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https://www.readbyqxmd.com/read/28822247/mobile-phones-an-asset-or-a-liability-a-study-based-on-characterization-and-assessment-of-metals-in-waste-mobile-phone-components-using-leaching-tests
#1
Meenakshi Hira, Sudesh Yadav, P Morthekai, Anurag Linda, Sushil Kumar, Anupam Sharma
The prolonged use of old fashioned gadgets, especially mobile phones, is declining readily with the advancement in technology which ultimately lead to generation of e-waste. The present study investigates the concentrations of nine metals (Ba, Cd, Cr, Cu, Fe, Ni, Pb, Sn, and Zn) in various components of the mobile phones using Toxicity Characteristic Leaching Procedure (TCLP), Waste Extraction Test (WET) and Synthetic Precipitation Leaching Procedure (SPLP). The results were compared with the threshold limits for hazardous waste defined by the California Department of Toxic Substances Control (CDTSC) and United States Environmental Protection Agency (USEPA)...
August 5, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28821664/differential-desensitization-observed-at-multiple-effectors-of-somatic-mu-opioid-receptors-underlies-sustained-agonist-mediated-inhibition-of-proopiomelanocortin-neuron-activity
#2
Philip D Fox, Shane T Hentges
Activation of somatic mu opioid receptors (MORs) in hypothalamic proopiomelanocortin (POMC) neurons leads to the activation of G-protein-coupled inward rectifier potassium (GIRK) channels and hyperpolarization, but in response to continued signaling, MORs undergo acute desensitization resulting in robust reduction in the peak GIRK current after minutes of agonist exposure. We hypothesized that the attenuation of the GIRK current would lead to a recovery of neuronal excitability whereby desensitization of the receptor would lead to a new steady-state of POMC neuron activity reflecting the sustained GIRK current observed after the initial decline from peak with continued agonist exposure...
August 7, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28820977/a-newly-validated-and-characterized-spectrophotometric-method-for-determination-of-a-three-water-pollutants-metal-ions
#3
Marwa E Mohamed, Eman Y Z Frag, Mona A Mohamed
A simple, fast and accurate spectrophotometric method had been developed to determine lead (II), chromium (III) and barium (II) ions in pure forms and in spiked water samples using thoron (THO) as a reagent forming colored complexes. It was found that the formed complexes absorbed maximally at 539, 540 and 538nm for Pb(II)-THO, Cr(III)-THO and Ba(II)-THO complexes, respectively. The optimum experimental conditions for these complexes had been studied carefully. Beer's law was obeyed in the range 1-35, 1-70, and 1-45μgmL(-1) for Pb (II), Cr(III) and Ba(II) ions with THO reagent, respectively...
August 9, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/28819683/an-iphone-application-using-a-novel-stool-color-detection-algorithm-for-biliary-atresia-screening
#4
Eri Hoshino, Kuniyoshi Hayashi, Mitsuyoshi Suzuki, Masayuki Obatake, Kevin Y Urayama, Satoshi Nakano, Yasuyuki Taura, Masaki Nio, Osamu Takahashi
BACKGROUND: The stool color card has been the primary tool for identifying acholic stools in infants with biliary atresia (BA), in several countries. However, BA stools are not always acholic, as obliteration of the bile duct occurs gradually. This study aims to introduce Baby Poop (Baby unchi in Japanese), a free iPhone application, employing a detection algorithm to capture subtle differences in colors, even with non-acholic BA stools. METHODS: The application is designed for use by caregivers of infants aged approximately 2 weeks-1 month...
August 17, 2017: Pediatric Surgery International
https://www.readbyqxmd.com/read/28819117/neuronal-encoding-of-self-and-others-head-rotation-in-the-macaque-dorsal-prefrontal-cortex
#5
M Lanzilotto, M Gerbella, V Perciavalle, C Lucchetti
Following gaze is a crucial skill, in primates, for understanding where and at what others are looking, and often requires head rotation. The neural basis underlying head rotation are deemed to overlap with the parieto-frontal attention/gaze-shift network. Here, we show that a set of neurons in monkey's Brodmann area 9/46dr (BA 9/46dr), which is involved in orienting processes and joint attention, becomes active during self head rotation and that the activity of these neurons cannot be accounted for by saccade-related activity (head-rotation neurons)...
August 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28818401/impact-of-co-landfill-proportion-of-bottom-ash-and-municipal-solid-waste-composition-on-the-leachate-characteristics-during-the-acidogenesis-phase
#6
Pin-Jing He, Hong-Xia Pu, Li-Ming Shao, Hua Zhang
Incineration has become an important municipal solid waste (MSW) treatment strategy, and generates a large amount of bottom ash (BA). Although some BA is reused, much BA and pretreatment residues from BA recycling are disposed in landfill. When BA and MSW are co-landfilled together, acid neutralization capacity and alkaline earth metal dissolution of BA, as well as different components of MSW may change environmental conditions within the landfill, so the degradation of organic matter and the physical and chemical properties of leachate would be affected...
August 14, 2017: Waste Management
https://www.readbyqxmd.com/read/28816450/facile-synthesis-magnetic-and-electric-characterization-of-mixed-valence-la0-75k0-25amntio6-a-sr-and-ba-perovskites
#7
Ganghua Zhang, Haijie Chen, Zheming Gu, Peizhi Zhang, Tao Zeng, Fuqiang Huang
A new series of mixed valence perovskites, La0.75K0.25AMnTiO6 (A = Sr and Ba) nanocubes, have been synthesized by a mild hydrothermal route. From powder X-ray diffraction (XRD) analysis, the crystal structure of La0.75K0.25AMnTiO6 was solved as the orthorhombic symmetry (space group Pbnm) with a random A-site or B-site arrangement. The phase purity of the products was confirmed by ICP, SEM, and EDS analyses, and the oxidation states of the B-site metal atoms were determined to be +4 for Ti and +3/+4 for Mn from XPS results...
August 17, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28815454/effects-of-se-and-cd-co-treatment-on-the-morphology-oxidative-stress-and-ion-concentrations-in-the-ovaries-of-laying-hens
#8
Jianhong Li, Lu Xing, Runxiang Zhang
This study aims at revealing the effects of the combined treatment of selenium and cadmium on ovary morphology, oxidative stress, and 28 kinds of ion concentrations in laying hens. In this experiment, 128 healthy 31-week-old chickens were selected and divided into four treatment groups, three of which were separately fed the basic diets supplemented with either Se or Cd or both Se and Cd for 90 days, and the remaining group was fed the basic diet and treated as a control. The chickens were sacrificed for collecting ovarian tissues...
August 16, 2017: Biological Trace Element Research
https://www.readbyqxmd.com/read/28815179/interleukin-17-can-induce-osteoarthritis-in-rabbit-knee-joints-similar-to-hulth-s-method
#9
Zili Wang, Chenhuang Zheng, Yunbin Zhong, Jinshen He, Xu Cao, Hansong Xia, Hongliang Ba, Pei Li, Song Wu, Cheng Peng
Interleukin-17 (IL-17) is closely related to osteoarthritis (OA), but animal studies that employ IL-17 to induce OA are currently lacking. Therefore, this study evaluated the effect of IL-17 in the rabbit knee joint. The right knees served as the control group. The left knees were divided randomly into 4 groups: a Hulth group and 3 IL-17 groups (1-ng, 10-ng, and 50-ng groups). OA was induced in the Hulth group using Hulth's method. The IL-17 groups were injected with 1, 10, or 50 ng of IL-17 as indicated. Specimens were collected at 72 h, 1 week, 3 weeks, 6 weeks, and 12 weeks after surgery or the last injection...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28814920/garcinia-hopii-clusiaceae-a-new-species-from-bidoup-nui-ba-national-park-southern-vietnam
#10
Hironori Toyama, Van-Son Dang, Shuichiro Tagane, Ngoc Van Nguyen, Akiyo Naiki, Hidetoshi Nagamasu, Tetsukazu Yahara
A new species, Garcinia hopii H.Toyama & V.S.Dang is described from Bidoup Nui Ba National Park, southern Vietnam. This species is similar to Garcinia hendersoniana Whitmore but differs from that species in having larger leaves, clustered pistillate flowers, a greater number of sterile anthers and a larger stigma of young fruits. A description, preliminary conservation assessment, illustration, photographs and DNA barcodes of the new species are provided, as well as an updated key to Garcinia sect. Hebradendron in Indochina...
2017: PhytoKeys
https://www.readbyqxmd.com/read/28814914/body-height-of-children-with-bronchial-asthma-of-various-severities
#11
Tatiana I Eliseeva, Natalia A Geppe, Elena V Tush, Olga V Khaletskaya, Ivan I Balabolkin, Vilya A Bulgakova, Nailya I Kubysheva, Stanislav K Ignatov
Influence of bronchial asthma (BA) severity on physical development in children patients was evaluated in comparison with healthy population. Materials and Methods. 1042 children and adolescents (768 boys) with atopic BA were evaluated. All children underwent standard examination in a clinical setting, including anthropometry. The control group included 875 healthy children of a comparable age (423 boys). Results. The fraction of patients with the normal, lower, and increased height among the whole group of patients with BA is close to the corresponding values in the healthy population (χ(2) = 3...
2017: Canadian Respiratory Journal: Journal of the Canadian Thoracic Society
https://www.readbyqxmd.com/read/28814870/abnormal-intrinsic-functional-hubs-in-alcohol-dependence-evidence-from-a-voxelwise-degree-centrality-analysis
#12
Xiaoping Luo, Linghong Guo, Xi-Jian Dai, Qinglai Wang, Wenzhong Zhu, Xinjun Miao, Honghan Gong
OBJECTIVE: To explore the abnormal intrinsic functional hubs in alcohol dependence using voxelwise degree centrality analysis approach, and their relationships with clinical features. MATERIALS AND METHODS: Twenty-four male alcohol dependence subjects free of medicine (mean age, 50.21±9.62 years) and 24 age- and education-matched male healthy controls (mean age, 50.29±8.92 years) were recruited. The alcohol use disorders identification test and the severity of alcohol dependence questionnaire (SADQ) were administered to assess the severity of alcohol craving...
2017: Neuropsychiatric Disease and Treatment
https://www.readbyqxmd.com/read/28814435/adaptive-global-innovative-learning-environment-for-glioblastoma-gbm-agile
#13
Brian M Alexander, Sujuan Ba, Mitchel S Berger, Donald A Berry, Webster K Cavenee, Susan M Chang, Timothy F Cloughesy, Tao Jiang, Mustafa Khasraw, Wenbin Li, Robert Mittman, George H Poste, Patrick Y Wen, W K Alfred Yung, Anna D Barker
Glioblastoma (GBM) is a deadly disease with few effective therapies. While much has been learned about the molecular characteristics of the disease, this knowledge has not been translated into clinical improvements for patients. At the same time, many new therapies are being developed. Many of these therapies have potential biomarkers to identify responders. The result is an enormous amount of testable clinical questions that must be answered efficiently. The GBM Adaptive Global Innovative Learning Environment (GBM AGILE) is a novel, multi-arm, platform trial designed to address these challenges...
August 16, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/28813098/modeling-and-mapping-basal-area-of-pinus-taeda-l-plantation-using-airborne-lidar-data
#14
Carlos A Silva, Carine Klauberg, Andrew T Hudak, Lee A Vierling, Scott J Fennema, Ana Paula D Corte
Basal area (BA) is a good predictor of timber stand volume and forest growth. This study developed predictive models using field and airborne LiDAR (Light Detection and Ranging) data for estimation of basal area in Pinus taeda plantation in south Brazil. In the field, BA was collected from conventional forest inventory plots. Multiple linear regression models for predicting BA from LiDAR-derived metrics were developed and evaluated for predictive power and parsimony. The best model to predict BA from a family of six models was selected based on corrected Akaike Information Criterion (AICc) and assessed by the adjusted coefficient of determination (adj...
August 14, 2017: Anais da Academia Brasileira de Ciências
https://www.readbyqxmd.com/read/28812880/an-exceptionally-narrow-band-gap-%C3%A2-4-ev-silicate-predicted-in-the-cubic-perovskite-structure-basio3
#15
Hidenori Hiramatsu, Hitoshi Yusa, Ryo Igarashi, Yasuo Ohishi, Toshio Kamiya, Hideo Hosono
The electronic structures of 35 A(2+)B(4+)O3 ternary cubic perovskite oxides, including their hypothetical chemical compositions, were calculated by a hybrid functional method with the expectation that peculiar electronic structures and unique carrier transport properties suitable for semiconductor applications would be hidden in high-symmetry cubic perovskite oxides. We found unique electronic structures of Si-based oxides (A = Mg, Ca, Sr, and Ba, and B = Si). In particular, the unreported cubic BaSiO3 has a very narrow band gap (4...
August 16, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28812077/a-first-principles-study-of-p-type-defects-in-lacro3
#16
Samira Dabaghmanesh, Nasrin Sarmadian, Erik C Neyts, Bart Partoens
Recently, Sr-doped LaCrO3 has been experimentally introduced as a new p-type transparent conducting oxide. It is demonstrated that substituting Sr for La results in inducing p-type conductivity in LaCrO3. Performing first principles calculations we study the electronic structure and formation energy of various point defects in LaCrO3. Our results for the formation energies show that in addition to Sr, two more divalent defects, Ca and Ba, substituting for La in LaCrO3, behave as shallow acceptors in line with previous experimental reports...
August 16, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28812043/swallowing-markers-in-spinal-and-bulbar-muscular-atrophy
#17
Haruhiko Banno, Masahisa Katsuno, Keisuke Suzuki, Seiya Tanaka, Noriaki Suga, Atsushi Hashizume, Tomoo Mano, Amane Araki, Hirohisa Watanabe, Yasushi Fujimoto, Masahiko Yamamoto, Gen Sobue
OBJECTIVE: We examined the characteristics of dysphagia in spinal and bulbar muscular atrophy, a hereditary neuromuscular disease causing weakness of limb, facial, and oropharyngeal muscles via a videofluoroscopic swallowing study, and investigated the plausibility of using these outcome measures for quantitative analysis. METHODS: A videofluoroscopic swallowing study was performed on 111 consecutive patients with genetically confirmed spinal and bulbar muscular atrophy and 53 age- and sex-matched healthy controls...
August 2017: Annals of Clinical and Translational Neurology
https://www.readbyqxmd.com/read/28811573/simultaneous-separation-of-actinium-and-radium-isotopes-from-a-proton-irradiated-thorium-matrix
#18
Tara Mastren, Valery Radchenko, Allison Owens, Roy Copping, Rose Boll, Justin R Griswold, Saed Mirzadeh, Lance E Wyant, Mark Brugh, Jonathan W Engle, Francois M Nortier, Eva R Birnbaum, Kevin D John, Michael E Fassbender
A new method has been developed for the isolation of (223,224,225)Ra, in high yield and purity, from a proton irradiated (232)Th matrix. Herein we report an all-aqueous process using multiple solid-supported adsorption steps including a citrate chelation method developed to remove >99.9% of the barium contaminants by activity from the final radium product. A procedure involving the use of three columns in succession was developed, and the separation of (223,224,225)Ra from the thorium matrix was obtained with an overall recovery yield of 91 ± 3%, average radiochemical purity of 99...
August 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28810732/tracking-radionuclide-fractionation-in-the-first-atomic-explosion-using-stable-elements
#19
Chloe E Bonamici, Richard L Hervig, William S Kinman
Compositional analysis of post-detonation fallout is a tool for forensic identification of nuclear devices. However, the relationship between device composition and fallout composition is difficult to interpret because of the complex combination of physical mixing, nuclear reactions, and chemical fractionations that occur in the chaotic nuclear fireball. Using a combination of in situ microanalytical techniques - electron microprobe analysis and secondary ion mass spectrometry - we show that some heavy stable elements (Rb, Sr, Zr, Ba, Cs, Ba, La, Ce, Nd, Sm, Dy, Lu, U, Th) in glassy fallout from the first nuclear test, Trinity, are reliable chemical proxies for radionuclides generated during the explosion...
August 16, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28809973/competitive-affinity-based-proteome-profiling-and-imaging-to-reveal-potential-cellular-targets-of-betulinic-acid
#20
Haijun Guo, Jiaqian Xu, Piliang Hao, Ke Ding, Zhengqiu Li
Betulinic acid (BA), a pentacyclic triterpenoid natural product, has received considerable attention owing to the broad spectrum of biological activities such as anti-HIV, anti-inflammatory, and especially, antitumor. Despite numerous studies on the antitumor mechanisms over the past decade, the cellular targets in cancer cells remain obscure. Here, we developed two photoprobes, BA-1/BA-2, by attaching terminal alkyne-containing "minimalist" tetrazole/diazirine photo-crosslinkers (L3 and L7) at the C-3 and C-28 positions of BA, respectively, based on well-established structure-activity relationships...
August 15, 2017: Chemical Communications: Chem Comm
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