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https://www.readbyqxmd.com/read/28797942/high-calcium-fly-ash-geopolymer-stabilized-lateritic-soil-and-granulated-blast-furnace-slag-blends-as-a-pavement-base-material
#1
Itthikorn Phummiphan, Suksun Horpibulsuk, Runglawan Rachan, Arul Arulrajah, Shui-Long Shen, Prinya Chindaprasirt
Granulated Blast Furnace Slag (GBFS) was used as a replacement material in marginal lateritic soil (LS) while class C Fly Ash (FA) was used as a precursor for the geopolymerization process to develop a low-carbon pavement base material at ambient temperature. Unconfined Compression Strength (UCS) tests were performed to investigate the strength development of geopolymer stabilized LS/GBFS blends. Scanning Electron Microscopy and X-ray Diffraction analysis were undertaken to examine the role of the various influencing factors on UCS development...
July 31, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28773021/nanoscaled-mechanical-properties-of-cement-composites-reinforced-with-carbon-nanofibers
#2
Salim Barbhuiya, PengLoy Chow
This paper reports the effects of carbon nanofibers (CNFs) on nanoscaled mechanical properties of cement composites. CNFs were added to cement composites at the filler loading of 0.2 wt % (by wt. of cement). Micrographs based on scanning electron microscopy (SEM) show that CNFs are capable of forming strong interfacial bonding with cement matrices. Experimental results using nanoindentation reveal that the addition of CNFs in cement composites increases the proportions of high-density calcium-silicate-hydrate gel (HD-CSH) compared to low-density CSH gel...
June 16, 2017: Materials
https://www.readbyqxmd.com/read/28762523/prediction-accuracy-and-variable-selection-for-penalized-cause-specific-hazards-models
#3
Maral Saadati, Jan Beyersmann, Annette Kopp-Schneider, Axel Benner
We consider modeling competing risks data in high dimensions using a penalized cause-specific hazards (CSHs) approach. CSHs have conceptual advantages that are useful for analyzing molecular data. First, working on hazards level can further understanding of the underlying biological mechanisms that drive transition hazards. Second, CSH models can be used to extend the multistate framework for high-dimensional data. The CSH approach is implemented by fitting separate proportional hazards models for each event type (iCS)...
August 1, 2017: Biometrical Journal. Biometrische Zeitschrift
https://www.readbyqxmd.com/read/28760455/association-between-virulence-profile-biofilm-formation-and-phylogenetic-groups-of-escherichia-coli-causing-urinary-tract-infection-and-the-commensal-gut-microbiota-a-comparative-analysis
#4
Zahra Hashemizadeh, Davood Kalantar-Neyestanaki, Shahla Mansouri
Variety of virulence factors are involved in the pathogenicity of Escherichia coli, the common cause of the urinary tract infections (UTIs). The aim of this study was to determine some virulence factors involved in the pathogenicity and the phylogenetic grouping of E. coli from UTIs compared with the E. coli isolates from gut microbiota (fecal flora). The isolates were tested for biofilm formation, haemagglutination, cell surface hydrophobicity (CSH), hemolysin production, phylogenetic grouping and the distribution of 6 known virulence genes...
July 29, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28730269/emergence-of-candida-glabrata-in-vulvovaginal-candidiasis-should-be-attributed-to-selective-pressure-or-virulence-ability
#5
Sandra Sayuri Nakamura-Vasconcelos, Adriana Fiorini, Pamela Delvas Zanni, Patrícia de Souza Bonfim-Mendonça, Janine Ribeiro Godoy, Adriana Araújo Almeida-Apolonio, Marcia Edilaine Lopes Consolaro, Terezinha Inez Estivalet Svidzinski
PURPOSE: Vulvovaginal candidiasis (VVC) is one of the most frequent female genital disorders and Candida glabrata is the second most common agent. Current study was aimed to study the susceptibility to antifungal agents of C. glabrata isolated from vaginal samples and some virulence attributes in order to better understand why this species is emerging as the main VVC agents. METHODS: A total of 60 C. glabrata vaginal isolates were included in this study. Firstly they were screened by susceptibility tests to antifungal agents...
July 20, 2017: Archives of Gynecology and Obstetrics
https://www.readbyqxmd.com/read/28711452/hematopoietic-stem-cell-transplantation-in-algeria
#6
REVIEW
M A Bekadja, M Brahimi, S Osmani, N Yafour, A Krim, F Serradj, S Talhi, K Amani, R Bouhass
Algeria is a country of 40.4 million inhabitants half of whom are younger than 30years. In Algeria, healthcare insurance covers 90% of the population. Healthcare is free and it is supported by the Ministry of Health. Sixteen university hospitals exist in Algeria and only two (Algiers and Oran) practice bone marrow transplant. Hematologic malignancies in adults account for 10% (∼4000 new cases/y) of the malignancy affecting in most cases young patients under 65years of age. In 2016, 270 transplants were performed (Algiers and Oran), including 149 allografts (related donor transplants: 99%) and 121 autografts...
July 11, 2017: Hematology/oncology and Stem Cell Therapy
https://www.readbyqxmd.com/read/28674772/detection-of-unexpected-emergency-diseases-using-fdg-pet-ct-in-oncology-patients
#7
Akira Toriihara, Emi Yamaga, Masashi Nakadate, Jun Oyama, Ukihide Tateishi
PURPOSE: To evaluate the frequency of emergency diseases that were detected unexpectedly using FDG-PET/CT. MATERIALS AND METHODS: Interpretation reports for 11,663 FDG-PET/CT studies in our hospital were retrospectively reviewed. Patients with major emergency diseases were extracted according to the following exclusion criteria: (1) relevant findings had been recognized prior to the PET/CT; (2) an intervention or operation that may have been relevant to the present findings was performed within 1 month prior to the PET/CT; and (3) the clinical course could not be investigated sufficiently (e...
July 3, 2017: Japanese Journal of Radiology
https://www.readbyqxmd.com/read/28640439/skin-inspired-multifunctional-autonomic-intrinsic-conductive-self-healing-hydrogels-with-pressure-sensitivity-stretchability-and-3d-printability
#8
Mohammad Ali Darabi, Ali Khosrozadeh, Rene Mbeleck, Yuqing Liu, Qiang Chang, Junzi Jiang, Jun Cai, Quan Wang, Gaoxing Luo, Malcolm Xing
The advent of conductive self-healing (CSH) hydrogels, a class of novel materials mimicking human skin, may change the trajectory of the industrial process because of their potential applications in soft robots, biomimetic prostheses, and health-monitoring systems. Here, the development of a mechanically and electrically self-healing hydrogel based on physically and chemically cross-linked networks is reported. The autonomous intrinsic self-healing of the hydrogel is attained through dynamic ionic interactions between carboxylic groups of poly(acrylic acid) and ferric ions...
June 22, 2017: Advanced Materials
https://www.readbyqxmd.com/read/28587096/the-effect-of-platelet-rich-fibrin-calcium-sulfate-hemihydrate-platelet-rich-plasma-and-resorbable-collagen-on-soft-tissue-closure-of-extraction-sites
#9
Lisa M Yerke, Amal Jamjoom, Talal M Zahid, Robert E Cohen
Rapid and complete soft tissue healing after tooth extraction minimizes surgical complications and facilitates subsequent implant placement. We used four treatment methods and assessed changes in soft tissue socket closure following tooth extraction in humans. The effects of platelet-rich fibrin-calcium sulfate hemihydrate (PRF-CSH), platelet-rich plasma-calcium sulfate hemihydrate (PRP-CSH), a resorbable collagen dressing (RCD), and no grafting material were compared in a randomized, controlled pilot study with a blinded parallel design (N = 23)...
May 25, 2017: Journal of Functional Biomaterials
https://www.readbyqxmd.com/read/28580902/enhanced-bone-formation-by-strontium-modified-calcium-sulfate-hemihydrate-in-ovariectomized-rat-critical-size-calvarial-defects
#10
Shenyu Yang, Lei Wang, Shanbao Feng, Qinmeng Yang, Bin Yu, Mei Tu
The development of a new generation of biomaterials with high osteogenic ability for treatment of osteoporotic fractures is being intensively investigated. The objective of this paper was to investigate new bone formation in an ovariectomized rat (OVX rat) calvarial model of critical size bone defects filled with Sr-containing α-calcium sulfate hemihydrate (SrCSH) cement compared to an α-calcium sulfate hemihydrate (α-CSH) cement and empty defect. X-ray diffraction analysis verified the partial substitution of Sr(2+) for Ca(2+) did not change the phase composition of α-CSH...
June 5, 2017: Biomedical Materials
https://www.readbyqxmd.com/read/28577467/ag-agcl-nanoparticles-modified-cdsno3%C3%A2-3h2o-nanocubes-photocatalyst-for-the-degradation-of-methyl-orange-and-antibiotics-under-visible-light-irradiation
#11
Shi-Feng Yang, Cheng-Gang Niu, Da-Wei Huang, Huan Zhang, Guang-Ming Zeng
CdSnO3·3H2O (CSH) nanocubes modified with Ag/AgCl nanoparticles were constructed via the ultrasonic-assisted precipitation-photoreduction method. The obtained samples were characterized using various analytical techniques. Methyl orange (MO), tetracycline (TC), and oxytetracycline hydrochloride (OTC-HCl) were degraded as target pollutants under visible light irradiation to evaluate the photocatalytic activity of the as-prepared samples. Compared with pure CSH and Ag/AgCl nanoparticles, the developed composite of which 5mL of AgNO3 was added on the synthesis, labelled as 5-Ag/AgCl/CSH, occupied the best photocatalytic activity...
May 28, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28543543/cardiac-implantable-electronic-device-hematomas-risk-factors-and-effect-of-prophylactic-pressure-bandaging
#12
Youlin Koh, Nicholas E Bingham, Natalie Law, Dustin Le, Justin A Mariani
BACKGROUND: Cardiac implantable electronic device (CIED) hematomas are associated with many adverse outcomes. We examined the incidence and risk factors associated with hematoma formation post-CIED implantation, and explored the preventative effect of prophylactic pressure bandaging (PPB) in a large tertiary center. METHODS: 1,091 devices were implanted during October 2011-December 2014. Clinically significant hematomas (CSH) were those that necessitated prolonged admission, including those due to reoperation, and clinically suspicious hematomas were swellings noted by medical/nursing staff...
July 2017: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/28529763/characterisation-of-a-novel-poly-ether-ether-ketone-calcium-sulphate-composite-for-bone-augmentation
#13
Erik A B Hughes, Liam M Grover
BACKGROUND: Calcium sulphate (CS) has been used in bone grafting since the 1800s. It has not replaced autograft as the gold standard, however, since its dissolution occurs rapidly in bodily fluids, meaning that the material cannot support long-term bone growth. Here, the polymer poly (ether ether ketone) (PEEK) was used to slow dissolution in in vitro physiological environments and augment the mechanical properties of the material. METHODS: PEEK/CS specimens were fabricated by combining powders of PEEK and CS with water, resulting in a hardening paste...
2017: Biomaterials Research
https://www.readbyqxmd.com/read/28527762/effects-of-rhamnolipids-on-microorganism-characteristics-and-applications-in-composting-a-review
#14
REVIEW
Binbin Shao, Zhifeng Liu, Hua Zhong, Guangming Zeng, Guansheng Liu, Mingda Yu, Yang Liu, Xin Yang, Zhigang Li, Zhendong Fang, Juntao Zhang, Chenghao Zhao
Biosurfactant rhmnolipids have been applied in many fields, especially in environmental bioremediation. According to previous researches, many research groups have studied the influence of rhamnolipids on microorganism characteristics and/or its application in composting. In this review, the effects of rhamnolipids on the cell surface properties of microorganisms was discussed firstly, such as cell surface hydrophobicity (CSH), electrical, surface compounds, etc. Moreover, the deeper mechanisms were also discussed, such as the effects of rhamnolipids on the structural characteristics and functional characteristics of the cell membrane, and the effects of rhamnolipids on the related enzymes and genes...
July 2017: Microbiological Research
https://www.readbyqxmd.com/read/28522758/regulation-of-erythropoiesis-after-normoxic-return-from-chronic-sustained-and-intermittent-hypoxia
#15
Jihyun Song, Krishna Sundar, Radhika Gangaraju, Josef T Prchal
Hypoxia increases erythropoiesis mediated by hypoxia-inducible transcription factors (HIF) which regulate erythropoietin (EPO) transcription. Neocytolysis is a physiological mechanism that corrects polycythemia from chronic sustained hypoxemia (CSH) by transient, preferential destruction of young RBCs after normoxia is restored. We showed that neocytolysis is caused by excessive mitochondrial-derived reactive oxygen species (ROS) in reticulocytes mediated by down-regulation of HIF-controlled BNIP3L regulated mitophagy and a decrease in RBC antioxidant catalase (CAT) in hypoxia-produced erythrocytes...
May 18, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28472690/nanoparticles-based-on-chitosan-hydrochloride-hyaluronic-acid-peg-containing-curcumin-in-vitro-evaluation-and-pharmacokinetics-in-rats
#16
Yurui Xu, Sajid Asghar, Liu Yang, Zhipeng Chen, Hongying Li, Wenwen Shi, Yibo Li, Qinqing Shi, Qineng Ping, Yanyu Xiao
Nanoparticles based on chitosan hydrochloride (CSH)-hyaluronic acid (HA)-PEG were prepared for delivering curcumin (CUR) (CUR-PNPs) to brain tumor. CUR-PNPs of 245.9nm and spherical morphology were obtained at optimized CSH/HA/PEG20000/CUR ratios with negative charge of about -27.2mV and EE of approximately 93.3%. Cytotoxicity studies showed that CUR-PNPs improved drug's anticancer activity in rat glioma cells (C6). The cellular uptake mechanism study showed active targeting of CUR-PNPs into C6 cells by HA mediated endocytosis...
September 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28449875/development-and-validation-of-a-quantitative-confirmatory-method-for-30-%C3%AE-lactam-antibiotics-in-bovine-muscle-using-liquid-chromatography-coupled-to-tandem-mass-spectrometry
#17
M Di Rocco, M Moloney, T O'Beirne, S Earley, B Berendsen, A Furey, M Danaher
A method was developed for the confirmatory and quantitative analysis of 30 β-lactam antibiotic residues in bovine muscle. The method includes 12 penicillins (amoxicillin, ampicillin, cloxacillin, dicloxacillin, mecillinam, methicillin, nafcillin, oxacillin, penicillin G, penicillin V, piperacillin, ticarcillin), 12 cephalosporins (cefacetrile, cefadroxil, cephalexin, cefalonium, cefazolin, cefoperazone, cefotaxime, cefquinome, cefuroxime, desacetyl cephapirin, desfuroylceftiofur cysteine disulfide, desfuroylceftiofur dimer), five carbapenems (biapenem, doripenem, ertapenem, imipenem, meropenem) and faropenem...
April 12, 2017: Journal of Chromatography. A
https://www.readbyqxmd.com/read/28441046/characterization-of-long-term-elution-of-platinum-from-carboplatin-impregnated-calcium-sulfate-hemihydrate-beads-in-vitro-by-two-distinct-sample-collection-methods
#18
COMPARATIVE STUDY
Rachel J Tulipan, Heidi Phillips, Laura D Garrett, Levent Dirikolu, Mark A Mitchell
OBJECTIVE To characterize long-term elution of platinum from carboplatin-impregnated calcium sulfate hemihydrate (CI-CSH) beads in vitro by comparing 2 distinct sample collection methods designed to mimic 2 in vivo environments. SAMPLES 162 CI-CSH beads containing 4.6 mg of carboplatin (2.4 mg of platinum/bead). PROCEDURES For method 1, which mimicked an in vivo environment with rapid and complete fluid exchange, each of 3 plastic 10-mL conical tubes contained 3 CI-CSH beads and 5 mL of PBS solution. Eluent samples were obtained by evacuation of all fluid at 1, 2, 3, 6, 9, and 12 hours and 1, 2, 3, 6, 9, 12, 15, 18, 22, 26, and 30 days...
May 2017: American Journal of Veterinary Research
https://www.readbyqxmd.com/read/28405790/csh-guidelines-for-the-diagnosis-and-treatment-of-drug-induced-liver-injury
#19
EDITORIAL
Yue-Cheng Yu, Yi-Min Mao, Cheng-Wei Chen, Jin-Jun Chen, Jun Chen, Wen-Ming Cong, Yang Ding, Zhong-Ping Duan, Qing-Chun Fu, Xiao-Yan Guo, Peng Hu, Xi-Qi Hu, Ji-Dong Jia, Rong-Tao Lai, Dong-Liang Li, Ying-Xia Liu, Lun-Gen Lu, Shi-Wu Ma, Xiong Ma, Yue-Min Nan, Hong Ren, Tao Shen, Hao Wang, Ji-Yao Wang, Tai-Ling Wang, Xiao-Jin Wang, Lai Wei, Qing Xie, Wen Xie, Chang-Qing Yang, Dong-Liang Yang, Yan-Yan Yu, Min-de Zeng, Li Zhang, Xin-Yan Zhao, Hui Zhuang
Drug-induced liver injury (DILI) is an important clinical problem, which has received more attention in recent decades. It can be induced by small chemical molecules, biological agents, traditional Chinese medicines (TCM), natural medicines (NM), health products (HP), and dietary supplements (DS). Idiosyncratic DILI is far more common than intrinsic DILI clinically and can be classified into hepatocellular injury, cholestatic injury, hepatocellular-cholestatic mixed injury, and vascular injury based on the types of injured target cells...
May 2017: Hepatology International
https://www.readbyqxmd.com/read/28402014/advanced-treatment-technique-for-swine-wastewater-using-two-agents-thermally-polymerized-amorphous-silica-and-hydrated-lime-for-color-and-phosphorus-removal-and-sulfur-for-nitrogen-removal
#20
Teruaki Hasegawa, Yohei Kurose, Yasuo Tanaka
The efficacy of advanced treatment of swine wastewater using thermally polymerized, modified amorphous silica and hydrated lime (M-CSH-lime) for color and phosphorus removal and sulfur for nitrogen removal was examined with a demonstration-scale treatment plant. The color removal rate was approximately 78% at M-CSH-lime addition rates of > 0.055 wt/v%. The PO43--P removal rate exceeded 99.9% with > 0.023 wt/v%. pH of the effluent from the M-CSH-lime reactor increased with the addition rate till a maximum value of 12...
April 12, 2017: Animal Science Journal, Nihon Chikusan Gakkaihō
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