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https://www.readbyqxmd.com/read/29792496/the-big-two-personality-traits-and-adolescents-complete-mental-health-the-mediation-role-of-perceived-school-stress
#1
Lili Tian, Siyi Jiang, E Scott Huebner
Based on Greenspoon and Saklofske's (2001) dual-factor model of mental health, we defined adolescents' mental health as comprised of two distinguishable factors: positive and negative mental health. We tested the direct relations between the Eysenck's (1967) Big Two personality traits (Extraversion and Neuroticism) and positive and negative mental health, and explored the mediation effects of perceived school stress in accounting for the relations. Direct and indirect relations were estimated by using structural equation modeling with data from 1,009 Chinese adolescents in a 3-wave study...
May 24, 2018: School Psychology Quarterly
https://www.readbyqxmd.com/read/29792412/facet-dependent-kinetics-and-energetics-of-hematite-for-solar-water-oxidation-reactions
#2
Wei Li, Ke R Yang, Xiahui Yao, Yumin He, Qi Dong, Gary W Brudvig, Victor S Batista, Dunwei Wang
The performance of a photoelectrochemical (PEC) system is highly dependent on the charge separation, transport and transfer characteristics at the photoelectrode|electrolyte interface. Of the factors that influence the charge behaviors, the crystalline facets of the semiconductor in contact with the electrolyte play an important role but has been poorly studied previously. Here, we present a study aimed at understanding how the different facets of hematite affect the charge separation and transfer behaviors in a solar water oxidation reaction...
May 24, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29792097/the-effect-of-loneliness-on-depression-a-meta-analysis
#3
Evren Erzen, Özkan Çikrikci
BACKGROUND: Negative emotions, which have a common, chronic and recurrent structure, play a vital role in the development and maintenance of psychopathology. In this study, loneliness as a negative emotion was considered to be a predisposing factor in depression. AIM: The aim of this meta-analysis is to determine the effect of loneliness on depression. METHOD: Initially, a literature scan was performed and all related literature was pooled together ( n = 531)...
May 1, 2018: International Journal of Social Psychiatry
https://www.readbyqxmd.com/read/29791567/immunohistological-study-of-the-effect-of-vascular-endothelial-growth-factor-on-the-angiogenesis-of-mature-root-canals-in-rat-molars
#4
Cleber Keiti Nabeshima, José Edgar Valdivia, Hector Caballero-Flores, Victor Elias Arana-Chavez, Manoel Eduardo de Lima Machado
Tissue bioengineering has been applied to Endodontics to seek a more biological treatment. The presence of blood vessels is crucial for cell nutrition during tissue formation. Objective This study analysed the application of vascular endothelial growth factor (VEGF) in the angiogenesis of mature root canals. Material and methods Upper first molars of twelve 13-week old Wistar male rats were used. The root pulp of the mesiobuccal canal was removed and the root canal instrumented with K-files up to size #25. Periapical bleeding was induced into the root canal by introducing a #15 K-file beyond the apex...
2018: Journal of Applied Oral Science: Revista FOB
https://www.readbyqxmd.com/read/29791318/the-inhibitors-a-challenge-for-the-management-of-patients-with-hereditary-haemophilia-a
#5
Romeo-Gabriel Mihăilă
INTRODUCTION: Our research strategy was aimed at evaluating the possible implication of the type of factor VIII product administered as substitution treatment to haemophilia A patients in the occurrence of inhibitors and their consequences on the management. METHODS: Scientific articles from July 2015 to July 2017 were searched using the PubMed and PubMed Central databases. The used search terms included "haemophilia A", "inhibitors", "plasma-derived factor VIII" and "recombinant factor VIII"...
May 1, 2018: Romanian Journal of Internal Medicine, Revue Roumaine de Médecine Interne
https://www.readbyqxmd.com/read/29791167/vibration-assisted-and-vibration-hampered-excitonic-quantum-transport
#6
Omer Goldberg, Yigal Meir, Yonatan Dubi
The interplay between exctions and vibrations is considered to be a key factor in determining the exciton transfer properties in light-harvesting exciton transfer complexes. Here we study this interplay theoretically in a model for exciton transport, composed of two chromophores coupled to an exciton source and sink in the presence of vibrations. We consider two cases, that show qualitatively distinct transport features. In the first, the vibrations are global and affect the two chromophores simultaneously...
May 23, 2018: Journal of Physical Chemistry Letters
https://www.readbyqxmd.com/read/29790615/a-journey-into-the-retina-m%C3%A3-ller-glia-commanding-survival-and-death
#7
REVIEW
Paula V Subirada, María C Paz, Magali E Ridano, Valeria E Lorenc, María V Vaglienti, Pablo F Barcelona, José D Luna, María C Sánchez
Müller Glial Cells (MGCs) are known to participate actively in retinal development and to contribute to homeostasis through many intracellular mechanisms. As there are no homologous cells in other neuronal tissues, it is certain that retinal health depends on MGCs. These macroglial cells are located at the centre of the columnar subunit and have a great ability to interact with neurons, astrocytes, microglia and endothelial cells in order to modulate different events. Several investigations have focused their attention on the role of MGCs in diabetic retinopathy, a progressive pathology where several insults coexist...
May 23, 2018: European Journal of Neuroscience
https://www.readbyqxmd.com/read/29790262/the-efficacy-and-tolerability-of-5-aminolevulinic-acid-5-thermosetting-gel-photodynamic-therapy-pdt-in-the-treatment-of-mild-to-moderate-acne-vulgaris-a-two-center-prospective-assessor-blinded-proof-of-concept-study
#8
Stefano Maria Serini, Maria Vittoria Cannizzaro, Annunziata Dattola, Virginia Garofalo, Esther Del Duca, Alessandra Ventura, Massimo Milani, Elena Campione, Luca Bianchi
BACKGROUND: Acne vulgaris is a chronic inflammatory skin disease, commonly treated with topical or systemic drugs, according to the severity of the condition. Retinoids and antibiotic compounds are considered cornerstone approaches in this condition. However, low adherence to the therapy and the issue of bacterial resistance undermine the efficacy in the long term. Photodynamic therapy (PDT) with 20% aminolevulinic acid (ALA) has shown to be effective in the treatment of inflammatory acne...
May 22, 2018: Journal of Cosmetic Dermatology
https://www.readbyqxmd.com/read/29790257/functionalized-silk-fibers-from-transgenic-silkworms-for-wound-healing-applications-surface-presentation-of-bioactive-epidermal-growth-factor
#9
Michael Wöltje, Melanie Böbel, Michaela Bienert, Sabine Neuss, Dilibaier Aibibu, Chokri Cherif
Growth factors play a crucial role in wound healing in general and are promising tools for the treatment of chronic wounds as they can restore the physiological wound healing process. In growth factor-loaded wound dressings, human epidermal growth factor (EGF) is released in a burst and washed out quickly. The developed matrix consists of recombinant EGF produced in transgenic silkworms as a fusion protein with the fibroin light chain. The covalent linkage prevents EGF from draining into the surrounding tissue while presenting the growth factor on the surface...
May 23, 2018: Journal of Biomedical Materials Research. Part A
https://www.readbyqxmd.com/read/29789938/meta-analysis-of-physical-activity-and-effects-of-social-function-and-quality-of-life-on-the-physical-activity-in-patients-with-schizophrenia
#10
Kazutaka Ohi, Yuzuru Kataoka, Takamitsu Shimada, Aki Kuwata, Hiroaki Okubo, Kohei Kimura, Toshiki Yasuyama, Takashi Uehara, Yasuhiro Kawasaki
Schizophrenia patients have increased mortality and morbidity, mainly due to premature cardiovascular disease resulting from decreased physical activity (PA). However, which PA intensity is impaired in the patients and how factors such as social function and quality of life (QoL) are related to decreased PA is unknown. To assess PA, social function and QoL, the International Physical Activity Questionnaire (IPAQ), Social Functioning Scale (SFS) and Schizophrenia Quality of Life Scale (SQLS), respectively, were used in 109 schizophrenia patients and 69 healthy subjects...
May 22, 2018: European Archives of Psychiatry and Clinical Neuroscience
https://www.readbyqxmd.com/read/29789886/gcttca-as-a-novel-motif-for-regulating-mesocarp-specific-expression-of-the-oil-palm-elaeis-guineensis-jacq-stearoyl-acp-desaturase-gene
#11
Farah Hanan Abu Hanifiah, Siti Nor Akmar Abdullah, Ashida Othman, Noor Azmi Shaharuddin, Halimi Mohd Saud, Hasnul Abdul Hakim Hasnulhadi, Umaiyal Munusamy
TAAAAT and a novel motif, GCTTCA found in the oil palm stearoyl-ACP desaturase (SAD1) promoter are involved in regulating mesocarp-specific expression. Two key fatty acid biosynthetic genes, stearoyl-ACP desaturase (SAD1), and acyl-carrier protein (ACP3) in Elaeis guineensis (oil palm) showed high level of expression during the period of oil synthesis in the mesocarp [12-19 weeks after anthesis (w.a.a.)] and kernel (12-15 w.a.a.). Both genes are expressed in spear leaves at much lower levels and the expression increased by 1...
May 22, 2018: Plant Cell Reports
https://www.readbyqxmd.com/read/29789850/a-ag-synchronously-deposited-and-doped-tio-2-hybrid-as-an-ultrasensitive-sers-substrate-a-multifunctional-platform-for-sers-detection-and-photocatalytic-degradation
#12
Libin Yang, Qinqin Sang, Juan Du, Ming Yang, Xiuling Li, Yu Shen, Xiaoxia Han, Xin Jiang, Bing Zhao
Ag simultaneously deposited and doped TiO2 (Ag-TiO2) hybrid nanoparticles (NPs) were prepared via a sol-hydrothermal method, as both a sensitive surface-enhanced Raman scattering (SERS) substrate and a superior photocatalyst for the first time. Ag-TiO2 hybrid NPs exhibit excellent SERS performance for several probe molecules and the enhancement factor is calculated to be 1.86 × 105. The detection limit of the 4-mercaptobenzoic acid (4-MBA) probe on the Ag-TiO2 substrate is 1 × 10-9 mol L-1, which is four orders of magnitude lower than that on pure TiO2 as a consequence of the synergistic effects of TiO2 and Ag...
May 23, 2018: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/29789673/peatland-vegetation-composition-and-phenology-drive-the-seasonal-trajectory-of-maximum-gross-primary-production
#13
Matthias Peichl, Michal Gažovič, Ilse Vermeij, Eefje de Goede, Oliver Sonnentag, Juul Limpens, Mats B Nilsson
Gross primary production (GPP) is a key driver of the peatland carbon cycle. Although many studies have explored the apparent GPP under natural light conditions, knowledge of the maximum GPP at light-saturation (GPPmax ) and its spatio-temporal variation is limited. This information, however, is crucial since GPPmax essentially constrains the upper boundary for apparent GPP. Using chamber measurements combined with an external light source across experimental plots where vegetation composition was altered through long-term (20-year) nitrogen addition and artificial warming, we could quantify GPPmax in-situ and disentangle its biotic and abiotic controls in a boreal peatland...
May 22, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29789435/molecular-mechanisms-preventing-senescence-in-response-to-prolonged-darkness-in-a-desiccation-tolerant-plant
#14
Meriem Durgud, Saurabh Gupta, Ivan Ivanov, Amin Omidbakhshfard, Maria Benina, Saleh Alseekh, Nikola Staykov, Mareike Hauenstein, Paul Dijkwel, Stefan Hörtensteiner, Valentina Toneva, Yariv Brotman, Alisdair R Fernie, Bernd Mueller-Roeber, Tsanko Gechev
The desiccation-tolerant plant Haberlea rhodopensis can withstand months of darkness without any visible senescence. Here, we investigated the molecular mechanisms of this adaptation to prolonged (30 days) darkness and subsequent return to light. H. rhodopensis plants remained green and viable throughout the dark treatment. Transcriptomic analysis revealed that darkness regulated several transcription factor (TF) genes. Stress- and autophagy-related TFs such as ERF8, HSFA2b, RD26, TGA1, and WRKY33 were upregulated, while chloroplast- and flowering-related TFs such as ATH1, COL2, COL4, RL1, and PTAC7 were repressed...
May 22, 2018: Plant Physiology
https://www.readbyqxmd.com/read/29789171/n-propyl-n-2-pyridylurea-modified-silica-as-mixed-mode-stationary-phase-with-moderate-weak-anion-exchange-capacity-and-ph-dependent-surface-charge-reversal
#15
Stefanie Bäurer, Stefan Polnick, Orlando L Sánchez-Muñoz, Markus Kramer, Michael Lämmerhofer
Herein, we present a novel silica-based stationary phase modified with N-propyl-N'-2-pyridylurea selector. Due to the weakly basic properties of the pyridine selector and the presence of residual silanols after selector immobilization, a zwitterionic surface with a pI observed at approximately pH 5.5 was measured by electrophoretic light scattering in pH-dependent ζ-potential determinations. The capability of the new N-propyl-N'-2-pyridylurea-modified silica to serve as mixed-mode stationary phase was investigated...
May 7, 2018: Journal of Chromatography. A
https://www.readbyqxmd.com/read/29788897/biofilm-destruction-on-endotracheal-tube-associated-pneumonia-by-photodynamic-inactivation
#16
Kate Cristina Blanco, Amanda C Zangirolami, Natalia M Inada, Vanderlei S Bagnato
Hospital infections is a public health problem that can occur with the use of catheters and endotracheal tubes (ETT). Pathogenic microorganisms may adhere to surfaces of these materials forming biofilm. Microbial biofilms presents an extracellular polymer matrix that promotes resistance of microorganisms to factors such as pH, temperature and drugs. The ETT is used to assist a patient with compromised breathing function. ETT biofilm may cause ventilator-associated pneumonia. Pseudomonas aeruginosa and Staphylococcus aureus pneumonia is associated with a 21-fold increase in risk for mechanical ventilation...
May 22, 2018: Infectious Disorders Drug Targets
https://www.readbyqxmd.com/read/29788771/understanding-design-vulnerabilities-in-the-physical-environment-relating-to-patient-fall-patterns-in-a-psychiatric-hospital-seven-years-of-sentinel-events
#17
Sara Bayramzadeh, Margaret Portillo, Candy Carmel-Gilfilen
BACKGROUND: The influence of the physical environment on patient falls has not been fully explored in psychiatric units, despite this patient population's vulnerability and the critical role of the physical environment in patient safety. AIMS: The research objective is to describe the spatial and temporal pattern of falls occurrences and their location in relation to the levels of safety continuum model. METHOD: This article presents an exploratory case study design...
May 1, 2018: Journal of the American Psychiatric Nurses Association
https://www.readbyqxmd.com/read/29788146/leaf-hydraulic-vulnerability-triggers-the-decline-in-stomatal-and-mesophyll-conductance-during-drought-in-rice-oryza-sativa
#18
Xiaoxiao Wang, Tingting Du, Jianliang Huang, Shaobing Peng, Dongliang Xiong
Understanding the physiological responses of crops to drought is important for ensuring sustained crop productivity under climate change, which is expected to exacerbate drought frequencies and intensities. Drought responses involve multiple traits, but the correlations between these traits are poorly understood. Using a variety of techniques, we estimated the changes in gas exchange, leaf hydraulic conductance (Kleaf), and leaf turgor in rice (Oryza sativa) in response to both short- and long-term soil drought and performed a photosynthetic limitation analysis to quantify the contributions of each limiting factor to the resultant overall decrease in photosynthesis during drought...
May 18, 2018: Journal of Experimental Botany
https://www.readbyqxmd.com/read/29787241/conjugated-polyelectrolytes-as-efficient-hole-transport-layers-in-perovskite-light-emitting-diodes
#19
Bo Ram Lee, Jae Choul Yu, Jong Hyun Park, Seungjin Lee, Cheng-Kang Mai, Baodan Zhao, Matthew S Wong, Eui Dae Jung, Yun Seok Nam, Song Yi Park, Daniele Di Nuzzo, Jin Young Kim, Samuel D Stranks, Guillermo C Bazan, Hyosung Choi, Myoung Hoon Song, Richard H Friend
Perovskite-based optoelectronic devices have been rapidly developing in the past 5 years. Since the first report the external quantum efficiency (EQE) of perovskite light-emitting diodes (PeLEDs) has increased rapidly through the control of morphology and structure from 0.1% to more than 11%. Here, we report the use of various conjugated polyelectrolytes (CPEs) as the hole injection layer in PeLEDs. In particular, we find that poly[2,6-(4,4-bis-potassium butanylsulfonate)-4H-cyclopenta-[2,1-b;3,4-b']-dithiophene)] (PCPDT-K) transfers holes effectively, blocks electron transport from the perovskite to the underlying ITO layer and reduces luminescence quenching at the perovskite/PCPDT-K interface...
May 22, 2018: ACS Nano
https://www.readbyqxmd.com/read/29786859/synergistic-effects-of-abiotic-stresses-in-plants-a-case-study-of-nitrogen-limitation-and-saturating-light-intensity-in-arabidopsis-thaliana
#20
Itay Cohen, Tal Rapaport, Vered Chalifa-Caspi, Shimon Rachmilevitch
Under natural conditions, plants are regularly exposed to combinations of stress factors. A common example is the conjunction between nitrogen (N) deficiency and excess light. The combined effect of stress factors is often ignored in studies using controlled conditions, possibly resulting in misleading conclusions. To address this issue, the current study examined the physiological behavior of Arabidopsis thaliana under the effect of varying nitrogen levels and light intensities. The joint influence of low N and excess light had an adverse effect on plant growth, chlorophyll and anthocyanin concentrations, photochemical capacity, and the abundance of proteins involved in carbon assimilation and anti-oxidative metabolism...
May 22, 2018: Physiologia Plantarum
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