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https://www.readbyqxmd.com/read/28934701/hydrothermal-synthesis-of-4zno%C3%A2-b2o3%C3%A2-h2o-ln-3-ln-eu-tb-phosphors-morphology-tunable-and-luminescence-properties
#1
Shiwei Cao, Yang Jiao, Weifang Han, Chunhua Ge, Bo Song, Jie Wang, Xiangdong Zhang
4ZnO·B2O3·H2O:Ln(3+) (Ln=Eu, Tb) phosphors with different morphologies have been successfully synthesized via one-step hydrothermal method through regulating the molar amount of Eu(3+) and Tb(3+). Comprehensive scanning electron microscopy (SEM), X-ray diffraction (XRD) Fourier transform infrared spectrum (FT-IR) and inductively coupled plasma atomic emission spectrometer (ICP-AES) characterizations all confirm that obtained products are 4ZnO·B2O3·H2O:Ln(3+) (Ln=Eu, Tb). The experimental results displayed that the morphology and photoluminescence of compounds is regularly changed with increased the molar amount of rare earth ions...
September 18, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/28934694/development-and-implementation-of-a-pass-fail-field-friendly-method-for-detecting-sildenafil-in-suspect-pharmaceutical-tablets-using-a-handheld-raman-spectrometer-and-silver-colloids
#2
Adam Lanzarotta, Lisa Lorenz, JaCinta S Batson, Cheryl Flurer
A simple, fast, sensitive and effective pass/fail field-friendly method has been developed for detecting sildenafil in suspect Viagra and unapproved tablets using handheld Raman spectrometers and silver colloids. The method involves dissolving a portion of a tablet in water followed by filtration and addition of silver colloids, resulting in a solution that can be measured directly through a glass vial. Over one hundred counterfeit Viagra and unapproved tablets were examined on three different devices during the method development phase of the study...
September 8, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/28934687/the-role-of-thiocyanate-in-enhancing-the-process-of-sulfite-reducing-cr-vi-by-inhibiting-the-formation-of-reactive-oxygen-species
#3
Bo Jiang, Shuaishuai Xin, Yijie Liu, Haihong He, Lin Li, Yizhen Tang, Siyi Luo, Xuejun Bi
The reductive detoxification of Cr(VI) by sulfite is known as the prevailing strategy and can be successfully implemented for the treatment of Cr(VI)-contaminated waters. However, this method inevitably faces the challenges of excessive consumption of sulfite due to the generations of highly oxidative OH and SO4(-) during the process of sulfite reducing Cr(VI). In this study, we find that a small quantity of thiocyanate (SCN) can catalytically enhance the process efficiency of Cr(VI) reduction by sulfite and effectively prevent the excessive consumption of sulfite...
September 12, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28934547/multifunctional-hybrid-compounds-derived-from-2-2-5-dioxopyrrolidin-1-yl-3-methoxypropanamides-with-anticonvulsant-and-antinociceptive-properties
#4
Michał Abram, Mirosław Zagaja, Szczepan Mogilski, Marta Andres-Mach, Gniewomir Latacz, Sebastian Baś, Jarogniew J Łuszczki, Katarzyna Kieć-Kononowicz, Krzysztof Kamiński
The focused set of new pyrrolidine-2,5-diones as potential broad-spectrum hybrid anticonvulsants was described. These derivatives integrate on the common structural scaffold the chemical fragments of well-known antiepileptic drugs such as ethosuximide, levetiracetam, and lacosamide. Such hybrids demonstrated effectiveness in two of the most widely used animal seizure models, namely, the maximal electroshock (MES) test and the psychomotor 6 Hz (32 mA) seizure model. Compound 33 showed the highest anticonvulsant activity in these models (ED50 MES = 79...
September 21, 2017: Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28934293/generation-of-a-pancreatic-cancer-model-using-a-pdx1-flp-recombinase-knock-in-allele
#5
Jinghai Wu, Xin Liu, Sunayana G Nayak, Jason R Pitarresi, Maria C Cuitiño, Lianbo Yu, Blake E Hildreth, Katie A Thies, Daniel J Schilling, Soledad A Fernandez, Gustavo Leone, Michael C Ostrowski
The contribution of the tumor microenvironment to the development of pancreatic adenocarcinoma (PDAC) is unclear. The LSL-KrasG12D/+;LSL-p53R172H/+;Pdx-1-Cre (KPC) tumor model, which is widely utilized to faithfully recapitulate human pancreatic cancer, depends on Cre-mediated recombination in the epithelial lineage to drive tumorigenesis. Therefore, specific Cre-loxP recombination in stromal cells cannot be applied in this model, limiting the in vivo investigation of stromal genetics in tumor initiation and progression...
2017: PloS One
https://www.readbyqxmd.com/read/28934238/a-tool-to-automatically-analyze-electromagnetic-tracking-data-from-high-dose-rate-brachytherapy-of-breast-cancer-patients
#6
Th I Götz, G Lahmer, V Strnad, Ch Bert, B Hensel, A M Tomé, E W Lang
During High Dose Rate Brachytherapy (HDR-BT) the spatial position of the radiation source inside catheters implanted into a female breast is determined via electromagnetic tracking (EMT). Dwell positions and dwell times of the radiation source are established, relative to the patient's anatomy, from an initial X-ray-CT-image. During the irradiation treatment, catheter displacements can occur due to patient movements. The current study develops an automatic analysis tool of EMT data sets recorded with a solenoid sensor to assure concordance of the source movement with the treatment plan...
2017: PloS One
https://www.readbyqxmd.com/read/28934215/tracing-the-temporal-stability-of-autism-spectrum-diagnosis-and-severity-as-measured-by-the-autism-diagnostic-observation-schedule-a-systematic-review-and-meta-analysis
#7
Łucja Bieleninik, Maj-Britt Posserud, Monika Geretsegger, Grace Thompson, Cochavit Elefant, Christian Gold
BACKGROUND: Exploring ways to improve the trajectory and symptoms of autism spectrum disorder is prevalent in research, but less is known about the natural prognosis of autism spectrum disorder and course of symptoms. The objective of this study was to examine the temporal stability of autism spectrum disorder and autism diagnosis, and the longitudinal trajectories of autism core symptom severity. We furthermore sought to identify possible predictors for change. METHODS: We searched PubMed, PsycInfo, EMBASE, Web of Science, Cochrane Library up to October 2015 for prospective cohort studies addressing the autism spectrum disorder/autism diagnostic stability, and prospective studies of intervention effects...
2017: PloS One
https://www.readbyqxmd.com/read/28934093/combined-prenatal-pesticide-exposure-and-folic-acid-intake-in-relation-to-autism-spectrum-disorder
#8
Rebecca J Schmidt, Vladimir Kogan, Janie F Shelton, Lora Delwiche, Robin L Hansen, Sally Ozonoff, Claudia C Ma, Erin C McCanlies, Deborah H Bennett, Irva Hertz-Picciotto, Daniel J Tancredi, Heather E Volk
BACKGROUND: Maternal folic acid (FA) protects against developmental toxicity from certain environmental chemicals. OBJECTIVE: We examined combined exposures to maternal FA and pesticides in relation to autism spectrum disorder (ASD). METHODS: Participants were California children born from 2000-2007 who were enrolled in the Childhood Autism Risks from Genetics and the Environment (CHARGE) case-control study at age 2-5 y, were clinically confirmed to have ASD (n=296) or typical development (n=220), and had information on maternal supplemental FA and pesticide exposures...
September 8, 2017: Environmental Health Perspectives
https://www.readbyqxmd.com/read/28933930/autism-spectrum-disorder-among-us-children-2002-2010-socioeconomic-racial-and-ethnic-disparities
#9
Maureen S Durkin, Matthew J Maenner, Jon Baio, Deborah Christensen, Julie Daniels, Robert Fitzgerald, Pamela Imm, Li-Ching Lee, Laura A Schieve, Kim Van Naarden Braun, Martha S Wingate, Marshalyn Yeargin-Allsopp
OBJECTIVES: To describe the association between indicators of socioeconomic status (SES) and the prevalence of autism spectrum disorder (ASD) in the United States during the period 2002 to 2010, when overall ASD prevalence among children more than doubled, and to determine whether SES disparities account for ongoing racial and ethnic disparities in ASD prevalence. METHODS: We computed ASD prevalence and 95% confidence intervals (CIs) from population-based surveillance, census, and survey data...
September 21, 2017: American Journal of Public Health
https://www.readbyqxmd.com/read/28933790/is-it-time-to-retire-fragile-x-testing-as-a-first-tier-test-for-developmental-delay-intellectual-disability-and-autism-spectrum-disorder
#10
Sureni V Mullegama, Steven D Klein, Dzung C Nguyen, Arang Kim, Rebecca Signer, Michelle Fox, Naghmeh Dorrani, Andrea Hendershot, Rebecca Mardach, Robert Suddath, Katrina Dipple, Eric Vilain, Derek A Wong, Joshua L Deignan, Stephen D Cederbaum, Wayne W Grody, Julian A Martinez-Agosto
No abstract text is available yet for this article.
September 21, 2017: Genetics in Medicine: Official Journal of the American College of Medical Genetics
https://www.readbyqxmd.com/read/28933556/the-assembly-behavior-of-organically-interlinked-gold-nanoparticle-composite-films-a-quartz-crystal-microbalance-investigation
#11
Yelyena Daskal, Tina Tauchnitz, Frederic Güth, Rosemarie Dittrich, Yvonne Joseph
Thin films based on dodecylamine stabilized gold nanoparticles interlinked with different organic molecules are prepared by automatic layer-by-layer self-assembly in a microfluidic quartz crystal microbalance (QCM) cell, to obtain an in-situ insight on the film formation by ligand/linker exchange reactions. The influence of interlinking functional groups and the length of the organic linker molecule on assembly behavior is investigated. Namely alkyldithiols with different lengths are compared to alkyldiamines and alkylbisdithiocarbamates with a C8 alkylic molecular backbone...
September 21, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28933548/investigation-of-structure-and-crystallization-behavior-of-poly-butylene-succinate-by-fourier-transform-infrared-spectroscopy
#12
Shu-Fang Yao, Xiao-Tong Chen, Hai-Mu Ye
The detailed structure and crystallization behavior of poly(butylene succinate) (PBS) have been investigated by Fourier transform infrared (FTIR) and other methods systematically. For the first time, we confirmed that the C=O stretching modes of PBS can respond to three distinguish absorption bands in the FTIR spectrum, at around 1736, 1720 and 1714 cm-1 respectively. The 1736 cm-1 band is adopted as the stretching mode of C=O groups in free amorphous fraction (MAF); the 1714 cm-1 band which is relevant to more stable structure, displays more anisotropic in polarized FTIR spectra, and has been confirmed as stretching vibrations of hydrogen-bonded C=O groups in the crystalline phase...
September 21, 2017: Journal of Physical Chemistry. B
https://www.readbyqxmd.com/read/28933458/suppression-of-fragmentation-in-multiphoton-ionization-mass-spectrometry-using-a-near-infrared-femtosecond-laser-as-an-ionization-source
#13
Adan Li, Thang Phan Dinh, Tomoko Imasaka, Totaro Imasaka
The ionization and fragmentation processes for pentachlorobenzene were examined using a femtosecond laser emitting at 400, 800, and 1200 nm. A molecular ion was clearly observed in the mass spectrum, since the molecule can be directly ionized from the singlet electronic exited state before relaxation to triplet levels, because the pulse width of the laser is shorter than the lifetime of the excited state. Fragmentation was minimal at 1200 nm, in contrast to ionization at 800 and 400 nm. Indeed, a doubly-charged molecular ion was prominent at 800 nm, owing to the absorption band of the singly-charged molecular ion at this wavelength...
September 21, 2017: Analyst
https://www.readbyqxmd.com/read/28933363/the-spectrum-of-neurological-manifestations-associated-with-gaucher-disease
#14
REVIEW
Tamanna Roshan Lal, Ellen Sidransky
Gaucher disease, the most common lysosomal storage disorder, is due to a deficiency in the enzyme glucocerebrosidase. This leads to the accumulation of its normal substrate, glucocerebroside, in tissue macrophages, affecting the hematological, visceral, bone and neurologic systems. Gaucher disease is classified into three broad phenotypes based upon the presence or absence of neurological involvement: type 1 (non-neuronopathic), type 2 (acute neuronopathic), and type 3 (subacute neuronopathic). Phenotypically, there is a wide spectrum of visceral and neurological manifestations...
March 2, 2017: Diseases (Basel)
https://www.readbyqxmd.com/read/28933218/effects-of-human-es-derived-neural-stem-cell-transplantation-and-kindling-in-a-rat-model-of-traumatic-brain-injury
#15
Stefania Beretta, Kelly M Cunningham, Daniel L Haus, Eric M Gold, Harvey Perez, Luci López-Velázquez, Brian J Cummings
Traumatic brain injury (TBI) is one of the leading causes of death and disability in the population worldwide, with a broad spectrum of symptoms and disabilities. Posttraumatic hyperexcitability is one of the most common neurological disorders that affect people after a head injury. A reliable animal model of posttraumatic hyperexcitability induced by TBI which allows one to test effective treatment strategies is yet to be developed. To address these issues, in the present study, we tested human embryonic stem cell-derived neural stem cell (NSC) transplantation in an animal model of posttraumatic hyperexcitability in which the brain injury was produced in one hemisphere of immunodeficient athymic nude rats by controlled cortical impact, and spontaneous seizures were produced by repeated electrical stimulation (kindling) in the contralateral hemisphere...
July 2017: Cell Transplantation
https://www.readbyqxmd.com/read/28933131/the-clinical-spectrum-of-primary-sj%C3%A3-gren-s-syndrome-beyond-exocrine-glands
#16
M C Leone, A Alunno, G Cafaro, V Valentini, E Marcucci, E Bartoloni, R Gerli
Although primary Sjögren's syndrome (pSS) is a mild indolent chronic disease mainly characterized by mucosal dryness in the majority of cases, a consistent subgroup of patients display extra-glandular manifestations. Virtually any organs and systems can be affected, leading to a more serious disease prognosis. Therefore, the prompt identification of patients at higher risk of extra-glandular manifestations is necessary to start a thorough follow up and an aggressive treatment. The aim of this review article is to provide an overview of epidemiological, clinical and serological features of extra-glandular manifestations in pSS as well as current knowledge about putative biomarkers useful in clinical practice...
September 21, 2017: Reumatismo
https://www.readbyqxmd.com/read/28933093/-effect-of-protein-intervention-on-amino-acid-metabolism-spectrum-of-qi-and-yin-deficiency-type-2-diabetic-rats
#17
Li-Na Ma, Xin-Min Mao, Xiao-Li Ma, Lin-Lin Li, Ye Wang, Yi-Cun Tao, Jing-Wei Wang, Jia-Jia Guo, Yi Lan
To study the effect of plant protein and animal protein on amino acid metabolism spectrum of Qi and Yin deficiency type 2 diabetic rats. 110 male SD rats were randomly divided into blank group (n=10), diabetic model group (n=20), disease-symptoms group (n=80). The rats of blank group received ordinary feeding, while other groups were fed with high sugar and fat diets. During the whole process of feeding, rats of disease-symptoms group were given with Qingpi-Fuzi (15.75 g•kg⁻¹) once a day through oral administration...
November 2016: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
https://www.readbyqxmd.com/read/28933090/-comparative-studies-on-hplc-fingerprint-and-near-infrared-spectra-of-cultivated-and-reference-crude-scutellaria-baicalensis
#18
Jian-Jun Zhao, Xiao-Juan Gao, Ying-Hua Wang, Ling Ma, Han-Qing Wang
Scutellaria baicalensis is a common and important medicinal plant in China, facing with reducing sharply in wild resources. To meet the needs in Chinese herbwouls medicine market and clinical application, S. baicalensis has been widely cultivated in Ningxia, Hebei, Shanxi, and Gansu et al. HPLC finger-print and near-infrared were studied in the research to evaluate quality difference of S. baicalensis in four districts. The results showed that the similarity of HPLC finger-print of 12 cultivated S. baicalensis and reference crude herb is more than 0...
November 2016: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
https://www.readbyqxmd.com/read/28933070/variations-in-the-endogenous-fluorescence-of-rabbit-corneas-after-mechanical-property-alterations
#19
Antonio Ortega-Martinez, Genna Touchette, Hong Zhu, Irene E Kochevar, Walfre Franco
Keratoconus is an eye disease in which the cornea progressively deforms due to loss of cornea mechanical rigidity, and thus causes deterioration of visual acuity. Techniques to characterize the mechanical characteristics of the cornea are important to better monitor changes and response to treatments. To investigate the feasibility of using the endogenous fluorescence of cornea for monitoring alterations of its mechanical rigidity, linear tensiometry was used to quantitate stiffness and Young's modulus (YM) after treatments that increase cornea stiffness (collagen photocross-linking) or decrease stiffness (enzymatic digestion)...
September 2017: Journal of Biomedical Optics
https://www.readbyqxmd.com/read/28932960/validation-of-the-repetitive-behavior-scale-revised-in-spanish-speakers-participants-with-autism-spectrum-disorder
#20
A E Martínez-González, J A Piqueras
Restricted and repetitive behavior (RRB) is one of the two key diagnostic features of autism spectrum disorder (ASD). DSM-5 highlights the importance of severity-based diagnostic modifiers assigned on the basis of intensity of needed supports. Therefore, there is a need for available measures that assess the severity of RRB. The repetitive behavior scale-revised (RBS-R) is probably the most used informant-based rating scale for the assessment of RRB and interests observed in ASD. The present study examined the psychometric properties of the Spanish version of the RBS-R in a sample of 233 participants with ASD, aged 3 to 63 years...
September 20, 2017: Journal of Autism and Developmental Disorders
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