keyword
MENU ▼
Read by QxMD icon Read
search

Water electrolytes

keyword
https://www.readbyqxmd.com/read/28816431/carbon-nanotubes-arranged-as-smart-interfaces-in-lipid-langmuir-blodgett-films-enhancing-the-enzymatic-properties-of-penicillinase-for-biosensing-applications
#1
Fabio Scholl, Paulo Morais, Rayla Gabriel, Michael J Schöning, Jose Roberto Siqueira, Luciano Caseli
In this paper, carbon nanotubes (CNTs) were incorporated in penicillinase-phospholipid Langmuir and Langmuir-Blodgett (LB) films to enhance the enzyme catalytic properties. Adsorption of the penicillinase and CNTs at dimyristoylphosphatidic acid (DMPA) monolayers at the air-water interface was investigated by surface pressure-area isotherms, vibrational spectroscopy and Brewster angle microscopy. The floating monolayers were transferred to solid supports through the LB technique, forming mixed DMPA-CNTs-PEN films, which were investigated by quartz crystal microbalance, vibrational spectroscopy, and atomic force microscopy...
August 17, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28816050/coarse-grained-model-of-the-dynamics-of-electrolyte-solutions
#2
Marat Andreev, Alexandros Chremos, Juan de Pablo, Jack F Douglas
Ion-specific solvation has fundamental implications in biochemistry, and the thermodynamics and dynamics of aqueous salt solutions have correspondingly been investigated intensively. Nonetheless, there are fundamental unresolved issues in modeling the dynamics of aqueous salt solutions and the related problem of polymers dissolved in these solutions. In particular, experiments show that the self-diffusion coefficient, D, of water molecules in electrolyte solutions can be either enhanced or suppressed by particular salts having the same valence where the observed changes correlate with the Hofmeister series governing the relative solubility of proteins and water-soluble polymers in the same salt solutions...
August 17, 2017: Journal of Physical Chemistry. B
https://www.readbyqxmd.com/read/28810615/detecting-serum-and-urine-metabolic-profile-changes-of-ccl4-liver-fibrosis-in-rats-at-12-weeks-based-on-gas-chromatography-mass-spectrometry
#3
Jiarong Gao, Xiu-Juan Qin, Hui Jiang, Jin-Feng Chen, Ting Wang, Ting Zhang, Shuang-Zhi Xu, Jun-Mei Song
Liver fibrosis is caused by liver injury induced by a number of chronic liver diseases, including schistosome infection, hepatitis infection, metabolic disease, alcoholism and cholestasis. The tissue damage occurring after injury or inflammation of the liver is a reversible lesion; however, liver fibrosis has become a worldwide problem and poses a threat to human health. The development of an effective drug for the prevention and treatment of liver fibrosis is ongoing and uses information from different occurrences of liver fibrosis...
August 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28809103/a-chiral-pedot-based-enantioselective-electrode-modification-material-for-chiral-electrochemical-sensing-mechanism-and-model-of-chiral-recognition
#4
Liqi Dong, Youshan Zhang, Xuemin Duan, Xiaofei Zhu, Hui Sun, Jingkun Xu
The development of electrochemical methods for enantioselective recognition is a focus of research in pharmaceuticals and biotechnology. In this study, a pair of water-soluble chiral 3,4-ethylenedioxythiophene (EDOT) derivatives-(R)-2'-hydroxymethyl-3,4-ethylenedioxythiophene ((R)-EDTM) and (S)-2'-hydroxymethyl-3,4-ethylenedioxythiophene ((S)-EDTM)-were synthesized and electrodeposited on the surface of a glassy carbon electrode (GCE) via current-time (I-t) polymerization in an aqueous LiClO4 electrolyte. These chiral PEDOT polymers were used to fabricate chiral sensors and to investigate the enantioselective recognition of D-/L-3,4-dihydroxyphenylalanine, D-/L-tryptophan and (R)-/(S)-propranolol enantiomers, respectively...
August 15, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28806046/electrolytes-sodium-disorders
#5
Michael M Braun, Megan Mahowald
Sodium disorders (ie, hyponatremia, hypernatremia) are common electrolyte disturbances in clinical medicine and are associated with increased rates of morbidity and mortality. Etiologies of hyponatremia are classified into four categories. The first is pseudohyponatremia, in which the sodium level is low due to hyperproteinemia, hyperlipidemia, or hyperglycemia. The other three categories are based on overall patient fluid status and include hypovolemic (commonly due to fluid loss), hypervolemic (commonly due to fluid retention from heart failure, cirrhosis, or renal failure), and euvolemic (most often because of syndrome of inappropriate secretion of antidiuretic hormone)...
August 2017: FP Essentials
https://www.readbyqxmd.com/read/28805369/solid-state-sensor-for-simultaneous-measurement-of-total-alkalinity-and-ph-of-seawater
#6
Ellen M Briggs, Sergio Sandoval, Ahmet Erten, Yuichiro Takeshita, Andrew C Kummel, Todd R Martz
A novel design is demonstrated for a solid state, reagent-less sensor capable of rapid and simultaneous measurement of pH and Total Alkalinity (AT) using ion sensitive field effect transistor (ISFET) technology to provide a simplified means of characterization of the aqueous carbon dioxide system through measurement of two "master variables": pH and AT. ISFET-based pH sensors that achieve 0.001 precision are widely used in various oceanographic applications. A modified ISFET is demonstrated to perform a nL-scale acid-base titration of AT in under 40 s...
August 14, 2017: ACS Sensors
https://www.readbyqxmd.com/read/28801072/irinotecan-chemotherapy-induced-intestinal-oxidative-stress-underlying-causes-of-disturbed-mucosal-water-and-electrolyte-transport
#7
Kaïs Rtibi, Slimen Selmi, Dhekra Grami, Hichem Sebai, Mohamed Amri, Lamjed Marzouki
Irinotecan, a chemotherapy drug, can cause acute diarrhea immediately after administration. Hence, the present study was designed to investigate the gastrointestinal (GI) disturbances after an intraperitoneal (IP) administration of irinotecan in rats.Twenty Wistar rats were separated into two groups of ten. Group A was considered as a control group (NaCl, 0.9%). Group B was treated with irinotecan at a single dose of 200mgkg(-1). The rats were observed for defecation. For the enteropooling test, the animals were sacrificed by decapitation 1h post-treatment...
July 23, 2017: Pathophysiology: the Official Journal of the International Society for Pathophysiology
https://www.readbyqxmd.com/read/28799330/imaging-dynamic-collision-and-oxidation-of-single-silver-nanoparticles-at-the-electrode-solution-interface
#8
Rui Hao, Yunshan Fan, Bo Zhang
The electrochemical interface is an ultrathin interfacial region between the electrode surface and the electrolyte solution and is often characterized by numerous dynamic processes, such as solvation and desolvation, heterogeneous electron transfer, molecular adsorption and desorption, diffusion, and surface rearrangement. Many of these processes are driven and modulated by the presence of a large interfacial potential gradient. The study and better understanding of the electrochemical interface is important for designing better electrochemical systems where their applications may include batteries, fuel cells, electrocatalytic water splitting, corrosion protection, and electroplating...
August 11, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28799261/serum-osmolarity-in-male-patients-with-bipolar-disorder-manic-episode
#9
Tevfik Kalelioglu, Nesrin Karamustafalioglu, Abdullah Genc, Murat Kocabiyik
Imbalance of water and electrolyte homeostasis has been suggested to be associated with the acute episodes of bipolar disorder. In this study we aimed to investigate, for the first time, the serum osmolarity in bipolar disorder manic episode. A total of 68 bipolar inpatients in manic episode and 60 age-gender matched healthy controls were included in the study. Serum osmolarity was calculated from Sodium (Na(+) ), glucose and blood urea nitrogen (BUN) according to formula of (2 × Na(+) ) + (BUN/2.8) + (Glucose/18)...
August 10, 2017: Experimental Physiology
https://www.readbyqxmd.com/read/28798479/real-time-and-tunable-substrate-for-surface-enhanced-raman-spectroscopy-by-synthesis-of-copper-oxide-nanoparticles-via-electrolysis
#10
Behzad Sardari, Meriç Özcan
Here we show the capability of copper oxide (CuO) nanoparticles formed on copper (Cu) electrodes by the electrolysis as a real time active substrate for surface enhanced Raman scattering (SERS). We have experimentally found that using just the ultra pure water as the electrolyte and the Cu electrodes, ions are extracted from the copper anode form copper oxide nanoparticles on the anode surface in matter of minutes. Average particle size on the anode reaches to 100 nm in ninety seconds and grows to about 300 nm in five minutes...
August 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28797976/physiological-mechanisms-of-water-and-electrolyte-disturbances-following-transsphenoidal-pituitary-surgery
#11
Evan T Blair, John S Clemmer, H Louis Harkey, Robert L Hester, W Andrew Pruett
BACKGROUND: Disturbances in water and electrolyte homeostasis are common following transsphenoidal surgery. These disorders are variable and unpredictable, increasing patient risk and complicating postsurgical treatment. Clinically, it is generally accepted that damage to the pituitary is the etiology, but the mechanisms behind the response variability and underlying pathophysiology remains unknown. OBJECTIVE: To test the hypothesis that changing the degree of damage to the pituitary stalk produces a spectrum of water and electrolyte disturbance along which all presentations of postsurgical water and electrolyte disturbances can be identified...
August 7, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28796478/spectroscopic-evidence-of-size-dependent-buffering-of-interfacial-ph-by-cation-hydrolysis-during-co2-electroreduction
#12
Onagie Ayemoba, Angel Cuesta
The nature of the electrolyte cation is known to affect the Faradaic efficiency and selectivity of CO2 electroreduction. Singh et al. (J. Am. Chem. Soc. 2016, 138, 13006-13012) recently attributed this effect to the buffering ability of cation hydrolysis at the electrical double layer. According to them, the pKa of hydrolysis decreases close to the cathode due to the polarization of the solvation water molecules sandwiched between the cation's positive charge and the negative charge on the electrode surface...
August 10, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28795175/x-ray-reflectivity-reveals-ionic-structure-at-liquid-crystal-aqueous-interfaces
#13
James E Hallett, Dominic W Hayward, Thomas Arnold, Paul Bartlett, Robert M Richardson
Here X-ray reflectivity has been used to determine the structure of liquid crystal monolayers for different cyanobiphenyl homologues supported on aqueous solutions of two different salt species. Sodium iodide induces homeotropic ordering for all of the monolayer forming liquid crystal homologues studied here, and forms a Stern layer of iodide ions at the liquid crystal cyano headgroup, similar to the case of lipids or surfactants supported on electrolyte solutions. The liquid crystal headgroups were also found to penetrate into the water surface when binding with iodide ions...
August 10, 2017: Soft Matter
https://www.readbyqxmd.com/read/28794928/silicon-and-water-deficit-stress-differentially-modulate-physiology-and-ultrastructure-in-wheat-triticum-aestivum-l
#14
Ling Xu, Faisal Islam, Basharat Ali, Zengfei Pei, Juanjuan Li, Muhammad Awais Ghani, Weijun Zhou
Plants combat drought stress by coordinating various metabolic enzymes, and endogenous phytohormones, such as indole acetic acid (IAA) and abscisic acid (ABA). In the present study, 37-day-old wheat seedlings were subjected to the Hoagland solution with 20% PEG for 7 days (to create the artificial osmotic stress environment) in the greenhouse, and were supplemented with an optimized concentration (1.0 mM) of silicon (Si) to alleviate the negative effects of former stress on physiological, biochemical and phytohormones contents...
August 2017: 3 Biotech
https://www.readbyqxmd.com/read/28794292/cross-linked-polyelectrolyte-and-its-function-in-adsorption-of-fluid-and-excess-nitrogen-waste-products-an-experimental-study-on-dialysate-effluent-fluid
#15
Hamid Tayebi Khosroshahi, Behzad Abedi, Sabalan Daneshvar, Effat Alizadeh, Mohammadreza Khalilzadeh, Yaghoub Abedi
INTRODUCTION: One of the most important issues in patients with chronic kidney disease is fluid retention and volume overload accompanied by retention of nitrogenous waste products and some electrolytes. Bowel fluid contains high levels of urea, creatinine, uric acid, and electrolytes, which make it a potential candidate for intestinal excretion of nitrogen wastes and electrolytes. Cross-linked polyelectrolyte (CLP) is a polymer that, given orally, absorbs excess fluid, electrolyte, and nitrogenous waste products...
July 2017: Iranian Journal of Kidney Diseases
https://www.readbyqxmd.com/read/28790462/itraq-and-virus-induced-gene-silencing-revealed-three-proteins-involved-in-cold-response-in-bread-wheat
#16
Ning Zhang, Lingran Zhang, Lei Zhao, Yan Ren, Dangqun Cui, Jianhui Chen, Yongyan Wang, Pengbo Yu, Feng Chen
By comparing the differentially accumulated proteins from the derivatives (UC 1110 × PI 610750) in the F10 recombinant inbred line population which differed in cold-tolerance, altogether 223 proteins with significantly altered abundance were identified. The comparison of 10 cold-sensitive descendant lines with 10 cold-tolerant descendant lines identified 140 proteins that showed decreased protein abundance, such as the components of the photosynthesis apparatus and cell-wall metabolism. The identified proteins were classified into the following main groups: protein metabolism, stress/defense, carbohydrate metabolism, lipid metabolism, sulfur metabolism, nitrogen metabolism, RNA metabolism, energy production, cell-wall metabolism, membrane and transportation, and signal transduction...
August 8, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28777904/cardiovascular-and-respiratory-effects-of-the-neoprene-wetsuit-in-non-immersed-divers
#17
Claudio Marabotti, Renato Prediletto, Alessandro Scalzini, Alessandro Pingitore, Mirko Passera, Marco Laurino, Antonio L'Abatte
A neoprene wetsuit is widely used to reduce thermal dispersion during diving. Recent observations have pointed out that elastic recoil of the wetsuit might have significant compressive effects, able to affect water and electrolyte homeostasis during both dry and immersed conditions. The aim of this study was to evaluate the possible cardiovascular and respiratory effects of the neoprene wetsuit in dry conditions in a sample of experienced divers. Twenty-four (24) healthy divers were evaluated by Doppler-echocardiography and by spirometry in basal conditions and while wearing a full neoprene wetsuit...
March 2017: Undersea & Hyperbaric Medicine: Journal of the Undersea and Hyperbaric Medical Society, Inc
https://www.readbyqxmd.com/read/28777126/the-role-of-polyethylene-glycol-in-the-treatment-of-functional-constipation-in-children
#18
Ilan J N Koppen, Ilse J Broekaert, Michael Wilschanski, Alexandra Papadopoulou, Carmen Ribes-Koninckx, Nikhil Thapar, Frederic Gottrand, Rok Orel, Paolo Lionetti, Marc A Benninga
According to international guidelines, polyethylene glycol (PEG) is the laxative of first choice in the treatment of functional constipation in children, both for disimpaction and for maintenance treatment. PEG acts as an osmotic laxative and its efficacy is dose dependent. PEG is highly effective, has a good safety profile and is well tolerated by children. Only minor adverse events have been reported. Overall the use of PEG in children has been reported to be safe, although in patients predisposed to water and electrolyte imbalances monitoring of serum electrolytes should be considered...
August 2, 2017: Journal of Pediatric Gastroenterology and Nutrition
https://www.readbyqxmd.com/read/28776973/reduced-graphene-oxide-coating-with-anticorrosion-and-electrochemical-property-enhancing-effects-applied-in-hydrogen-storage-system
#19
Yi Du, Na Li, Tong-Ling Zhang, Qing-Ping Feng, Qian Du, Xing-Hua Wu, Gui-Wen Huang
Low-capacity retention is the most prominent problem of the magnesium nickel alloy (Mg2Ni), which prevents it from being commercially applied. Here, we propose a practical method for enhancing the cycle stability of the Mg2Ni alloy. Reduced graphene oxide (rGO) possesses a graphene-based structure, which could provide high-quality barriers that block the hydroxyl in the aqueous electrolyte; it also possesses good hydrophilicity. rGO has been successfully coated on the amorphous-structured Mg2Ni alloy via electrostatic assembly to form the rGO-encapsulated Mg2Ni alloy composite (rGO/Mg2Ni)...
August 15, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28772661/novel-pefc-application-for-deuterium-isotope-separation
#20
Hisayoshi Matsushima, Ryota Ogawa, Shota Shibuya, Mikito Ueda
The use of a polymer electrolyte fuel cell (PEFC) with a Nafion membrane for isotopic separation of deuterium (D) was investigated. Mass analysis at the cathode side indicated that D diffused through the membrane and participated in an isotope exchange reaction. The exchange of D with protium (H) in H₂O was facilitated by a Pt catalyst. The anodic data showed that the separation efficiency was dependent on the D concentration in the source gas, whereby the water produced during the operation of the PEFC was more enriched in D as the D concentration of the source gas was increased...
March 16, 2017: Materials
keyword
keyword
82615
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"