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https://www.readbyqxmd.com/read/28110242/three-dimensional-analysis-of-tarsal-bone-response-to-axial-loading-in-patients-with-hallux-valgus-and-normal-feet
#1
Kota Watanabe, Yasutoshi Ikeda, Daisuke Suzuki, Atsushi Teramoto, Takuma Kobayashi, Tomoyuki Suzuki, Toshihiko Yamashita
BACKGROUND: Patients with hallux valgus present a variety of symptoms that may be related to the type of deformity. Weightbearing affects the deformities, and the evaluation of the load response of tarsal bones has been mainly performed using two-dimensional plane radiography. The purpose of this study was to investigate and compare structural changes in the medial foot arch between patients with hallux valgus and normal controls using a computer image analysis technique and weightbearing computed tomography data...
January 17, 2017: Clinical Biomechanics
https://www.readbyqxmd.com/read/28110130/enhanced-enzymatic-hydrolysis-of-sugarcane-bagasse-with-ferric-chloride-pretreatment-and-surfactant
#2
Hongdan Zhang, Guangying Ye, Yutuo Wei, Xin Li, Aiping Zhang, Jun Xie
A FeCl3 pretreatment methodology was developed to convert raw sugarcane bagasse to highly digestible pretreated solid and selectively extract up to ∼100% of the hemicellulose from lignocellulosic biomass. FeCl3 pretreated solids yielded a quite high fermentable sugar yield compared to the native material. In addition, characterization of raw material and pretreated solid by X-ray diffraction (XRD), scanning electron microscopy (SEM), and thermogravimetric (TG) analysis was carried out to better understand how hemicellulose removal affected subsequent enzymatic hydrolysis...
January 12, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28110033/purification-characterization-and-functional-analysis-of-the-immune-molecule-lectin-from-the-haemolymph-of-blue-swimmer-crab-portunus-pelagicus-and-their-antibiofilm-properties
#3
Sangily Jayanthi, Ramachandran Ishwarya, Mahalingam Anjugam, Arokiadhas Iswarya, Sivashanmugam Karthikeyan, Baskaralingam Vaseeharan
The present study reveals purification and characterization of immune molecule lectin from the haemolymph of blue swimmer crab Portunus pelagicus (Pp-Lec). The Pp-Lec was purified by affinity chromatography with mannose coupled sepharose CL-4B column and it exhibits single band with a molecular weight of 155 kDa in SDS-PAGE. The surface morphology of purified Pp-Lec displays the homogeneous nature of protein. A distinct peak with a retention time of 3.3 min was appeared in high performance liquid chromatography (HPLC) and X-ray diffraction (XRD) analysis expresses a single peak at 31...
January 18, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28110023/determination-of-concentrations-of-fe-mg-and-zn-in-some-ferrite-samples-using-neutron-activation-analysis-and-x-ray-fluorescence-techniques
#4
I A Ali, Gehan Y Mohamed, A Azzam, A A Sattar
Mg-Zn ferrite is considered as one of the important materials with potential uses in many applications. In this work, samples of ferrite Mg(1-x)ZnxFe2O4 (where x=0.0, 0.2, 0.4, 0.6, 0.8 and 1) were synthesized by the sol-gel method for use in some hyperthermia applications. The composition and purity of the prepared samples hardly affected their properties. Therefore, the elemental concentration of these samples was measured by the X-ray fluorescence technique and thermal neutron activation analysis to check the quality of the prepared samples...
January 14, 2017: Applied Radiation and Isotopes
https://www.readbyqxmd.com/read/28110022/multielemental-analysis-of-some-soils-in-karaman-by-paa-using-a-clinac
#5
Osman Agar, Ismail Boztosun, Christian Segebade
In this analytical work, some components (Sr, Ni, Mg, Fe, Zr, Cd, As, Ca, Br, Rb, Mn, I, Zn, Pb, Tl, U and Ba) of soil samples collected in different locations in the surroundings of Karaman, Turkey were determined by photon activation analysis (PAA). This method is based on photonuclear reactions. (γ,n), (γ,2n), (γ,γ') and (γ,p)-type reactions have been observed. The samples were irradiated with bremsstrahlung photons produced by a clinical electron linear accelerator (cLINAC) for up to about 85min. The PAA results were compared with those obtained by X-ray fluorescence (XRF)...
January 15, 2017: Applied Radiation and Isotopes
https://www.readbyqxmd.com/read/28109793/a-study-of-fasoracetam-s-solid-state-forms-a-potential-anti-alzheimer-pharmaceutical
#6
Bram Harmsen, Koen Robeyns, Johan Wouters, Tom Leyssens
Different solid state forms of the research chemical fasoracetam, which counters the effects of Alzheimer's disease, have been subjected to a thermal and structural analysis. Single crystals were obtained from solution evaporation and from the melt. Single crystal x-ray analyses of the crystals show the existence of two hydrated and one non-hydrated crystalline form of fasoracetam. Under ambient conditions, the hydrate form I is found to be the most stable form, showing a melting point of 57°C. This low melting point, combined with possible water losses could cause problems when formulating the hydrated form and impact the storage conditions of the compound...
January 18, 2017: Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28109773/exploring-polyvinylpyrrolidone-in-the-engineering-of-large-porous-plga-microparticles-via-single-emulsion-method-with-tunable-sustained-release-in-the-lung-in-vitro-and-in-vivo-characterization
#7
Rui Ni, Uwe Muenster, Jing Zhao, Lan Zhang, Eva-Maria Becker-Pelster, Martin Rosenbruch, Shirui Mao
Sustained pulmonary drug delivery is regarded as an effective strategy for local treatment of chronic lung diseases. Despite of the progress made so far, there remains a need for respirable drug loaded porous microparticles, where porosity of the microparticles can be readily engineered during the preparation process, with tunable sustained drug release upon lung deposition. In this work, polyvinyl pyrrolidone (PVP) was used as a novel porogen to engineer PLGA-based large porous particles (LPPs) using single emulsion method, with fine tuning of the porosity, sustained drug release both in vitro and in vivo...
January 18, 2017: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/28108974/design-and-evaluation-of-topical-diclofenac-sodium-gel-using-hot-melt-extrusion-technology-as-a-continuous-manufacturing-process-with-kolliphor%C3%A2-p407
#8
Jaywant Pawar, Rajkiran Narkhede, Purnima Amin, Vaishali Tawde
The aim of the present context was to develop and evaluate a Kolliphor® P407-based transdermal gel formulation of diclofenac sodium by hot melt extrusion (HME) technology; central composite design was used to optimize the formulation process. In this study, we have explored first time ever HME as an industrially feasible and continuous manufacturing technology for the manufacturing of gel formulation using Kolliphor® P407 and Kollisolv® PEG400 as a gel base. Diclofenac sodium was used as a model drug. The HME parameters such as feeding rate, screw speed, and barrel temperature were crucial for the semisolid product development, and were optimized after preliminary trials...
January 20, 2017: AAPS PharmSciTech
https://www.readbyqxmd.com/read/28108817/computerized-classification-of-pneumoconiosis-on-digital-chest-radiography-artificial-neural-network-with-three-stages
#9
Eiichiro Okumura, Ikuo Kawashita, Takayuki Ishida
It is difficult for radiologists to classify pneumoconiosis from category 0 to category 3 on chest radiographs. Therefore, we have developed a computer-aided diagnosis (CAD) system based on a three-stage artificial neural network (ANN) method for classification based on four texture features. The image database consists of 36 chest radiographs classified as category 0 to category 3. Regions of interest (ROIs) with a matrix size of 32 × 32 were selected from chest radiographs. We obtained a gray-level histogram, histogram of gray-level difference, gray-level run-length matrix (GLRLM) feature image, and gray-level co-occurrence matrix (GLCOM) feature image in each ROI...
January 20, 2017: Journal of Digital Imaging: the Official Journal of the Society for Computer Applications in Radiology
https://www.readbyqxmd.com/read/28108409/sol-gel-synthesis-and-characterizations-of-hybrid-chitosan-peg-calcium-silicate-nanocomposite-modified-with-zno-nps-and-e102-for-optical-and-antibacterial-applications
#10
Ahmed M Youssef, Amany M El-Nahrawy, Ali B Abou Hammad
Hybrid Chitosan/Poly ethylene glycol/calcium silicate (CS/PEG/calcium silicate) nanocomposite modified with different two types, zinc oxide nanoparticles (ZnO-NPs) and tartrazine dye (E102) were prepared by sol gel method and the characterization of their structure and biological properties were carried out in order to evaluate the possible use in optical and biomedical fields. The hybrid CS/PEG/calcium silicate complex formations have been established by X-ray diffraction (XRD) and Fourier transform infrared (FTIR) spectroscopic analysis...
January 17, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28108408/effect-of-drying-conditions-on-crystallinity-of-amylose-nanoparticles-prepared-by-nanoprecipitation
#11
Xiaoxia Yan, Yanjiao Chang, Qian Wang, Youjia Fu, Jiang Zhou
In this study, amylose nanoparticles prepared by nanoprecipitation were dried at different conditions. The crystalline structure, crystallinity, re-dispersibility and morphological characteristic of the amylose nanoparticles after drying were investigated. X-ray diffraction analysis revealed that the V-type crystalline structure of the amylose nanoparticles formed in the drying process instead of the precipitation process, and drying condition significantly affects the crystallinity. The temperature cycles drying at 4°C and 40°C considerably increased crystallinity of the amylose nanoparticles, 24h (4/40°C, 12h/12h) drying under 11% relative humidity could give rise to a crystallinity up to 50...
January 17, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28108362/an-in-vitro-study-on-the-burn-wound-healing-activity-of-cotton-fabrics-incorporated-with-phytosynthesized-silver-nanoparticles-in-male-wistar-albino-rats
#12
Pannerselvam Balashanmugam, Dharmalingam Jothinathan Mukesh Kumar, Rajenderan Murugan, Perumal Palani, Pudupalayam Thangavelu Kalaichelvan, Hyung Joo Kim, Vijay Singh, Rangarajulu Senthil Kumaran
In modern therapeutics, chemically synthesized drugs have been reported as causing adverse effects including allergies, rashes, itches, and swelling. For the past few decades, silver nanoparticles (AgNPs) have widely been applied in medical domains due to their antimicrobial and wound healing properties. In the present study, different concentrations of phytosynthesized AgNPs-saturated cotton dress fabrics - in comparison to cotton fabrics treated with commercial ointment - were tested for 18days to assess their ability to speed the healing of rats' burn wounds...
January 17, 2017: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28108044/relationship-of-muscle-mass-determined-by-dexa-with-spirometric-results-in-healthy-individuals
#13
Rafael Martín Holguera, Ana Isabel Turrión Nieves, Rosa Rodríguez Torres, María Concepción Alonso
INTRODUCTION: Muscle mass maybe a determining factor in the variability of spirometry results in individuals of the same sex and age who have similar anthropometric characteristics. The aim of this study was to determine the association between spirometric results from healthy individuals and their muscle mass assessed by dual energy X-ray absorptiometry (DEXA). METHODS: A sample of 161 women and 144 men, all healthy non-smokers, was studied. Ages ranged from18 to77years...
January 17, 2017: Archivos de Bronconeumología
https://www.readbyqxmd.com/read/28107971/screening-of-enzyme-inhibitors-from-traditional-chinese-medicine-by-magnetic-immobilized-%C3%AE-glucosidase-coupled-with-capillary-electrophoresis
#14
Dong-Mei Liu, Juan Chen, Yan-Ping Shi
As the close correlation between α-glucosidase inhibitors and the treatment of diabetes, in combination with capillary electrophoresis (CE), a method was developed to screen α-glucosidase inhibitors from traditional Chinese medicines (TCMs) by immobilizing α-glucosidase on magnetic nanoparticles. Such a magnetic immobilization would be beneficial for enzyme reusability, stability and separation. In this work, Fe3O4 nanoparticles were synthesized by solvothermal method. And the prepared nanoparticles were characterized by transmission electron microscopy (TEM), Fourier transform infrared (FT-IR) spectroscopy, X-ray diffraction (XRD), size and zeta potential analysis...
March 1, 2017: Talanta
https://www.readbyqxmd.com/read/28107937/calibration-free-quantitative-analysis-of-elemental-ratios-in-intermetallic-nanoalloys-and-nanocomposites-using-laser-induced-breakdown-spectroscopy-libs
#15
Seyyed Ali Davari, Sheng Hu, Dibyendu Mukherjee
Intermetallic nanoalloys (NAs) and nanocomposites (NCs) have increasingly gained prominence as efficient catalytic materials in electrochemical energy conversion and storage systems. But their morphology and chemical compositions play critical role in tuning their catalytic activities, and precious metal contents. While advanced microscopy techniques facilitate morphological characterizations, traditional chemical characterizations are either qualitative or extremely involved. In this study, we apply Laser Induced Breakdown Spectroscopy (LIBS) for quantitative compositional analysis of NAs and NCs synthesized with varied elemental ratios by our in-house built pulsed laser ablation technique...
March 1, 2017: Talanta
https://www.readbyqxmd.com/read/28107918/bismuth-nanoparticles-carbon-nanotubes-modified-sensor-for-sulfasalazine-analysis
#16
Biljana Nigović, Sandra Jurić, Iva Mitrović
Nanocomposite of bismuth nanoparticles and carbon nanotubes in Nafion matrix was used as modifier for glassy carbon electrode in analysis of anti-inflamatory drug sulfasalazine. The nanocomposite surface exhibited exceptional synergy and remarkable enhancement effect to the voltammetric response of drug. The surface morphology and structure characterization of the modified electrodes was characterized by scanning electron microscopy, energy dispersive X-ray spectroscopy and cyclic voltammetry. The sensor exhibited excellent electroanalytical performance for drug determination in comparison with bismuth film electrode...
March 1, 2017: Talanta
https://www.readbyqxmd.com/read/28107914/development-of-amino-functionalized-carbon-coated-magnetic-nanoparticles-and-their-application-to-electrochemical-detection-of-hybridization-of-nucleic-acids
#17
Cansu Altay, R Hilal Senay, Ece Eksin, Gulsah Congur, Arzum Erdem, Sinan Akgol
In our study, the development of amino functionalized carbon coated magnetic nanoparticles (NH2-CC-MNPs) and their usage for electrochemical detection of hybridization of nucleic acids have been aimed. Firstly, NH2-CC-MNPs were prepared by coating of pristine Fe3O4 nanoparticles with two layers via caramelization and silanization processes respectively. After the morphological characterization with scanning electron microscopy (SEM) it was seen that NH2-CC-MNPs was spherical shaped and in 28nm sized. Investigation of chemical composition with the help of scanning electron microscopy/energy dispersive X-ray spectroscopy (SEM/EDX) and fourier transform infrared spectroscopy (FTIR) was showed incorporation of carbon and APTES to the structure of NH2-CC-MNPs...
March 1, 2017: Talanta
https://www.readbyqxmd.com/read/28107736/crystal-structures-binding-interactions-and-adme-evaluation-of-brain-penetrant-n-substituted-indazole-5-carboxamides-as-subnanomolar-selective-monoamine-oxidase-b-and-dual-mao-a-b-inhibitors
#18
Nikolay T Tzvetkov, Hans-Georg Stammler, Beate Neumann, Silvia Hristova, Liudmil Antonov, Marcus Gastreich
The pharmacological and physicochemical analysis of structurally optimized N-alkyl-substituted indazole-5-carboxamides, developed as potential drug and radioligand candidates for the treatment and diagnosis of Parkinson's disease (PD) and other neurological disorders, is reported. Recent efforts have been focused on the development of subnanomolar potent, selective MAO-B (N1-alkyl-substituted compounds 12a-14a and 15) and dual active MAO-A/B (N2-methylated compounds 12b-14b) inhibitors with nanomolar potency towards MAO-B and moderately active against MAO-A enzyme, respectively...
January 11, 2017: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28107711/the-influence-of-dissolved-si-on-ni-precipitate-formation-at-the-kaolinite-water-interface-kinetics-drs-and-exafs-analysis
#19
Xiaoli Tan, Ge Liu, Huiyang Mei, Ming Fang, Xuemei Ren, Changlun Chen
Unraveling the formation process of Ni precipitates at molecular scale is important for understanding the fate and mobility of Ni species in the real environment. Dissolved Si presents in the natural environment ubiquitously, which can alter Ni sorption as well as incorporation into neoformed precipitates. Batch experiments show that the dissolved Si leads to a rapid increase in the Ni sorption rate and interferes with the formation of Ni precipitates. The results of diffuse reflectance spectroscopy (DRS) and extended X-ray absorption fine structure (EXAFS) spectroscopy analyses suggest that the nucleation of a (Ni,Al) phyllosilicate phase involves a kaolinite-like local structure...
January 16, 2017: Chemosphere
https://www.readbyqxmd.com/read/28107348/predicting-length-of-stay-among-patients-discharged-from-the-emergency-department-using-an-accelerated-failure-time-model
#20
Chung-Hsien Chaou, Hsiu-Hsi Chen, Shu-Hui Chang, Petrus Tang, Shin-Liang Pan, Amy Ming-Fang Yen, Te-Fa Chiu
BACKGROUND: Emergency department (ED) crowding continues to be an important health care issue in modern countries. Among the many crucial quality indicators for monitoring the throughput process, a patient's length of stay (LOS) is considered the most important one since it is both the cause and the result of ED crowding. The aim of this study is to identify and quantify the influence of different patient-related or diagnostic activities-related factors on the ED LOS of discharged patients...
2017: PloS One
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