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https://www.readbyqxmd.com/read/29793181/exogenously-applied-spermidine-alleviates-photosynthetic-inhibition-under-drought-stress-in-maize-zea-mays-l-seedlings-associated-with-changes-in-endogenous-polyamines-and-phytohormones
#1
Lijie Li, Wanrong Gu, Jing Li, Congfeng Li, Tenglong Xie, Danyang Qu, Yao Meng, Caifeng Li, Shi Wei
Drought stress (DS) is a major environmental factor limiting plant growth and crop productivity worldwide. It has been established that exogenous spermidine (Spd) stimulates plant tolerance to DS. The effects of exogenous Spd on plant growth, photosynthetic performance, and chloroplast ultrastructure as well as changes in endogenous polyamines (PAs) and phytohormones were investigate in DS-resistant (Xianyu 335) and DS-sensitive (Fenghe 1) maize seedlings under well-watered and DS treatments. Exogenous Spd alleviated the stress-induced reduction in growth, photosynthetic pigment content, photosynthesis rate (Pn ) and photochemical quenching (qP ) parameters, including the maximum photochemistry efficiency of photosystem II (PSII) (Fv /Fm ), PSII operating efficiency (ФPSII), and qP coefficient...
May 15, 2018: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/29792974/patient-compliance-with-maintenance-intravesical-therapy-for-non-muscle-invasive-bladder-cancer
#2
Shlomi Tapiero, Alexander Helfand, Daniel Kedar, Ofer Yossepowitch, Andrei Nadu, Jack Baniel, David Lifshitz, David Margel
OBJECTIVE: To assess patient adherence to intravesical instillation therapy for non-muscle invasive urothelial carcinoma outside of clinical trials. METHODS: We reviewed the records of patients from 2000-2013 who received intravesical therapy for non-muscle invasive urothelial carcinoma. Patients with evidence of tumor recurrence or progression were excluded. We performed univariable and multivariable regression analysis to predict adherence to intravesical therapy...
May 21, 2018: Urology
https://www.readbyqxmd.com/read/29792666/chemical-evolution-in-silicon-graphite-composite-anodes-investigated-by-vibrational-spectroscopy
#3
Rose E Ruther, Kevin A Hays, Seong Jin An, Jianlin Li, David L Wood, Jagjit Nanda
Silicon-graphite composites are under development for the next generation of high-capacity lithium-ion anodes, and vibrational spectroscopy is a powerful tool to identify the different mechanisms that contribute to performance loss. With alloy anodes, the underlying causes of cell failure are significantly different in half-cells with lithium metal counter electrodes compared to full cells with standard cathodes. However, most studies which take advantage of vibrational spectroscopy have only examined half-cells...
May 24, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29792665/highly-conductive-and-robust-3d-host-with-excellent-alkali-metal-infiltration-boosts-ultra-stable-lithium-and-sodium-metal-anodes
#4
Wan-Sheng Xiong, Yu Xia, Yun Jiang, Yuyang Qi, Weiwei Sun, Dan He, Yumin Liu, Xingzhong Zhao
The direct utilization of metallic lithium and sodium as the anodes for rechargeable batteries would be highly advantageous, which has been considered as one of the most promising choices for next-generation high-energy-density storage devices. Although the induced safety concerns, inferior rate and cycling performance severely hinder the commercialization of lithium-metal batteries (LMB) and sodium-metal batteries (SMB), the recent development of nanotechnology-based solutions really revives the lithium/sodium metal anodes for high-energy batteries...
May 24, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29792186/involvement-of-the-cb-2-cannabinoid-receptor-in-cell-growth-inhibition-and-g0-g1-cell-cycle-arrest-via-the-cannabinoid-agonist-win-55-212-2-in-renal-cell-carcinoma
#5
Mohammed I Khan, Anna A Sobocińska, Klaudia K Brodaczewska, Katarzyna Zielniok, Malgorzata Gajewska, Claudine Kieda, Anna M Czarnecka, Cezary Szczylik
BACKGROUND: The anti-tumor properties of cannabinoids have been investigated in many in vitro and in vivo studies. Many of these anti-tumor effects are mediated via cannabinoid receptor types 1 and 2 (CB1 and CB2 ), comprising the endocannabinoid system (ECS). In this study, we investigated the ECS based on CB 1 and CB 2 receptor gene and protein expression in renal cell carcinoma (RCC) cell lines. In view of their further use for potential treatments, we thus investigated the roles of CB1 and CB2 receptors in the anti-proliferative action and signal transduction triggered by synthetic cannabinoid agonists [such as JWH-133 and WIN 55,212-2 (WIN-55)] in RCC cell lines...
May 23, 2018: BMC Cancer
https://www.readbyqxmd.com/read/29792121/abcg2-polymorphism-rs2231142-and-hypothyroidism-in-metastatic-renal-cell-carcinoma-patients-treated-with-sunitinib
#6
Emilie Werbrouck, Julie Bastin, Diether Lambrechts, Annelies Verbiest, Thomas Van Brussel, Evelyne Lerut, Jean-Pascal Machiels, Vincent Verschaeve, Vincent Richard, Philip R Debruyne, Brigitte Decallonne, Patrick Schöffski, Oliver Bechter, Pascal Wolter, Benoit Beuselinck
Background and aim Vascular endothelial growth factor receptor tyrosine kinase inhibitors (VEGFR-TKIs) cause significant adverse events including thyroid dysfunction, mainly hypothyroidism, in a considerable proportion of patients. In a series of metastatic renal cell carcinoma (mRCC) patients treated with sunitinib, we aimed to study the correlation between hypothyroidism and single nucleotide polymorphisms (SNPs) in genes involved in sunitinib pharmacokinetics and pharmacodynamics. Patients and methods We included 79 mRCC patients who started sunitinib between November 2005 and March 2016...
May 23, 2018: Acta Clinica Belgica
https://www.readbyqxmd.com/read/29792048/annals-express-a-novel-high-throughput-assay-for-the-measurement-of-salivary-progesterone-by-liquid-chromatography-tandem-mass-spectrometry
#7
Lina Schiffer, Joanne Elaine Adaway, Elizabeth S Baranowski, Wiebke Arlt, Brian G Keevil
BACKGROUND: Liquid chromatography tandem mass spectrometry (LC-MS/MS) enables specific and sensitive quantification of steroids with a high-throughput. Saliva sampling is advantageous for multi-sample profiling over longer periods of time as it is non-invasive, cheap, can be carried out at home and does not require the attendance of clinical personnel. We developed a rapid LC-MS/MS for the measurement of salivary progesterone, frequently assessed as ovulation marker in patients desiring fertility...
January 1, 2018: Annals of Clinical Biochemistry
https://www.readbyqxmd.com/read/29792025/hierarchical-nanostructures-of-nitrogen-doped-porous-carbon-polyhedrons-confined-in-carbon-nanosheets-for-high-performance-supercapacitors
#8
Zhe Zhao, Siliang Liu, Jixin Zhu, Jingsan Xu, Le Li, Zhaoqi Huang, Chao Zhang, Tianxi Liu
Interconnected close-packed nitrogen-doped porous carbon polyhedrons (NCPs) confined in a two-dimensional carbon nanosheets (CNSs) have been prepared through a sustainable one-pot pyrolysis of a simple solid mixture of zeolitic imidazolate framework-8 (ZIF-8) crystals and organic potassium as the precursors. The hierarchically organized framework of the NCP-CNS composites enables NCPs and CNSs acting as well-defined electrolyte reservoirs and mechanical buffers accommodating large volume expansions of NCPs, respectively...
May 24, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29791887/long-term-no-tillage-application-increases-soil-organic-carbon-nitrous-oxide-emissions-and-faba-bean-vicia-faba-l-yields-under-rain-fed-mediterranean-conditions
#9
Giuseppe Badagliacca, Emilio Benítez, Gaetano Amato, Luigi Badalucco, Dario Giambalvo, Vito Armando Laudicina, Paolo Ruisi
The introduction of legumes into crop sequences and the reduction of tillage intensity are both proposed as agronomic practices to mitigate the soil degradation and negative impact of agriculture on the environment. However, the joint effects of these practices on nitrous oxide (N2 O) and ammonia (NH3 ) emissions from soil remain unclear, particularly concerning semiarid Mediterranean areas. In the frame of a long-term field experiment (23 years), a 2-year study was performed on the faba bean (Vicia faba L...
May 20, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/29791886/the-emission-of-btex-compounds-during-movement-of-passenger-car-in-accordance-with-the-nedc
#10
Dragan Adamović, Jovan Dorić, Mirjana Vojinović Miloradov, Savka Adamović, Sabolč Pap, Jelena Radonić, Maja Turk Sekulić
The results of the research in the field of benzene, toluene, ethylbenzene and xylene isomers (BTEX) concentrations in exhaust gases of spark ignition engines under different operating conditions are presented in this paper. The aim of this paper is to gain a clearer insight into the impact of different engine working parameters on the concentrations of BTEX. The experimental investigation has been performed on the SCHENCK 230 W test stand with the controlled IC engine. The engine operating points have been chosen based on the results of a simulation and they are considered as the typical driving conditions according to the New European Driving Cycle...
May 20, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/29791401/investigation-of-index-change-in-compression-molding-of-as-40-se-50-s-10-chalcogenide-glass
#11
Lin Zhang, Wenchen Zhou, Neil J Naples, Allen Y Yi
Chalcogenide glasses are emerging as alternative materials for low-cost and high-volume glass molding processes for infrared optics. In precision glass molding, it is well documented that the refractive index variation in the molded elements can lead to substantial amounts of aberrations. The variation has such a significant effect that the optical designs with molded lenses need to be carefully considered and compensated for index variation to achieve targeted optical performance. This research is aimed to evaluate the refractive index change of a chalcogenide glass during the molding process by both finite element method-based simulation and optical experiment...
May 20, 2018: Applied Optics
https://www.readbyqxmd.com/read/29791347/freeform-characterization-based-on-nanostructured-diffraction-gratings
#12
M Bichra, T Meinecke, P Fesser, L Müller, M Hoffmann, S Sinzinger
The in-line characterization of freeform optical elements during the production cycle is challenging. Recently, we presented a compact sensor setup for the characterization of the wavefront generated by freeform optical elements in transmission. The sensor is based on a common-path interferometer consisting of diffractive components and Fourier filtering being adapted to the subsequent numerical post processing. Additionally, it offers several degrees of freedom for enlarging the measurement range of the wavefront gradients...
May 10, 2018: Applied Optics
https://www.readbyqxmd.com/read/29790961/increased-vulnerability-to-attentional-failure-during-acute-sleep-deprivation-in-women-depends-on-menstrual-phase
#13
Parisa Vidafar, Joshua J Gooley, Angus C Burns, Shantha M W Rajaratnam, Melanie Rueger, Eliza Van Reen, Charles A Czeisler, Steven W Lockley, Sean W Cain
Study Objectives: Investigate sex differences in the effect of sleep deprivation on performance, accounting for menstrual phase in women. Methods: We examined alertness data from 124 healthy women and men (40 women, 84 men; aged 18 - 30 years) who maintained wakefulness for at least 30 hours in a laboratory setting using a constant routine protocol. Objective alertness was assessed every two hours using a 10-minute Psychomotor Vigilance Task. Subjective alertness was assessed every hour via the Karolinska Sleepiness Scale...
May 22, 2018: Sleep
https://www.readbyqxmd.com/read/29790867/fluorine-18-fluorocholine-pet-ct-parameters-predictive-for-hematological-toxicity-to-radium-223-therapy-in-castrate-resistant-prostate-cancer-patients-with-bone-metastases-a-pilot-study
#14
Lavinia Vija Racaru, Mathieu Sinigaglia, Salim Kanoun, Fayçal Ben Bouallègue, Ilan Tal, Sévérine Brillouet, Mathilde Bauriaud-Mallet, Slimane Zerdoud, Lawrence Dierickx, Delphine Vallot, Olivier Caselles, Erwan Gabiache, Pierre Pascal, Frederic Courbon
PURPOSE: This study aims to predict hematological toxicity induced by Ra therapy. We investigated the value of metabolically active bone tumor volume (MBTV) and total bone lesion activity (TLA) calculated on pretreatment fluorine-18-fluorocholine (F-FCH) PET/CT in castrate-resistant prostate cancer (CRPC) patients with bone metastases treated with Ra radionuclide therapy. PATIENTS AND METHODS: F-FCH PET/CT imaging was performed in 15 patients with CRPC before treatment with Ra...
May 21, 2018: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/29790742/surface-modification-of-silicon-nanoparticles-by-an-ink-layer-for-advanced-lithium-ion-batteries
#15
Fang Wu, Hao Wang, Jiayuan Shi, Zongkai Yan, Shipai Song, Bangheng Peng, Xiaokun Zhang, Yong Xiang
Due to its high specific capacity, silicon is considered as a promising anode materials for LIBs. While, the synthesis strategies for those previous silicon-based anode materials with delicate hierarchically-structure are complicated or hazardous. Here, prussian blue analogues (PBAs), as widely used in ink, is deposited on the silicon nanoparticles surface (PBAs@Si-450) to modify silicon nanoparticles with a transition metal atoms and N doped carbon layer. A facile and green synthesis procedure of PBAs@Si-450 nanocomposites are precipitated in a co-precipitation process combined with a thermal treatment process at 450 oC...
May 23, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29790731/electrochemical-properties-of-lini0-6co0-2mn0-2o2-cathode-material-modified-by-lithium-tungstate-under-high-voltage
#16
Jiale Fu, Daobin Mu, Borong Wu, Jiaying Bi, Hui Cui, Hao Yang, Hanfeng Wu, Feng Wu
An amount (5wt.%) of lithium tungstate (Li2WO4) as an additive significantly improves the cycle and rate performances of LiNi0.6Co0.2Mn0.2O2 electrode at the cut-off voltage of 4.6V. The 5wt.% Li2WO4-mixed LiNi0.6Co0.2Mn0.2O2 electrode delivers a reversible capacity of 199.2 mAhg-1 and keeps 73.1% capacity for 200 cycles at 1C. It retains 67.4% capacity after 200 cycles at 2C and delivers a discharge capacity of 167.3mAh g-1 at 10C, while those of the pristine electrode are only 44.7% and 87.5mAh g-1, respectively...
May 23, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29790693/hounsfield-units-from-unenhanced-18f-fdg-pet-ct-are-useful-in-evaluating-supradiaphragmatic-lymph-nodes-in-children-and-adolescents-with-classical-hodgkin-s-lymphoma
#17
Radosław Chaber, Mateusz Łasecki, Justyna Kwaśnicka, Kornelia Łach, Zbigniew Podgajny, Cyprian Olchowy, Urszula Zaleska-Dorobisz
BACKGROUND: The precise identification of the primarily-affected nodal regions in Hodgkin's lymphoma(HL) is essential in determining the stage of the disease and the intensity of chemotherapy and radiotherapy. OBJECTIVES: The aim of this study was to use the degree of X-ray attenuation (XRA) in Hounsfield units(HU) and the lymph node-to-muscle attenuation ratio (LN/M) in computed tomography (CT) unenhancedimaging, routinely performed with 18F-fluorodeoxyglucose positron emission tomography (18F-FDG-PET),to distinguish HL-affected supradiaphragmatic lymph nodes...
May 16, 2018: Advances in Clinical and Experimental Medicine: Official Organ Wroclaw Medical University
https://www.readbyqxmd.com/read/29790549/a-mof-derived-method-to-construct-well-arranged-porous-nanosheets-for-lithium-ion-batteries
#18
JinCheng Du, YuHai Tang, Yu Wang, PengHui Shi, JinChen Fan, QunJie Xu, YuLin Min
In this work, we report a facile route to fabricate a ZnCo2O4 nanosheet derived from metal-organic frameworks. The as-prepared ZnCo2O4 nanosheet material for lithium-ion batteries shows an excellent electrochemical performance. The obtained ZnCo2O4 nanosheet delivers a high reversible capacity of 1640.8 mA h g-1 at a current density of 100 mA g-1 after 50 cycles. More importantly, even at a current density of 1500 mA g-1, the electrode material still exhibits a discharge capacity of 581.3 mA h g-1 after 190 cycles...
May 23, 2018: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/29790478/validation-of-a-novel-non-hyperaemic-index-of-coronary-artery-stenosis-severity-the-resting-full-cycle-ratio-validate-rfr-study
#19
Johan Svanerud, Jung-Min Ahn, Allen Jeremias, Marcel van 't Veer, Ankita Gore, Akiko Maehara, Aaron Crowley, Nico H J Pijls, Bernard De Bruyne, Nils P Johnson, Barry Hennigan, Stuart Watkins, Colin Berry, Keith G Oldroyd, Seung-Jung Park, Ziad A Ali
AIMS: Randomised controlled trials have reported instantaneous wave-free ratio (iFR) to be non-inferior to fractional flow reserve (FFR) for major adverse cardiovascular events at one year; however, iFR is limited by sensitive landmarking of the pressure waveform, and the assumption that maximal flow and minimal resistance occur during a fixed period of diastole. We sought to validate the resting full-cycle ratio (RFR), a novel non-hyperaemic index of coronary stenosis severity based on unbiased identification of the lowest distal coronary pressure to aortic pressure ratio (Pd/Pa), independent of the ECG, landmark identification, and timing within the cardiac cycle...
May 23, 2018: EuroIntervention
https://www.readbyqxmd.com/read/29790282/flexible-tio2-sio2-c-film-anodes-for-lithium-ion-batteries
#20
Ying Jiang, Shi Chen, Daobin Mu, Zhikun Zhao, Chunli Li, Zepeng Ding, Chaoxiang Xie, Feng Wu
Flexible TiO2/SiO2/C films are prepared via an electrospinning approach and used as self-supporting electrodes for LIBs, which exhibits excellent high-rate capability with a capacity of 115.5 mA h g-1 at 8 A g-1 (9.8 C rate) and good storage performance. It also shows great long-term cycle of 700 cycles at 200 mA g-1 with a capacity of 380.1 mA h g-1 and a high capacity retention of 88.3%s. Thus, it has the potential as electrodes for flexible LIBs owing to its flexibility and excellent electrochemical performance...
May 22, 2018: ChemSusChem
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