keyword
MENU ▼
Read by QxMD icon Read
search

Passivity

keyword
https://www.readbyqxmd.com/read/29786887/perovskite-solar-cells-with-inorganic-electron-and-hole-transport-layers-exhibiting-long-term-%C3%A2-500-h-stability-at-85-%C3%A2-c-under-continuous-1-sun-illumination-in-ambient-air
#1
Seongrok Seo, Seonghwa Jeong, Changdeuck Bae, Nam-Gyu Park, Hyunjung Shin
Despite the high power conversion efficiency (PCE) of perovskite solar cells (PSCs), poor long-term stability is one of the main obstacles preventing their commercialization. Several approaches to enhance the stability of PSCs have been proposed. However, an accelerating stability test of PSCs at high temperature under the operating conditions in ambient air remains still to be demonstrated. Herein, interface-engineered stable PSCs with inorganic charge-transport layers are shown. The highly conductive Al-doped ZnO films act as efficient electron-transporting layers as well as dense passivation layers...
May 22, 2018: Advanced Materials
https://www.readbyqxmd.com/read/29786737/anti-amyloidogenic-properties-of-an-ethyl-acetate-fraction-from-actinidia-arguta-in-a%C3%AE-1-42-induced-icr-mice
#2
Jeong Su Ha, Jong Min Kim, Seon Kyeong Park, Jin Yong Kang, Du Sang Lee, Uk Lee, Dae-Ok Kim, Sung-Gil Choi, Ho Jin Heo
This study aimed to investigate the ameliorating effect of an ethyl acetate fraction from the fruit Actinidia arguta (EFAA) on amyloid beta (Aβ)-induced neurotoxicity and cognitive deficits in ICR mice. EFAA showed potent protective effects against Aβ-induced neurotoxicity through 2',7'-dichlorofluorescein diacetate (DCF-DA), 2',3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide (MTT) and lactate dehydrogenase (LDH) release into the assay medium. EFAA treatment reduced the intracellular ROS level and lactate dehydrogenase (LDH) release in the mitochondria, and increased cell viability in Aβ-induced neuroblastoma MC-IXC cells...
May 22, 2018: Food & Function
https://www.readbyqxmd.com/read/29786695/the-asthma-mobile-health-study-smartphone-data-collected-using-researchkit
#3
Yu-Feng Yvonne Chan, Brian M Bot, Micol Zweig, Nicole Tignor, Weiping Ma, Christine Suver, Rafhael Cedeno, Erick R Scott, Steven Gregory Hershman, Eric E Schadt, Pei Wang
Widespread adoption of smart mobile platforms coupled with a growing ecosystem of sensors including passive location tracking and the ability to leverage external data sources create an opportunity to generate an unprecedented depth of data on individuals. Mobile health technologies could be utilized for chronic disease management as well as research to advance our understanding of common diseases, such as asthma. We conducted a prospective observational asthma study to assess the feasibility of this type of approach, clinical characteristics of cohorts recruited via a mobile platform, the validity of data collected, user retention patterns, and user data sharing preferences...
May 22, 2018: Scientific Data
https://www.readbyqxmd.com/read/29785854/high-k-gate-dielectrics-for-emerging-flexible-and-stretchable-electronics
#4
Binghao Wang, Wei Huang, Lifeng Chi, Mohammed Al-Hashimi, Tobin J Marks, Antonio Facchetti
Recent advances in flexible and stretchable electronics (FSE), a technology diverging from the conventional rigid silicon technology, have stimulated fundamental scientific and technological research efforts. FSE aims at enabling disruptive applications such as flexible displays, wearable sensors, printed RFID tags on packaging, electronics on skin/organs, and Internet-of-things as well as possibly reducing the cost of electronic device fabrication. Thus, the key materials components of electronics, the semiconductor, the dielectric, and the conductor as well as the passive (substrate, planarization, passivation, and encapsulation layers) must exhibit electrical performance and mechanical properties compatible with FSE components and products...
May 22, 2018: Chemical Reviews
https://www.readbyqxmd.com/read/29785443/organic-inorganic-hybrid-perovskite-quantum-dots-with-high-plqy-and-enhanced-carrier-mobility-through-crystallinity-control-by-solvent-engineering-and-solid-state-ligand-exchange
#5
Jin Woo Choi, Hee Chul Woo, Xiaoguang Huang, Wan-Gil Jung, Bong-Joong Kim, Sie-Wook Jeon, Sang-Youp Yim, Jae-Suk Lee, Chang-Lyoul Lee
The photoluminescence quantum yield (PLQY) and charge carrier mobility of organic-inorganic perovskite QDs were enhanced by the optimization of crystallinity and surface passivation as well as solid-state ligand exchange. The crystallinity of perovskite QDs was determined by the Effective solvent field (Esol) of various solvents for precipitation. The solvent with high Esol could more quickly countervail the localized field generated by the polar solvent, and it causes fast crystallization of the dissolved precursor, which results in poor crystallinity...
May 22, 2018: Nanoscale
https://www.readbyqxmd.com/read/29785434/integration-of-phospholipid-hyaluronic-acid-methotrexate-nanocarrier-assembly-and-amphiphilic-drug-drug-conjugate-for-synergistic-targeted-delivery-and-combinational-tumor-therapy
#6
Yang Li, Huabing Zhang, Yilin Chen, Jinyuan Ma, Jinyan Lin, Yinying Zhang, Zhongxiong Fan, Guanghao Su, Liya Xie, Xuan Zhu, Zhenqing Hou
Combinational cancer therapy has been considered as a promising strategy to achieve synergetic therapeutic effects and suppression of multidrug resistance. Herein, we adopted a combination of methotrexate (MTX), an antimetabolite acting on cytoplasm, and 10-hydroxycamptothecin (HCPT), an alkaloid acting on nuclei, to treat cancer. Given the different solubilities, membrane permeabilities, and anticancer mechanisms of both drugs, we developed a dual-targeting delivery system based on 1,2-distearoyl-sn-glycero-3-phosphoethanolamine-hyaluronic acid (a principal ligand of CD44 receptors)-MTX (a selective ligand of folate receptors) nanoparticles, which was exploited to carry HCPT-MTX conjugate for synergistically boosting dual-drug co-delivery...
May 22, 2018: Biomaterials Science
https://www.readbyqxmd.com/read/29785232/effects-of-fasudil-on-patients-with-pulmonary-hypertension-associated-with-left-ventricular-heart-failure-with-preserved-ejection-fraction-a-prospective-intervention-study
#7
Xiang Zhang, Xueming Zhang, Saihua Wang, Jun Luo, Zhihong Zhao, Changzhu Zheng, Jieyan Shen
Background: Pulmonary hypertension due to left ventricular heart failure with preserved ejection fraction (PH-HFpEF) is an increasingly medical problem. The aim of the study was to evaluate the clinical efficacy of fasudil on PH-HFpEF elderly patients and to figure out the subtype of PH-HFpEF which may be the therapeutic object of fasudil. Method: 58 PH-HFpEF elderly patients were enrolled. Patients were diagnosed with passive pulmonary hypertension (PPH) or reactive pulmonary hypertension (RPH) by right heart catheterization and all receiving Rho kinase inhibitor fasudil for 2 weeks...
2018: Canadian Respiratory Journal: Journal of the Canadian Thoracic Society
https://www.readbyqxmd.com/read/29784379/comparison-of-chelex-based-resins-in-diffusive-gradients-in-thin-film-for-high-resolution-assessment-of-metals
#8
Chunyang Zhou, Sebastiaan van de Velde, Willy Baeyens, Yue Gao
The passive sampling technique of diffusive gradients in thin-film (DGT) is widely used to determine 1D profiles (using Chelex-100 resin) and 2D images (using suspended particulate reagent-iminodiacetate resin, abbreviated as SPR-IDA resin) of metals in sediment pore waters and in oxic/anoxic soils. However, when deployed in anoxic sediments with high metal concentrations, Fe and Mn concentrations determined with the Chelex-100 resin gel were ~ 5 times higher than concentrations measured with the SPR-IDA resin gel...
August 15, 2018: Talanta
https://www.readbyqxmd.com/read/29783708/following-acute-encephalitis-semliki-forest-virus-is-undetectable-in-the-brain-by-infectivity-assays-but-functional-virus-rna-capable-of-generating-infectious-virus-persists-for-life
#9
Rennos Fragkoudis, Catherine M Dixon-Ballany, Adrian K Zagrajek, Lukasz Kedzierski, John K Fazakerley
Alphaviruses are mosquito-transmitted RNA viruses which generally cause acute disease including mild febrile illness, rash, arthralgia, myalgia and more severely, encephalitis. In the mouse, peripheral infection with Semliki Forest virus (SFV) results in encephalitis. With non-virulent strains, infectious virus is detectable in the brain, by standard infectivity assays, for around ten days. As we have shown previously, in severe combined immunodeficient (SCID) mice, infectious virus is detectable for months in the brain...
May 18, 2018: Viruses
https://www.readbyqxmd.com/read/29783677/measuring-cortisol-in-the-classroom-with-school-aged-children-a-systematic-review-and-recommendations
#10
REVIEW
Mirena Dimolareva, Nancy R Gee, Karen Pfeffer, Laëtitia Maréchal, Kyla Pennington, Kerstin Meints
The collection of salivary cortisol has been chosen as one of the least intrusive, easiest to collect, analyze, and store methods of obtaining information on physiological changes. It is, however, not clear what the best practice is when collecting salivary cortisol from children within the school setting. The aim of this systematic review is to evaluate the feasibility of cortisol collection in schools for future research and to make recommendations for best practice. The review included 25 peer-reviewed articles from seven databases...
May 18, 2018: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/29783246/-%C3%B0-%C3%B0-%C3%B1-%C3%B0-%C3%B0-%C3%B1-%C3%B1-%C3%B0-%C3%B0-%C3%B0-%C3%B0-%C3%B0-%C3%B0-%C3%B1-%C3%B0-%C3%B0-%C3%B1-%C3%B0-%C3%B0-%C3%B1-%C3%B0-%C3%B0-%C3%B0-%C3%B1-%C3%B0-%C3%B0-%C3%B1-%C3%B1-%C3%B1-%C3%B0%C2%BA-%C3%B0-%C3%B0-%C3%B0-%C3%B1-%C3%B0-%C3%B0-%C3%B1-%C3%B0-%C3%B0-%C3%B0-%C3%B1-%C3%B1-%C3%B1-%C3%B1-%C3%B0-%C3%B0-%C3%B0-%C3%B0-%C3%B0-%C3%B0-%C3%B0-%C3%B0-%C3%B0-%C3%B0-%C3%B0-%C3%B0-%C3%B0-%C3%B0-%C3%B0-%C3%B0-%C3%B0-%C3%B0-%C3%B0-%C3%B0-%C3%B0-%C3%B0-%C3%B0-%C3%B0-%C3%B0-%C3%B0-%C3%B0-%C3%B0-%C3%B0-%C3%B0-%C3%B0-%C3%B0-%C3%B0-%C3%B0-%C3%B0-%C3%B0-%C3%B0-%C3%B0-%C3%B0-%C3%B0-%C3%B0-%C3%B0-%C3%B0-%C3%B0-%C3%B0-%C3%B0-%C3%B0-%C3%B0-%C3%B0-%C3%B0-%C3%B0-%C3%B0-%C3%B0-%C3%B0-%C3%B0-%C3%B0-%C3%B0-%C3%B0-%C3%B0-%C3%B0-%C3%B0-%C3%B0-%C3%B0-%C3%B0-%C3%B0-%C3%B0-%C3%B0-%C3%B0-%C3%B0-%C3%B0-%C3%B0-%C3%B0-%C3%B0-%C3%B0-%C3%B0-%C3%B0-%C3%B0-%C3%B0-%C3%B0-%C3%B0-%C3%B0-%C3%B0-%C3%B0-%C3%B0
#11
Nataliia O Rynhach, Vasyl M Mykhalchuk, Anatolii H Krut
OBJECTIVE: Introduction: This publication focuses on role of physical activity in promoting and protecting health and well-being. Physical activity is a significant risk factor for noncommunicable diseases. The public's awareness of the risk factors of non-communicable diseases is an important component of their control. The aim: To estimate the level of knowledge of the working age population regarding the essence of a healthy lifestyle and risk factors for non-communicable diseases (with an emphasis on lack of physical activity and its consequences) according to qualitative and quantitative sociological research...
2018: Wiadomości Lekarskie: Organ Polskiego Towarzystwa Lekarskiego
https://www.readbyqxmd.com/read/29783187/impact-of-drought-and-salt-stress-on-the-biosynthesis-of-alkaloids-in-chelidonium-majus-l
#12
Mahdi Yahyazadeh, Rieke Meinen, Robert Hänsch, Sara Abouzeid, Dirk Selmar
When plants are exposed to various stress situations, their alkaloid concentration frequently is enhanced. This well-known phenomenon is presumably due to a passively enhanced rate of biosynthesis, caused by greatly elevated concentrations of NADPH in stressed plants. Here, we used Chelidonium majus L. plants, which accumulate high concentrations of dihydrocoptisine in their leaves, to study the impact of drought and salt stress on the biosynthesis and accumulation of alkaloids. In comparison to well-watered controls, in the transcriptome of the gene encoding the key enzyme in alkaloid biosynthesis, stylopine synthase, is enhanced in stressed C...
May 18, 2018: Phytochemistry
https://www.readbyqxmd.com/read/29782947/multifunctional-degradable-electronic-scaffolds-for-cardiac-tissue-engineering
#13
Ron Feiner, Sharon Fleischer, Assaf Shapira, Or Kalish, Tal Dvir
The capability to on-line sense tissue function, provide stimulation to control contractility and efficiently release drugs within an engineered tissue microenvironment may enhance tissue assembly and improve the therapeutic outcome of implanted engineered tissues. To endow cardiac patches with such capabilities we developed elastic, biodegradable, electronic scaffolds. The scaffolds were composed of electrospun albumin fibers that served as both a substrate and a passivation layer for evaporated gold electrodes...
May 18, 2018: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/29782801/epr-evidence-of-liquid-water-in-ice-an-intrinsic-property-of-water-or-a-self-confinement-effect
#14
Muthulakshmi Thangswamy, Priya Maheshwari, Dhanadeep Dutta, Vinayak G Rane, Pradeep Kumar Pujari
Liquid water (LW) existence in pure ice below 273 K has been a controversial aspect primarily because of the lack of experimental evidences. Recently, electron paramagnetic resonance (EPR) has been used to study deeply supercooled water in a rapidly-frozen polycrystalline ice. The same technique can also be used to probe the presence of LW in polycrystalline ice that has formed through a more conventional, slow cooling one. In this context, the present study aims to emphasize that in case of an external probe involving techniques such as EPR, the results are influenced by the binary phase (BP) diagram of the probe-water system, which also predicts the existence of LW domains in ice, upto the eutectic point...
May 21, 2018: Journal of Physical Chemistry. A
https://www.readbyqxmd.com/read/29782222/clinical-effectiveness-of-a-resin-modified-glass-ionomer-cement-and-a-mild-one-step-self-etch-adhesive-applied-actively-and-passively-in-noncarious-cervical-lesions-an-18-month-clinical-trial
#15
M Jassal, S Mittal, S Tewari
OBJECTIVES: To evaluate the clinical effectiveness of two methods of application of a mild one-step self-etch adhesive and composite resin as compared with a resin-modified glass ionomer cement (RMGIC) control restoration in noncarious cervical lesions (NCCLs). METHODS: A total of 294 restorations were placed in 56 patients, 98 in each one of the following groups: 1) G-Bond active application combined with Solare-X composite resin (A-1SEA), 2) G-Bond passive application combined with Solare-X composite resin (P-1SEA), and 3) GC II LC RMGIC...
May 21, 2018: Operative Dentistry
https://www.readbyqxmd.com/read/29782218/postural-control-and-physiological-responses-to-a-simulated-match-in-u-20-judo-competitors
#16
Luis Santos, Javier Fernández-Río, Eliseo Iglesias-Soler, Miguel Blanco-Traba, Markus Due Jakobsen, Vicente González-Díez, Emerson Franchini, Carlos Gutiérrez, Xurxo Dopico-Calvo, Eduardo Carballeira-Fernández, William Amonette, Oscar Suman
The aim was to evaluate the effects of judo combat on the athletes' postural control (PC) and physiological loading before, during and after a simulated match. Seventeen under-20 regional and national level athletes completed one modified 7-min match. At baseline, during the combat (3rd and 7th minutes) and 2-min post-match centre of pressure (CoP) parameters were assessed. Heart rate (HR), blood lactate (BLa) and rating of perceived exertion (RPE) and local RPE (LRPE) were collected. Significant increments were observed in CoP mean positioning and velocity at 3rd and 7th minutes, but the CoP deviation in both axes was unaffected...
May 21, 2018: Sports Biomechanics
https://www.readbyqxmd.com/read/29782175/synthetic-insights-into-surface-functionalization-of-si-111-r-photoelectrodes-steric-control-and-deprotection-of-molecular-passivating-layers
#17
Ryan T Pekarek, Hugo Celio, Michael J Rose
We report the utility of controlled spacing of molecular monolayers on Si(111) surfaces by the use of sterically bulky silanes. The steric bulk of a 3,5-diphenolic linker of type Ph-diO-SiR3 (R = hexyl, phenyl, i Pr)-as well as the smaller Ph-diOMe-is shown to control the surface coverage on Si(111). The para substituent was also changed from -F (small) to -OTf (triflate, large) to modulate the conformation of a selected bulky silane (SiR3 ; R = hexyl) to further control the steric environment of the monolayer...
May 21, 2018: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/29782005/the-diffusion-of-passive-tracers-in-laminar-shear-flow
#18
Manuchehr Aminian, Francesca Bernardi, Roberto Camassa, Daniel M Harris, Richard M McLaughlin
A simple method to experimentally observe and measure the dispersion of a passive tracer in a laminar fluid flow is described. The method consists of first injecting fluorescent dye directly into a pipe filled with distilled water and allowing it to diffuse across the cross-section of the pipe to obtain a uniformly distributed initial condition. Following this period, the laminar flow is activated with a programmable syringe pump to observe the competition of advection and diffusion of the tracer through the pipe...
May 1, 2018: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29781869/utilizing-facebook-and-automated-telephone-calls-to-increase-adoption-of-a-local-smoke-alarm-installation-program
#19
Shannon Frattaroli, Eric Schulman, Eileen M McDonald, Elise C Omaki, Wendy C Shields, Vanya Jones, William Brewer
CONTEXT: Innovative strategies are needed to improve the prevalence of working smoke alarms in homes. To our knowledge, this is the first study to report on the effectiveness of Facebook advertising and automated telephone calls as population-level strategies to encourage an injury prevention behavior. OBJECTIVE: We examine the effectiveness of Facebook advertising and automated telephone calls as strategies to enroll individuals in Baltimore City's Fire Department's free smoke alarm installation program...
May 17, 2018: Journal of Public Health Management and Practice: JPHMP
https://www.readbyqxmd.com/read/29781786/sitagliptin-rescues-memory-deficits-in-parkinsonian-rats-via-upregulating-bdnf-to-prevent-neuron-and-dendritic-spine-loss
#20
Jing Li, Shuhu Zhang, Chenye Li, Mei Li, Lan Ma
OBJECTIVES: Parkinson's disease (PD) is a neurodegenerative disease with high morbidity among adults worldwide that causes tremendous trouble to people's lives. The purpose of this study was to investigate the impact of sitagliptin on PD and its potential mechanism. METHODS: First, the memory of rats in each group was evaluated with the Morris water maze (MWM) test and the passive avoidance test. Then, both brain-derived neurotrophic factor (BDNF) protein and mRNA levels were detected by ELISA and qPCR assays, respectively...
May 21, 2018: Neurological Research
keyword
keyword
70686
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"