voltage was provided by microbial fuel cell (MFC) instead of external power as reported in the previous studies, so as to establish a self-driven electro/natural maghemite/PDS system (MFC/NM/PDS) for the oxidation of acid orange 7 (AO7)...
May 12, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28508567/p-doped-moo3-x-nanosheets-as-efficient-and-stable-electrocatalysts-for-hydrogen-evolution
#8
Ling Li, Ting Zhang, Junqing Yan, Xuediao Cai, Shengzhong Frank Liu
A P doped MoO3-x nanocomposite material with rich oxygen vacancies is successfully fabricated by a two-step intercalation method, which presents superior activity for the hydrogen evolution reaction with low overpotential and fast electron transfer. In 0.5 m H2 SO4 , it displays an overpotential of 166 mV for driving the current density of 10 mA cm(-2) . Moreover, it also shows a good catalytic stability in the electrolytes with different pH, 0.5 m H2 SO4 (strong acid), 0.5 m Na2 SO4 (neutral solution), and 0...
May 16, 2017: Small
https://www.readbyqxmd.com/read/28507663/molecular-engineering-and-sequential-cosensitization-for-preventing-the-trade-off-effect-with-photovoltaic-enhancement
#9
Weiwei Zhang, Yongzhen Wu, Xin Li, Erpeng Li, Xiongrong Song, Huiyun Jiang, Chao Shen, Hao Zhang, He Tian, Wei-Hong Zhu
In dye-sensitized solar cells (DSSCs), it is essential to use rational molecular design to obtain promising photosensitizers with well-matched energy levels and narrow optical band gaps. However, the "trade-off" effect between the photocurrent and photovoltage is still a challenge. Here we report four benzoxidazole based D-A-π-A metal-free organic dyes (WS-66, WS-67, WS-68 and WS-69) with different combinations of π-spacer units and anchoring-acceptor groups. Either extending the π-spacer or enhancing the electron acceptor can efficiently modulate the molecular energy levels, leading to a red-shift in the absorption spectra...
March 1, 2017: Chemical Science
https://www.readbyqxmd.com/read/28501971/electrolyte-and-acid-base-disturbances-in-end-stage-liver-disease-a-physiopathological-approach
#10
REVIEW
José Víctor Jiménez, Diego Luis Carrillo-Pérez, Rodrigo Rosado-Canto, Ignacio García-Juárez, Aldo Torre, David Kershenobich, Eduardo Carrillo-Maravilla
Electrolyte and acid-base disturbances are frequent in patients with end-stage liver disease; the underlying physiopathological mechanisms are often complex and represent a diagnostic and therapeutic challenge to the physician. Usually, these disorders do not develop in compensated cirrhotic patients, but with the onset of the classic complications of cirrhosis such as ascites, renal failure, spontaneous bacterial peritonitis and variceal bleeding, multiple electrolyte, and acid-base disturbances emerge. Hyponatremia parallels ascites formation and is a well-known trigger of hepatic encephalopathy; its management in this particular population poses a risky challenge due to the high susceptibility of cirrhotic patients to osmotic demyelination...
May 13, 2017: Digestive Diseases and Sciences
https://www.readbyqxmd.com/read/28501489/hydroxyethyl-starch-130-0-4-compared-with-0-9-nacl-administered-to-greyhounds-with-haemorrhagic-shock
#11
Duana McBride, Anthea L Raisis, Giselle Hosgood, Lisa Smart
OBJECTIVE: To determine the cardiovascular and acid-base effects of 6% hydroxyethyl starch (HES) 130/0.4 and 0.9% sodium chloride (NaCl) administered to anaesthetized greyhounds with haemorrhagic shock. STUDY DESIGN: Prospective, experimental, complete randomized block design. ANIMALS: Twelve healthy adult greyhounds. METHODS: After 60 minutes of isoflurane anaesthesia, 48 mL kg(-1) of blood was removed to induce hypotension...
March 6, 2017: Veterinary Anaesthesia and Analgesia
https://www.readbyqxmd.com/read/28501123/attenuation-of-intestinal-ischemia-reperfusion-injury%C3%A2-by-%C3%AE-alanine-a-potentially-glycine-receptor-mediated-effect
#12
Lisa Brencher, Rabea Verhaegh, Michael Kirsch
BACKGROUND: Acute mesenteric ischemia is often caused by embolization of the mesenteric arterial circulation. Coherent intestinal injury due to ischemia and following reperfusion get visible on macroscopic and histologic level. In previous studies, application of glycine caused an ameliorated intestinal damage after ischemia-reperfusion in rats. Because we speculated that glycine acted here as a signal molecule, we investigated whether the glycine-receptor agonist β-alanine evokes the same beneficial effect in intestinal ischemia-reperfusion...
May 1, 2017: Journal of Surgical Research
https://www.readbyqxmd.com/read/28498664/atmospheric-aqueous-aerosol-surface-tensions-isotherm-based-modeling-and-biphasic-microfluidic-measurements
#13
Hallie C Boyer, Cari S Dutcher
Surface properties of atmospheric aerosol particles are crucial for accurate assessments of the fates of liquid particles in the atmosphere. Surface tension directly influences predictions of particle activation to clouds, as well as indirectly acts as a proxy for chemical surface partitioning. Challenges to accounting for surface effects arise from surface tension dependence on solution concentration and the presence of complex aqueous mixtures in aerosols, including both surface-active organic solutes and inorganic electrolytes...
May 12, 2017: Journal of Physical Chemistry. A
https://www.readbyqxmd.com/read/28497085/evaluation-of-water-and-electrolytes-disorders-in-severe-acute-diarrhea-patients-treated-by-who-protocol-in-eight-large-hospitals-in-tehran-a-nephrology-viewpoint
#14
Alireza Soleimani, Fatemeh Foroozanfard, Mohammad Reza Tamadon
Introduction: The most common cause of death from diarrhea is the shock caused by dehydration, electrolytes and acid-base disorders. Objectives: The aim of this study was to evaluate water and electrolytes disorders in diarrhea patients after treating severe acute diarrhea. Patients and Methods: In this study we used a historical cohort and studied patients who were hospitalized due to acute diarrhea and were similarly treated for dehydration and water and electrolyte disorders as recommended by the World Health Organization (WHO) guideline...
2017: Journal of Renal Injury Prevention
https://www.readbyqxmd.com/read/28491446/severe-muscle-fasciculations-and-tremor-in-a-cat-with-hypochloraemic-metabolic-alkalosis-secondary-to-duodenal-obstruction
#15
Alison Jukes, Marcus Gunew, Rhett Marshall
CASE SUMMARY: An 18-month-old, female spayed, Australian Mist cat presented with a 24 h history of muscle tremors and inappetence progressing to collapse with generalised muscle fasciculations. The cat was diagnosed with a hypochloraemic metabolic alkalosis due to a duodenal foreign body found to be a trichobezoar at coeliotomy. The cat made a complete recovery after enterotomy to remove the trichobezoar, with cessation of neuromuscular clinical signs and normalisation of its electrolyte and acid-base imbalances...
January 2017: JFMS Open Rep
https://www.readbyqxmd.com/read/28488060/arbuscular-mycorrhizal-fungi-and-pseudomonas-in-reduce-drought-stress-damage-in-flax-linum-usitatissimum-l-a-field-study
#16
Saeedeh Rahimzadeh, Alireza Pirzad
Drought stress, which is one of the most serious world environmental threats to crop production, might be compensated by some free living and symbiotic soil microorganisms. The physiological response of flax plants to inoculation with two species of arbuscular mycorrhizal (AM) fungi (Funneliformis mosseae or Rhizophagus intraradices) and a phosphate solubilizing bacterium (Pseudomonas putida P13; PSB) was evaluated under different irrigation regimes (irrigation after 60, 120, and 180 mm of evaporation from Class A pan as well-watered, mild, and severe stress, respectively)...
May 10, 2017: Mycorrhiza
https://www.readbyqxmd.com/read/28485837/characterization-of-the-analytic-performance-of-an-electrochemical-point-of-care-meter-for-measuring-%C3%AE-hydroxybutyrate-concentration-in-blood-and-plasma-from-periparturient-dairy-cattle
#17
Ameer A Megahed, Mark W H Hiew, Jonathan R Townsend, Peter D Constable
BACKGROUND: The Precision Xtra electrochemical meter is widely used to measure blood β-hydroxybutyrate concentration (BHBb) in dairy cattle. The meter uses an algorithm optimized for human blood that assumes the HCT in cattle is the same as in people, and that intra-erythrocyte β-hydroxybutyrate (BHBe) and plasma β-hydroxybutyrate (BHBp) concentration are equivalent. OBJECTIVES: The first objective was to characterize the analytic performance of the meter for measuring BHBb and BHBp in dairy cattle...
May 9, 2017: Veterinary Clinical Pathology
https://www.readbyqxmd.com/read/28485581/electrochemical-sensing-of-neurotoxic-agents-based-on-their-electron-transfer-promotion-effect-on-an-au-electrode
#18
Hiroshi Shimada, Shiori Noguchi, Masahiro Yamamoto, Katsuhiko Nishiyama, Yusuke Kitamura, Toshihiro Ihara
An electrochemical molecular sensor based on a new principle is reported. Nereistoxin (NRT, 4-N,N-dimethylamino-1,2-dithiolane), a naturally occurring neurotoxin (nicotinic acetylcholine receptor agonist), was adsorbed on an Au electrode via Au-S covalent bonding and accelerated the electron transfer between the electrode and the marker, ferricyanide anion. The contrast between the electrochemical responses obtained with the bare and NRT-modified Au electrodes was more pronounced at a low ionic strength of the supporting electrolyte, KCl...
May 16, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28471685/structural-investigations-on-lithium-doped-protic-and-aprotic-ionic-liquids
#19
Promit Ray, Thomas Vogl, Andrea Balducci, Barbara Kirchner
Solutions of lithium bis(trifluoromethanesulfonyl)imide (LiNTf2), in four different [NTf2](-)-based ionic liquids, are extensively investigated as potential electrolytes for lithium-ion batteries. Solvation of the [Li](+) ions in the ionic liquids and its impact on their physicochemical properties are studied herein with the aid of molecular dynamics simulations. The cationic components of the investigated liquids were systematically varied so as to individually evaluate effects of specific structural changes; increase in ring size, the addition of an alkyl chain and absence of an acidic proton, on the solvation and mobility of the [Li](+) cations...
May 12, 2017: Journal of Physical Chemistry. B
https://www.readbyqxmd.com/read/28470638/-management-of-massive-intraoperative-blood-loss-using-a-case-study
#20
Andreas Pape, Angelo Ippolito, Joanna Warszawska, Florian Raimann, Kai Zacharowski
Massive intraoperative bleeding is a major and potentially life-threatening complication during surgical procedures. The lethal triade of hemorrhagic shock with metabolic acidosis, hypothermia and coagulopathy enhances bleeding tendency. Avoiding this vitious circle requires a well-structured and standardized procedure. Primary goals include the maintenance of adequate tissue oxygenation, restauration of proper coagulatory function, normothermia and homeostasis of acid-base and electrolyte balance. In the present article, these therapeutic goals and their pathophysiological background are illustrated with a clinical case example...
April 2017: Anästhesiologie, Intensivmedizin, Notfallmedizin, Schmerztherapie: AINS
keyword
keyword
94125
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"