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https://www.readbyqxmd.com/read/28651324/preparation-of-activated-carbon-from-molasses-to-ethanol-process-waste-vinasse-and-its-performance-as-adsorbent-material
#1
Omer Kazak, Yasin Ramazan Eker, Haluk Bingol, Ali Tor
Herein, the preparation of activated carbon from waste vinasse by using hydrothermal H2O2 oxidation combined with a two-step pyrolysis process has been described for the first time as a new utilization approach for the waste vinasse. The characterization studies were performed by TGA, FT-IR, Raman spectroscopy, SEM-EDX and gas adsorption measurements. The approach generated a microporous activated carbon with high specific surface area (989m(2)/g) from waste vinasse. After simple experiments on various dye solutions, adsorption performance of the activated carbon was specifically studied on the methylene blue solution as functions of solution pH, contact time, adsorbent amount and reusability...
June 13, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28651320/an-efficient-production-of-high-pure-xylooligosaccharides-from-corncob-with-affinity-adsorption-enzymatic-reaction-integrated-approach
#2
Siyuan Chang, Jianlin Chu, Yalan Guo, Huo Li, Bin Wu, Bingfang He
Xylooligosaccharides (XOS) are high value-added ingredients for functional foods and they have potential use as prebiotics. In order to reduce the production cost of XOS, we constructed a fusion enzyme consisting of expansin and endo-xylanase from B. subtilis Lucky9 to produce high-pure XOS with affinity adsorption-enzymatic reaction integrated approach. By optimization of inserting linker, the specific xylanase activity of fusion enzyme with R2 linker was increased 1.28-fold than that of native xylanase. Electrophoretic pure fusion enzyme was separated from crude enzyme extracts by affinity adsorption on corncob substrate, with 90...
June 6, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28651289/a-validated-method-for-the-quality-control-of-andrographis-paniculata-preparations
#3
Anastasia Karioti, Patricia Timoteo, Maria Camilla Bergonzi, Anna Rita Bilia
Andrographis paniculata is a herbal drug of Asian traditional medicine largely employed for the treatment of several diseases. Recently, it has been introduced in Europe for the prophylactic and symptomatic treatment of common cold and as an ingredient of dietary supplements. The active principles are diterpenes with andrographolide as the main representative. In the present study, an analytical protocol was developed for the determination of the main constituents in the herb and preparations of A. paniculata...
June 26, 2017: Planta Medica
https://www.readbyqxmd.com/read/28651264/-inpatient-equivalent-treatment-according-to-%C3%A2-%C3%A2-115d-sgb-v-a-first-step-towards-various-treatments-in-home-environment
#4
Iris Hauth
No abstract text is available yet for this article.
June 26, 2017: Psychiatrische Praxis
https://www.readbyqxmd.com/read/28651217/modeling-in-sewer-transformations-at-catchment-scale-implications-on-drug-consumption-estimates-in-wastewater-based-epidemiology
#5
Ann-Kathrin McCall, Rocco Palmitessa, Frank Blumensaat, Eberhard Morgenroth, Christoph Ort
To which extent illicit drugs are transformed during in-sewer transport, depends on a number of factors: i) substance-specific transformation rates, ii) environmental conditions, iii) point of discharge (location of drug user) and iv) sewer network properties, primarily hydraulic residence time (HRT) and the ratio of biofilm contact area to wastewater volume (A/Veq). Assessing associated uncertainties typically requires numerous simulations. Therefore, we propose a new two-step modeling framework: 1) Quantify hydrodynamic conditions...
May 20, 2017: Water Research
https://www.readbyqxmd.com/read/28651215/anticipatory-postural-adjustment-patterns-during-gait-initiation-across-the-adult-lifespan
#6
Chiahao Lu, Sommer L Amundsen Huffmaster, Jack C Harvey, Colum D MacKinnon
Gait initiation involves a complex sequence of anticipatory postural adjustments (APAs) during the transition from steady state standing to forward locomotion. APAs have four core components that function to accelerate the center of mass forwards and towards the initial single-support stance limb. These components include loading of the initial step leg, unloading of the initial stance leg, and excursion of the center of pressure in the posterior and lateral (towards the stepping leg) directions. This study examined the incidence, magnitude, and timing of these components and how they change across the lifespan (ages 20-79)...
June 16, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28651176/forensic-applications-of-direct-analysis-in-real-time-dart-coupled-to-q-orbitrap-tandem-mass-spectrometry-for-the-in-situ-analysis-of-pigments-from-paint-evidence
#7
Tai-Hung Chen, Shu-Pao Wu
The accurate examination of paint fragments obtained from an accident, such as those obtained from vehicles involved in a hit-and-run case, is often critical in forensic investigations. However, organic pigments are typically minor components of automotive coatings, which makes discrimination difficult. In this study, direct analysis in real time coupled to Q-orbitrap tandem mass spectrometry (DART-MS) was employed to detect a wide range of common organic pigments in vehicle paints. Twelve common organic pigments used in vehicle paints, such as red, yellow, orange, and purple, were tested, and a database was constructed for future examinations of vehicle paint...
June 9, 2017: Forensic Science International
https://www.readbyqxmd.com/read/28651167/error-prone-bypass-of-o-6-methylguanine-by-dna-polymerase-of-pseudomonas-aeruginosa-phage-pap1
#8
Shiling Gu, Jingyuan Xiong, Ying Shi, Jia You, Zhenyu Zou, Xiaoying Liu, Huidong Zhang
O(6)-Methylguanine (O(6)-MeG) is highly mutagenic and is commonly found in DNA exposed to methylating agents, generally leads to G:C to A:T mutagenesis. To study DNA replication encountering O(6)-MeG by the DNA polymerase (gp90) of P. aeruginosa phage PaP1, we analyzed steady-state and pre-steady-state kinetics of nucleotide incorporation opposite O(6)-MeG by gp90 exo(-). O(6)-MeG partially inhibited full-length extension by gp90 exo(-). O(6)-MeG greatly reduces dNTP incorporation efficiency, resulting in 67-fold preferential error-prone incorporation of dTTP than dCTP...
June 10, 2017: DNA Repair
https://www.readbyqxmd.com/read/28651069/automatic-mpst-cut-for-segmentation-of-carpal-bones-from-mr-volumes
#9
Laura Gemme, Sonia Nardotto, Silvana G Dellepiane
In the context of rheumatic diseases, several studies suggest that Magnetic Resonance Imaging (MRI) allows the detection of the three main signs of Rheumatoid Arthritis (RA) at higher sensitivities than available through conventional radiology. The rapid, accurate segmentation of bones is an essential preliminary step for quantitative diagnosis, erosion evaluation, and multi-temporal data fusion. In the present paper, a new, semi-automatic, 3D graph-based segmentation method to extract carpal bone data is proposed...
June 12, 2017: Computers in Biology and Medicine
https://www.readbyqxmd.com/read/28651023/many-to-one-comparisons-after-safety-selection-in-multi-arm-clinical-trials
#10
Gerald Hlavin, Lisa V Hampson, Franz Koenig
In phase II platform trials, 'many-to-one' comparisons are performed when K experimental treatments are compared with a common control to identify the most promising treatment(s) to be selected for Phase III trials. However, when sample sizes are limited, such as when the disease of interest is rare, only a single Phase II/III trial addressing both treatment selection and confirmatory efficacy testing may be feasible. In this paper, we suggest a two-step safety selection and testing procedure for such seamless trials...
2017: PloS One
https://www.readbyqxmd.com/read/28650973/interferon-signaling-in-peromyscus-leucopus-confers-a-potent-and-specific-restriction-to-vector-borne-flaviviruses
#11
Adaeze O Izuogu, Kristin L McNally, Stephen E Harris, Brian H Youseff, John B Presloid, Christopher Burlak, Jason Munshi-South, Sonja M Best, R Travis Taylor
Tick-borne flaviviruses (TBFVs), including Powassan virus and tick-borne encephalitis virus cause encephalitis or hemorrhagic fevers in humans with case-fatality rates ranging from 1-30%. Despite severe disease in humans, TBFV infection of natural rodent hosts has little noticeable effect. Currently, the basis for resistance to disease is not known. We hypothesize that the coevolution of flaviviruses with their respective hosts has shaped the evolution of potent antiviral factors that suppress virus replication and protect the host from lethal infection...
2017: PloS One
https://www.readbyqxmd.com/read/28650873/perceptions-of-ambulatory-workflow-changes-in-an-academic-primary-care-setting
#12
Michael A Hanak, Colleen McDevitt, Daniel P Dunham
As health care moves to a value-based system, the need for team-based models of care becomes increasingly important to adequately address the growing number of clinical quality metrics required of health care providers. Finding ways to better engage certified medical assistants (CMAs) in the process allows providers to focus on more complex tasks while improving the efficiency of each office visit. Although the roles and responsibilities for CMAs across the specialties can vary widely, standardizing the work can be a helpful step in scaling best practices across an institution...
June 23, 2017: Health Care Manager
https://www.readbyqxmd.com/read/28650857/effects-of-transcranial-direct-current-stimulation-plus-physical-therapy-on-gait-in-patients-with-parkinson-disease-a-randomized-controlled-trial
#13
Pattarapol Yotnuengnit, Roongroj Bhidayasiri, Rattana Donkhan, Juthamas Chaluaysrimuang, Krisna Piravej
OBJECTIVE: The aim of the study was to study the combined effects of transcranial direct current stimulation (tDCS) and physical therapy on the walking ability of patients with Parkinson disease (PD). STUDY DESIGN: The study used an experimental, double-blinded, randomized controlled trial. RESULTS: After intervention, group 1 (only tDCS) demonstrated a significant increase in gait speed by 0.13 to 0.14 m/sec (17.8%-19.2%) and an increase in step length by 5...
June 24, 2017: American Journal of Physical Medicine & Rehabilitation
https://www.readbyqxmd.com/read/28650830/feature-selection-based-on-neighborhood-discrimination-index
#14
Changzhong Wang, Qinghua Hu, Xizhao Wang, Degang Chen, Yuhua Qian, Zhe Dong
Feature selection is viewed as an important preprocessing step for pattern recognition, machine learning, and data mining. Neighborhood is one of the most important concepts in classification learning and can be used to distinguish samples with different decisions. In this paper, a neighborhood discrimination index is proposed to characterize the distinguishing information of a neighborhood relation. It reflects the distinguishing ability of a feature subset. The proposed discrimination index is computed by considering the cardinality of a neighborhood relation rather than neighborhood similarity classes...
June 23, 2017: IEEE Transactions on Neural Networks and Learning Systems
https://www.readbyqxmd.com/read/28650684/intentional-ingestion-of-elemental-mercury-requiring-multi-step-decontamination-and-prophylactic-appendectomy-a-case-report-and-treatment-proposal
#15
Andrea Michielan, Azzurra Schicchi, Roberto Cappuccio, Davide Lonati, Francesca Lamboglia, Alessandra Vitalba, Alessandro Caroli, Marta Crevani, Carlo A Locatelli, Giorgio Betetto
BACKGROUND: Ingestion of elemental mercury (Hg0) is considered non-toxic. After massive ingestion, local intestinal complications may develop: retention within appendix is quite frequent but treatment is debated. We describe a case of intentional ingestion of Hg0 requiring multi-step decontamination and prophylactic appendectomy. Case detail: A 19-year-old woman was admitted to ED for abdominal pain. History revealed ingestion of large amount of Hg0 as suicide attempt. To prevent absorption, facilitate elimination, and avoid complications a conservative approach was started...
June 26, 2017: Clinical Toxicology
https://www.readbyqxmd.com/read/28650650/prodrugs-of-pyrazolo-3-4-d-pyrimidines-from-library-synthesis-to-evaluation-as-potential-anticancer-agents-in-an-orthotopic-glioblastoma-model
#16
Giulia Vignaroli, Giulia Iovenitti, Claudio Zamperini, Federica Coniglio, Pierpaolo Calandro, Alessio Molinari, Anna Lucia Fallacara, Andrea Sartucci, Alessia Calgani, David Colecchia, Andrea Mancini, Claudio Festuccia, Elena Dreassi, Massimo Valoti, Francesca Musumeci, Mario Chiariello, Adriano Angelucci, Maurizio Botta, Silvia Schenone
Pyrazolo[3,4-d]pyrimidines are potent protein kinase inhibitors with promising antitumor activity but suboptimal aqueous solubility, consequently worth to be further optimized. Herein, we present the one-pot two-step procedure for the synthesis of a set of pyrazolo[3,4-d]pyrimidine prodrugs (1a-9a,e) with higher aqueous solubility and enhanced pharmacokinetic and therapeutic properties. ADME studies demonstrated for the most promising prodrugs a better aqueous solubility, a favorable hydrolysis in human and murine serum and an increased ability to cross cell membranes with respect to the parental drugs, explaining their better 24h in vitro cytotoxicity against human glioblastoma U87 cell line...
June 26, 2017: Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28650649/decoration-of-chondroitin-polysaccharide-with-threonine-synthesis-conformational-study-and-ice-recrystallization-inhibition-activity
#17
Antonio Laezza, Angela Casillo, Sandro Cosconati, Caroline I Biggs, Antonio Fabozzi, Luigi Paduano, Alfonso Iadonisi, Ettore Novellino, Matthew I Gibson, Antonio Randazzo, Maria Michela Corsaro, Emiliano Bedini
Several threonine (Thr)- and/or alanine (Ala)-rich antifreeze glycoproteins (AFGPs) and polysaccharides act in nature as ice recrystallization inhibitors. Among them, the Thr-decorated capsular polysaccharide (CPS) from the cold-adapted Colwellia psychrerythraea 34H bacterium was recently investigated for its cryoprotectant activity. A semi-synthetic mimic thereof was here prepared from microbial sourced chondroitin through a four step strategy, involving a partial protection of the chondroitin polysaccharide as a key step for gaining an unprecedented quantitative amidation of its glucuronic acid units...
June 26, 2017: Biomacromolecules
https://www.readbyqxmd.com/read/28650630/waterborne-electrospinning-of-poly-n-isopropyl-acrylamide-by-control-of-environmental-parameters
#18
Ella Schoolaert, Paulien Ryckx, Jozefien Geltmeyer, Samarendra Maji, Paul H M Van Steenberge, Dagmar R D'hooge, Richard Hoogenboom, Karen De Clerck
With increasing toxicity and environmental concerns, electrospinning from water, i.e. waterborne electrospinning, is crucial to further exploit the resulting nanofiber potential. Most water-soluble polymers have the inherent limitation of resulting in water-soluble nanofibers and a tedious chemical cross-linking step is required to reach stable nanofibers. An interesting alternative route is the use of thermoresponsive polymers, such as poly(N-isopropyl acrylamide) (PNIPAM), as they are water-soluble beneath their lower critical solution temperature (LCST) allowing low temperature electrospinning while the obtained nanofibers are water-stable above the LCST...
June 26, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28650621/novel-cdta-based-bifunctional-chelators-for-stable-and-inert-mn-ii-complexation-synthesis-and-physicochemical-characterization
#19
Christian Vanasschen, Enikő Molnár, Gyula Tircsó, Ferenc K Kálmán, Éva Tóth, Marie Brandt, Heinz H Coenen, Bernd Neumaier
In the search for Mn(II) MR and PET/MR imaging agents with optimal balance between thermodynamic stability, kinetic inertness, and relaxivity, two novel bifunctional Mn(II) chelators (BFMnCs) based on CDTA (trans-1,2-diaminocyclohexane-N,N,N',N'-tetraacetic acid) were synthesized. A six-step synthesis, involving the buildup of a functionalized trans-1,2-diaminocyclohexane core, provided CuAAC-reactive 6a and 6b bearing an alkyne or azide substituent on the cyclohexane ring, respectively (CuAAC = Cu(I)-catalyzed azide-alkyne 1,3-dipolar cycloaddition)...
June 26, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28650617/kinetics-and-mechanism-of-the-autocatalytic-oxidation-of-bis-terpyridine-iron-ii-by-peroxomonosulfate-ion-oxone-in-acidic-medium
#20
Gábor Bellér, Gábor Lente, István Fábián
The autocatalytic oxidation of the bis(terpyridine)iron(II) complex, Fe(tpy)2(2+) by peroxomonosulfate ion (PMS) proceeds via the formation of the corresponding iron(III) complex (Fe(tpy)2(3+)) as the primary oxidation product. The proton-assisted dissociation of Fe(tpy)2(2+) and subsequent oxidation of Fe(2+) are side reactions in this system. In the initial stage of the reaction, a 1:1 adduct is formed between PMS and bis(terpyridine)iron(II), which decomposes in an intramolecular electron transfer reaction step...
June 26, 2017: Inorganic Chemistry
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