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https://www.readbyqxmd.com/read/28648003/-curative-effect-analysis-of-15-cases-of-cervical-intra-and-extra-spinal-tumors-by-microsurgical-resection
#1
Y Han, X L Zheng, L Li, Z Q Jiang, F Y Lou, S J Zhang
Objective: To explore the curative effect of microsurgical treatment of cervical intra- and extra-spinal tumors. Methods: The clinical data of 15 patients with cervical intra-and extra-spinal tumors in Department of Neurosurgery, the First Affiliated Hospital of Bengbu Medical College from January 2013 to February 2017 were retrospectively analyzed. According to Shaw's tumor stage: 6 cases in stage Ⅰ, 5 cases in stage Ⅱ, 3 cases in stage Ⅲ, and 1 case in stage Ⅳ. About the surgical methods: 9 cases were treated via posterior median semi-laminectomy approach, of which were internal fixation in 2 cases, and via posterior median approach spinous process and vertebral plate complex orthotopic replantation to spinal canal plasty in 3 cases, other 3 cases were operated via anterior cervical approach, including internal fixation in 1 case...
June 20, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/28647965/-paying-attention-to-different-health-needs-of-different-ethnic-groups-in-process-health-for-all-program
#2
T G Li, M Wang
In recent years, great effort has been made in the promotion of health for all in China. Articles on column on chronic and non-communicable disease risk factors in Uighur population, analysis based on the investigation results of Uygur population health status in the Kashi area of Xinjiang of China and similar domestic and foreign studies showed that the health data in different countries are different. The differences in health related data exist in different ethnic groups even in same country or same ethnic group in different areas...
June 10, 2017: Zhonghua Liu Xing Bing Xue za Zhi, Zhonghua Liuxingbingxue Zazhi
https://www.readbyqxmd.com/read/28647909/organic-matter-export-to-the-seafloor-in-the-baltic-sea-drivers-of-change-and-future-projections
#3
Tobias Tamelander, Kristian Spilling, Monica Winder
The impact of environmental change and anthropogenic stressors on coastal marine systems will strongly depend on changes in the magnitude and composition of organic matter exported from the water column to the seafloor. Knowledge of vertical export in the Baltic Sea is synthesised to illustrate how organic matter deposition will respond to climate warming, climate-related changes in freshwater runoff, and ocean acidification. Pelagic heterotrophic processes are suggested to become more important in a future warmer climate, with negative feedbacks to organic matter deposition to the seafloor...
June 24, 2017: Ambio
https://www.readbyqxmd.com/read/28647263/a-zero-valent-iron-and-organic-matter-mixture-enhances-herbicide-and-herbicide-degradation-product-removal-in-subsurface-waters
#4
Kaisa Kerminen, Ville Salovaara, Merja Hannele Kontro
The pesticide atrazine, its degradation products, and 2,6-dichlorobenzamide (BAM) are persistent in groundwater environment. We studied whether their dissipation can be enhanced with a mixture of a complex carbon source and zero-valent iron (ZVI) called EHC®. The application rates were 1.0% and 2.0% (by weight) in subsurface sediments slurries (atrazine 30mg/L), and 2.0% in 1.5m pilot-scale sediment columns with groundwater flowing through (atrazine 0.08, desethylatrazine DEA 0.03, BAM 0.02μg/L). In the slurries under aerobic conditions, atrazine of 0...
July 2017: Journal of Environmental Sciences (China)
https://www.readbyqxmd.com/read/28647246/environmentally-relevant-concentrations-of-aminopolycarboxylate-chelating-agents-mobilize-cd-from-humic-acid
#5
Ashley E North, Sophia Sarpong-Kumankomah, Andrew R Bellavie, Wade M White, Jürgen Gailer
Although Cd is a pollutant of public health relevance, many dietary sources from which it can be absorbed into human tissues remain unknown. While it is well established that the biogeochemical cycle of Cd involves its complexation with environment-derived ligands (e.g., humic acids, HAs) and anthropogenic ones (e.g., chelating agents, CAs), the interaction of Cd with both of these ligands is less well understood. To gain insight, a HA-Cd complex was injected on a size-exclusion chromatography (SEC) column coupled on-line with a flame atomic absorption spectrometer (FAAS) using 10mmol/L Tris buffer (pH8...
July 2017: Journal of Environmental Sciences (China)
https://www.readbyqxmd.com/read/28647231/simultaneous-elimination-of-cyanotoxins-and-pcbs-via-mechanical-collection-of-cyanobacterial-blooms-an-application-of-green-bioadsorption-concept
#6
Wei Chen, Yunlu Jia, Anyue Liu, Qichao Zhou, Lirong Song
In this study, the distribution, transfer and fate of both polychlorinated biphenyls (PCBs) and cyanotoxins via phytoplankton routes were systematically investigated in two Chinese lakes. Results indicated that PCB adsorption/bioaccumulation dynamics has significantly positive correlations with the biomass of green alga and diatoms. Total lipid content of phytoplankton is the major factor that influences PCB adsorption/bioaccumulation. Cyanobacterial blooms with relatively lower lipid content could also absorb high amount of PCBs due to their high cell density in the water columns, and this process was proposed as major route for the transfer of PCBs in Chinese eutrophic freshwater...
July 2017: Journal of Environmental Sciences (China)
https://www.readbyqxmd.com/read/28647148/monolithic-capillary-column-with-an-integrated-electrochemical-detector
#7
Martina Komendová, Radovan Metelka, Jiří Urban
The carbon fiber and silver microwire were used as working and pseudoreference electrode, respectively, and inserted into the ending of capillary to prepare monolithic capillary column with an integrated electrochemical detector. Prepared capillary devices offered stable and robust results with relative standard deviations of retention, resolution, and detection signal lower than 1.5, 5.5, and 5.0%, respectively. To further increase sensitivity of developed electrochemical microdetector, multiple pulse amperometry detection mode has been used...
June 19, 2017: Journal of Chromatography. A
https://www.readbyqxmd.com/read/28647146/analysis-of-oxidised-heavy-paraffininc-products-by-high-temperature-comprehensive-two-dimensional-gas-chromatography
#8
H Potgieter, R Bekker, J Beigley, E Rohwer
Heavy petroleum fractions are produced during crude and synthetic crude oil refining processes and they need to be upgraded to useable products to increase their market value. Usually these fractions are upgraded to fuel products by hydrocracking, hydroisomerization and hydrogenation processes. These fractions are also upgraded to other high value commercial products like lubricant oils and waxes by distillation, hydrogenation, and oxidation and/or blending. Oxidation of hydrogenated heavy paraffinic fractions produces high value products that contain a variety of oxygenates and the characterization of these heavy oxygenates is very important for the control of oxidation processes...
June 16, 2017: Journal of Chromatography. A
https://www.readbyqxmd.com/read/28647145/a-new-peak-shape-analysis-approach-detection-and-quantitation-of-concurrent-fronting-tailing-and-their-effect-on-asymmetry-measurements
#9
M Farooq Wahab, Darshan C Patel, Daniel W Armstrong
Most peak shapes obtained in separation science depart from linearity for various reasons such as thermodynamic, kinetic, or flow based effects. An indication of the nature of asymmetry often helps in problem solving e.g. in column overloading, slurry packing, buffer mismatch, and extra-column band broadening. However, existing tests for symmetry/asymmetry only indicate the skewness in excess (tail or front) and not the presence of both. Two simple graphical approaches are presented to analyze peak shapes typically observed in gas, liquid, and supercritical fluid chromatography as well as capillary electrophoresis...
June 13, 2017: Journal of Chromatography. A
https://www.readbyqxmd.com/read/28646803/effects-of-balneotherapy-on-serum-levels-of-shingosine-1-phosphate-in-patients-with-osteoarthritis
#10
Esra Aycan Ustyol, Fatih Karaarslan, Seldag Bekpinar, Kagan Ozkuk, Nergis Erdogan
Context • Balneotherapy is one of the most commonly used nonpharmacological interventions for osteoarthritis (OA), but its mechanism of action in relieving pain and stiffness and in improving physical function is not well understood. Studies have found that therapy provokes a series of neuroendocrinal reactions with anti-inflammatory and analgesic effects. Sphingosine-1-phosphate (S1P), a bioactive lipid, has been implicated as an important mediator in the maintenance of physiological processes (eg, vascular barrier integrity) and in pathophysiologic processes such as inflammatory conditions...
June 23, 2017: Alternative Therapies in Health and Medicine
https://www.readbyqxmd.com/read/28646796/organic-matter-drives-high-interannual-variability-in-methylmercury-concentrations-in-a-subarctic-coastal-sea
#11
A L Soerensen, A T Schartup, A Skrobonja, E Björn
Levels of neurotoxic methylmercury (MeHg) in phytoplankton are strongly associated with water MeHg concentrations. Because uptake by phytoplankton is the first and largest step of bioaccumulation in aquatic food webs many studies have investigated factors driving seasonal changes in water MeHg concentrations. Organic matter (OM) is widely accepted as an important driver of MeHg production and uptake by phytoplankton but is also known for strong interannual variability in concentration and composition within systems...
June 21, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28646749/mutually-facilitated-co-transport-of-two-different-viruses-through-reactive-porous-media
#12
Shuang Xu, Ramesh Attinti, Elizabeth Adams, Jie Wei, Kalmia Kniel, Jie Zhuang, Yan Jin
In this study, we quantified transport and retention behaviors of a human pathogenic virus (Adenovirus 41, abbreviated as Ad-41) and a model bacteriophage (ϕX174) through metal oxide-removed and goethite-coated sand under saturated flow conditions. Two sets of bench scale column experiments were conducted: transport of each type of viruses alone and co-transport of both viruses. All experiments were conducted at pH 7.5 using 2 mM artificial ground water (AGW) buffer as background solution. Experimental results revealed that goethite-coated sand (i...
June 18, 2017: Water Research
https://www.readbyqxmd.com/read/28646690/polycyclic-aromatic-hydrocarbons-in-the-water-spm-sediment-system-from-the-middle-reaches-of-huai-river-china-distribution-partitioning-origin-tracing-and-ecological-risk-assessment
#13
Jiamei Zhang, Guijian Liu, Rujing Wang, He Huang
The polycyclic aromatic hydrocarbons (PAHs) concentrations in the water, suspended particulate matter (SPM) and sediment from the middle reaches of Huai River were analyzed by a gas chromatograph-mass spectrometer (GC-MS). The mean concentrations for the sum of 16 PAHs (∑16 PAHs) in the water, SPM and sediment were 1204 ng/L, 3192 ng/g (dry weight; dw), and 7955 ng/g (dw), respectively. Along the vertical profiles of water columns, higher ∑16 PAHs levels were seen in surface and bottom water layers and co-located SPM...
June 21, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28646438/noctiluca-and-copepods-grazing-on-the-phytoplankton-community-in-a-nutrient-enriched-coastal-environment-along-the-southwest-coast-of-india
#14
N Arunpandi, R Jyothibabu, L Jagadeesan, T R Gireeshkumar, C Karnan, S W A Naqvi
The relative grazing impact of Noctiluca scintillans (hereafter referred only Noctiluca) and copepods (Acrocalanus gracilis, Paracalanus parvus, Acartia danae and Oithona similis) on the phytoplankton community in an upwelling-mudbank environment along the southwest coast India is presented here. This study was carried out during the Pre-Southwest Monsoon (April-May) to the Late Southwest Monsoon (August) period in 2014. During the sampling period, large hydrographical transformation was evident in the study area (off Alappuzha, Southwest coast of India); warmer Pre-Southwest Monsoon water column condition got transformed into cooler and nitrate-rich hypoxic waters during the Southwest Monsoon (June-August) due to intense coastal upwelling...
July 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28646311/removal-of-arsenic-iii-v-by-a-granular-mn-oxide-doped-al-oxide-adsorbent-surface-characterization-and-performance
#15
Kun Wu, Jin Zhang, Bing Chang, Ting Liu, Furong Zhang, Pengkang Jin, Wendong Wang, Xiaochang Wang
In order to remove arsenic (As) from contaminated water, granular Mn-oxide-doped Al oxide (GMAO) was fabricated using the compression method with the addition of organic binder. The analysis results of XRD, SEM, and BET indicated that GMAO was microporous with a large specific surface area of 54.26 m(2/)g, and it was formed through the aggregation of massive Al/Mn oxide nanoparticles with an amorphous pattern. EDX, mapping, FTIR, and XPS results showed the uniform distribution of Al/Mn elements and numerous hydroxyl groups on the adsorbent surface...
June 23, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28645850/biomechanical-analysis-using-fea-and-experiments-of-a-standard-plate-method-versus-three-cable-methods-for-fixing-acetabular-fractures-with-simultaneous-tha
#16
Mina S R Aziz, Omar Dessouki, Saeid Samiezadeh, Habiba Bougherara, Emil H Schemitsch, Radovan Zdero
Acetabular fractures potentially account for up to half of all pelvic fractures, while pelvic fractures potentially account for over one-tenth of all human bone fractures. This is the first biomechanical study to assess acetabular fracture fixation using plates versus cables in the presence of a total hip arthroplasty, as done for the elderly. In Phase 1, finite element (FE) models compared a standard plate method versus 3 cable methods for repairing an acetabular fracture (type: anterior column plus posterior hemi-transverse) subjected to a physiological-type compressive load of 2207N representing 3 x body weight for a 75kg person during walking...
June 20, 2017: Medical Engineering & Physics
https://www.readbyqxmd.com/read/28645595/transforaminal-endoscopic-decompression-for-a-displaced-endplate-fracture-after-lateral-lumbar-interbody-fusion-technical-note
#17
Ralf Wagner, Albert E Telfeian, Guntram Krzok, Menno Iprenburg
Lateral lumbar interbody fusion (LLIF) is a minimally-invasive approach to anterior spinal column fusion, deformity correction and indirect decompression of the lumbar spine. A rarely reported possible complication of the procedure is endplate fracture which has the potential for nerve root compression. Here we present a case of endplate fracture and nerve compression after stand-alone LLIF, its diagnosis, and its subsequent successful treatment with transforaminal endoscopic spine surgery. The case highlights the possible role for minimally invasive endoscopic surgery as a rescue procedure after fusion complication...
June 20, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28645142/polyphyly-of-arundinoideae-poaceae-and-evolution-of-the-twisted-geniculate-lemma-awn
#18
J K Teisher, M R McKain, B A Schaal, E A Kellogg
Background and Aims: Subfamily Arundinoideae represents one of the last unsolved taxonomic mysteries in the grass family (Poaceae) due to the narrow and remote distributions of many of its 19 morphologically and ecologically heterogeneous genera. Resolving the phylogenetic relationships of these genera could have substantial implications for understanding character evolution in the grasses, for example the twisted geniculate awn - a hygroscopic awn that has been shown to be important in seed germination for some grass species...
June 21, 2017: Annals of Botany
https://www.readbyqxmd.com/read/28645021/development-a-validated-highly-sensitive-lc-ms-ms-method-for-simultaneous-quantification-of-ledipasvir-sofosbuvir-and-its-major-metabolite-gs-331007-in-human-plasma-application-to-a-human-pharmacokinetic-study
#19
Ola M Abdallah, Ahmed M Abdel-Megied, Amira S Gouda
A highly sensitive and rapid LC-MS/MS method was developed, fully optimized and validated for the simultaneous determination of Ledipasvir (LED) and Sofosbuvir (SOF) in the presence of its major metabolite GS-331007 in human plasma using Daclatasvir as internal standard (IS). The extraction of analytes and IS from plasma was performed using liquid-liquid extraction with ethyl acetate. The chromatographic separation of these prepared samples was achieved on Xterra MS C8 column (4.6×50mm,5μm) using gradient elution with a mobile phase of ammonium formate buffer (pH 3...
June 20, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/28644752/expression-and-purification-of-swine-rag2-in-e-coli-for-production-of-porcine-rag2-polyclonal-antibodies
#20
Yu-Bei Jin, Wen-Tao Yang, Ke-Yan Huang, Hong-Liang Chen, Seria-Masole Shonyela, Jing Liu, Qiong Liu, Bo Feng, You Zhou, Shu-Li Zhi, Yan-Long Jiang, Jian-Zhong Wang, Hai-Bin Huang, Chun-Wei Shi, Gui-Lian Yang, Chun-Feng Wang
Recombination activating gene 2 (RAG2) is necessary for immature B cell differentiation. Antibodies to human and rabbit RAG2 are currently commercially available, but antibodies to swine RAG remain unavailable to date. In this study, the swine RAG2 genes sequence was synthesized and then cloned into a pET-28a vector. The recombinant fusion protein was successfully expressed in E. coli, purified through nickel column chromatography, and further digested with Tobacco Etch Virus protease. The cleaved protein was purified by molecular-exclusion chromatography and named pRAG2...
June 23, 2017: Bioscience, Biotechnology, and Biochemistry
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