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https://www.readbyqxmd.com/read/28330323/modification-of-sargassum-angustifolium-by-molybdate-during-a-facile-cultivation-for-high-rate-phosphate-removal-from-wastewater-structural-characterization-and-adsorptive-behavior
#1
Firozeh Saberzadeh Sarvestani, Hossein Esmaeili, Bahman Ramavandi
In this paper, a new and facile approach for molybdate loading in the brown algae of Sargassum angustifolium is introduced. The molybdate ions were entered into the algae body during a short cultivation to produce algae-Mo as a novel adsorbent for eliminating phosphate ions from synthetic and real wastewaters. Results of the surface analysis showed that molybdate loading onto the algae was successfully performed. Herein, basic variables, such as initial solution pH, adsorbent dosage, contact time, phosphate concentration, and temperature, were investigated in detail to assess the phosphate adsorption performance of algae-Mo...
December 2016: 3 Biotech
https://www.readbyqxmd.com/read/28330311/scaling-up-a-virginiamycin-production-by-a-high-yield-streptomyces-virginiae-vkm-ac-2738d-strain-using-adsorbing-resin-addition-and-fed-batch-fermentation-under-controlled-conditions
#2
Vakhtang Dzhavakhiya, Vyacheslav Savushkin, Alexander Ovchinnikov, Vladislav Glagolev, Veronika Savelyeva, Evgeniya Popova, Nikita Novak, Elena Glagoleva
Virginiamycin produced by Streptomyces virginiae as a natural mix of macrocyclic peptidolactones M and S is widely used in the industrial production of ethanol fuel and as an antibiotic feed additive for cattle and poultry. Its main antimicrobial components, M1 and S1 factors, act synergistically if the M1:S1 ratio in the final product is 70-75:25-30. This fact significantly complicates the development of stable high-yield strains suitable for industrial application. In the previous work, authors obtained a mutant S...
December 2016: 3 Biotech
https://www.readbyqxmd.com/read/28330282/in-vitro-cytotoxicity-and-antibacterial-activity-of-silver-coated-electrospun-polycaprolactone-gelatine-nanofibrous-scaffolds
#3
Mim Mim Lim, Naznin Sultana
The development of nano-sized scaffolds with antibacterial properties that mimic the architecture of tissue is one of the challenges in tissue engineering. In this study, polycaprolactone (PCL) and PCL/gelatine (Ge) (70:30) nanofibrous scaffolds were fabricated using a less toxic and common solvent, formic acid and an electrospinning technique. Nanofibrous scaffolds were coated with silver (Ag) in different concentrations of silver nitrate (AgNO3) aqueous solution (1.25, 2.5, 5, and 10 %) by using dipping method, drying and followed by ultraviolet (UV) photoreduction...
December 2016: 3 Biotech
https://www.readbyqxmd.com/read/28330154/inhibition-of-a-sulfate-reducing-bacterium-desulfovibrio-marinisediminis-gsr3-by-biosynthesized-copper-oxide-nanoparticles
#4
Kiana Alasvand Zarasvand, V Ravishankar Rai
To control the severe problem of microbiologically influenced corrosion, industries require highly potent antibacterial agent which can inhibit the growth of bacteria on man-made surfaces. This need drove the research towards the synthesis of nanoscale antimicrobial compounds. We, therefore, screened several bacteria for the biosynthesis of copper/copper compound nanoparticles which could inhibit the growth of Desulfovibrio marinisediminis, a sulfate reducing bacterium. Supernatant of thirty bacteria isolated from the biofilm formed on ship hull was mixed with 1 mM CuCl2 solution at room temperature...
June 2016: 3 Biotech
https://www.readbyqxmd.com/read/28330153/an-evaluation-of-the-major-factors-influencing-the-removal-of-copper-ions-using-the-egg-shell-dromaius-novaehollandiae-chitosan-agaricus-bisporus-composite
#5
R K Anantha, S Kota
Rapid industrialisation, technological development, urbanization and increase in population in the recent past coupled with unplanned and unscientific disposal methods led to increased heavy metal levels in water. Realizing the need for development of eco-friendly and cost effective methods, the present investigation was done for the adsorptive removal of copper from aqueous solutions with Dromaius novaehollandiae eggshell and chitosan composite. By one variable at a time method, the optimum contact time was found to be 60 min with an adsorbent dosage of 8 g/L at pH 6, initial adsorbate concentration of 20 mg/L and temperature 30 °C...
June 2016: 3 Biotech
https://www.readbyqxmd.com/read/28329823/a-typology-to-explain-changing-social-networks-post-stroke
#6
Sarah Northcott, Shashivadan P Hirani, Katerina Hilari
Background and Objectives: Social network typologies have been used to classify the general population but have not previously been applied to the stroke population. This study investigated whether social network types remain stable following a stroke, and if not, why some people shift network type. Research Design and Methods: We used a mixed methods design. Participants were recruited from two acute stroke units. They completed the Stroke Social Network Scale (SSNS) two weeks and six months post stroke and in-depth interviews 8-15 months following the stroke...
March 14, 2017: Gerontologist
https://www.readbyqxmd.com/read/28329795/construct-validation-of-wenger-s-support-network-typology
#7
Agnes Szabo, Christine Stephens, Joanne Allen, Fiona Alpass
Objectives: The study aimed to validate Wenger's empirically derived support network typology of responses to the Practitioner Assessment of Network Type (PANT) in an older New Zealander population. The configuration of network types was tested across ethnic groups and in the total sample. Method: Data (N = 872, Mage = 67 years, SDage = 1.56 years) from the 2006 wave of the New Zealand Health, Work and Retirement study were analyzed using latent profile analysis...
October 7, 2016: Journals of Gerontology. Series B, Psychological Sciences and Social Sciences
https://www.readbyqxmd.com/read/28329728/nanohybrid-magnetic-liposome-functionalized-with-hyaluronic-acid-for-enhanced-cellular-uptake-and-near-infrared-triggered-drug-release
#8
Van Du Nguyen, Shaohui Zheng, Jiwon Han, Viet Ha Le, Jong-Oh Park, Sukho Park
The aim of this work is to prepare and evaluate a novel lipid-polymer hybrid liposomal nanoplatform (hyaluronic acid-magnetic nanoparticle-liposomes, HA-MNP-LPs) as a vehicle for targeted delivery and triggered release of an anticancer drug (docetaxel, DTX) in human breast cancer cells. We first synthesize an amphiphilic hyaluronic acid hexadecylamine polymer (HA-C16) to enhance the targeting ability of the hybrid liposome. Next, HA-MNP-LPs are constructed to achieve an average size of 189.93±2.74nm in diameter...
March 8, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28329714/high-purity-silver-microcrystals-recovered-from-silver-wastes-by-eco-friendly-process-using-hydrogen-peroxide
#9
Harnchana Gatemala, Sanong Ekgasit, Kanet Wongravee
A simple, rapid, and environmentally friendly process using hydrogen peroxide, was developed for recovering high purity silver directly from industry and laboratory wastes. Silver ammine complex, [Ag(NH3)2](+)Cl(-), derived from AgCl were generated and then directly reduced using H2O2 to reliably turn into high purity microcrystalline silver (99.99%) examined by EDS and XRD. Morphology of the recovered silver microcrystals could be selectively tuned by an addition of poly(vinyl pyrrolidone). The main parameters in the recovering process including pH, concentration of Ag(+) and the mole ratio of H2O2:Ag(+) were carefully optimized though the central composite design (CCD)...
March 14, 2017: Chemosphere
https://www.readbyqxmd.com/read/28329708/transformation-of-para-arsanilic-acid-by-manganese-oxide-adsorption-oxidation-and-influencing-factors
#10
Tista Prasai Joshi, Gong Zhang, Hanyang Cheng, Ruiping Liu, Huijuan Liu, Jiuhui Qu
Aromatic organoarsenic compounds tend to transform into more mobile toxic inorganic arsenic via several processes, and can inadvertently spread toxic inorganic arsenic through the environment to water sources. To gain insight into the transformation mechanisms, we herein investigated how the process of para arsanilic acid (p-ASA) transformation works in detail on the surface of adsorbents by comparing it with phenylarsonic acid (PA) and aniline, which have similar chemical structures. In contrast to the values of 0...
March 18, 2017: Water Research
https://www.readbyqxmd.com/read/28329646/gaps-in-the-understanding-and-treatment-of-skin-cancer-in-people-of-color
#11
Ajay Kailas
People of color are at significantly higher risk in mortality from skin cancers, such as melanoma, than Caucasians. Around 4,500,000 people of color are affected by skin cancer The five-year survival rates from melanoma are 81.1% for Hispanics, 80.2% for Asians, 72.2% for African- Americans, and 89.6% for Caucasians. For this reason, it is important to ensure the scientific literature reflects the most up to date recommendations and treatment for blacks regarding skin cancer. Therefore the authors conducted a "gap analysis" on the current treatment of skin cancer in people of color...
September 15, 2016: Dermatology Online Journal
https://www.readbyqxmd.com/read/28329605/psoriasis-in-latin-america
#12
Edgardo Chouela, Mario Amaya, Angela Londoño, Ricardo Romiti, Fernando Valenzuela, Artur A Duarte, Ricardo Perez Alfonzo, Cecilia Borlenghi
During the last few decades, management of psoriasis has changed worldwide, owing to a better understanding of its pathophysiology and the introduction of new treatments. As experts in the field of dermatology, specialists from Latin America collaborated to develop this review and further provide an update on the current state of psoriasis management in Latin America. With the goal of summarizing the latest information on psoriasis in most countries in Latin America, we conducted a literature search to obtain relevant articles published in the medical/scientific literature in Latin American countries over the last 10 years; in addition, we completed a questionnaire comprised of 20 questions on important issues related to psoriasis...
September 15, 2016: Dermatology Online Journal
https://www.readbyqxmd.com/read/28329559/factors-correlated-with-residents-decisions-to-enter-academic-dermatology
#13
Brenda M Morales-Pico, Cary C Cotton, Dean S Morrell
The demand for dermatologic services and training at academic medical centers has outpaced the growth in the field's academic workforce. Recruitment of graduating residents has been proposed as a solution to the shortage of academic dermatologists. The purpose of this study was to further our current understanding of the factors that support the recruitment and retention of academicians. A survey questionnaire was mailed to graduates of the dermatology residency program at the University of North Carolina, and data were gathered retrospectively from participants' residency application materials...
November 15, 2016: Dermatology Online Journal
https://www.readbyqxmd.com/read/28329467/unna-boot-central-gauze-technique-for-chronic-venous-leg-ulcers
#14
Anne L Gao, Justin G Cole, William V Stoecker
BACKGROUND: Venous leg ulcers generally take manyweeks to heal. Novel therapies that shorten healingtime and require less complex care are needed. PURPOSE: The purpose of this report is to presenta pilot study for a new method that can result ina faster healing time for venous leg ulcers usinginexpensive materials. METHODS: A central-gauzeprotocol was developed as described here. A three-ply gauze sponge was placed in the center of theulcer, allowing a peripheral 3-5 mm rim of ulcer toremain exposed...
January 15, 2017: Dermatology Online Journal
https://www.readbyqxmd.com/read/28329431/an-analytical-method-for-groundwater-inflow-into-a-drained-circular-tunnel
#15
Kai Su, Yafeng Zhou, Hegao Wu, Changzheng Shi, Li Zhou
Groundwater inflow estimation is essential for the design and construction of tunnel and the assessment of the environmental impacts. Analytical solutions used in current engineering practice do not adequately account for the effect of the excavation-induced drawdown, which leads to significant change in pore water pressure distribution and reductions of the water level beyond tunnel. Based on the numerical analysis results, this article proposes semianalytical method to predict the height of lowered water level and groundwater tunnel inflow...
March 22, 2017: Ground Water
https://www.readbyqxmd.com/read/28329148/myocardial-energy-metabolism-and-ultrastructure-with-polarizing-and-depolarizing-cardioplegia-in-a-porcine-model%C3%A2
#16
Terje Aass, Lodve Stangeland, David J Chambers, Seth Hallström, Christine Rossmann, Bruno K Podesser, Malte Urban, Knut Nesheim, Rune Haaverstad, Knut Matre, Ketil Grong
OBJECTIVES: This study investigated whether the novel St. Thomas' Hospital polarizing cardioplegic solution (STH-POL) with esmolol/adenosine/magnesium offers improved myocardial protection by reducing demands for high-energy phosphates during cardiac arrest compared to the depolarizing St. Thomas' Hospital cardioplegic solution No 2 (STH-2). METHODS: Twenty anaesthetised pigs on tepid cardiopulmonary bypass were randomized to cardiac arrest for 60 min with antegrade freshly mixed, repeated, cold, oxygenated STH-POL or STH-2 blood cardioplegia every 20 min...
March 2, 2017: European Journal of Cardio-thoracic Surgery
https://www.readbyqxmd.com/read/28329094/biological-solutions-to-aortic-root-replacement-valve-sparing-versus-bioprosthetic-conduit%C3%A2
#17
Mario Gaudino, Antonino Di Franco, Lucas B Ohmes, Luca Weltert, Christopher Lau, Ivancarmine Gambardella, Andrea Salica, Monica Munjal, Mohamed Elsayed, Leonard N Girardi, Ruggero De Paulis
OBJECTIVES: Valve-sparing operations and root replacement with a biologic composite conduit are viable options in aortic root aneurysm. This study was conceived to compare the early and mid-term results of these 2 procedures. METHODS: From September 2002 to November 2015, 749 consecutive patients underwent either a valve-sparing operation or a root replacement with a biologic composite conduit at 2 institutions. Propensity score matching was used to compare similar cohorts of patients in the overall population and in the ≤ 55 and ≥ 65-year age groups...
February 17, 2017: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/28328884/aggression-in-group-housed-laboratory-mice-why-can-t-we-solve-the-problem
#18
Elin M Weber, Jamie Ahloy Dallaire, Brianna N Gaskill, Kathleen R Pritchett-Corning, Joseph P Garner
Group housing is highly important for social animals. However, it can also give rise to aggression, one of the most serious welfare concerns in laboratory mouse husbandry. Severe fighting can lead to pain, injury and even death. In addition, working with animals that are severely socially stressed, wounded or singly-housed as a result of aggression may compromise scientific validity. Some general recommendations on how to minimize aggression exist, but the problem persists. Thus far, studies attempting to find solutions have mainly focused on social dominance and territorial behavior, but many other aspects of routine housing and husbandry that might influence aggressive behavior have been overlooked...
March 22, 2017: Lab Animal
https://www.readbyqxmd.com/read/28328876/reproducibility-of-histopathological-findings-in-experimental-pathology-of-the-mouse-a-sorry-tail
#19
Jerrold M Ward, Paul N Schofield, John P Sundberg
Reproducibility of in vivo research using the mouse as a model organism depends on many factors, including experimental design, strain or stock, experimental protocols, and methods of data evaluation. Gross and histopathology are often the endpoints of such research and there is increasing concern about the accuracy and reproducibility of diagnoses in the literature. To reproduce histopathological results, the pathology protocol, including necropsy methods and slide preparation, should be followed by interpretation of the slides by a pathologist familiar with reading mouse slides and familiar with the consensus medical nomenclature used in mouse pathology...
March 22, 2017: Lab Animal
https://www.readbyqxmd.com/read/28328735/building-workforce-capacity-abroad-while-strengthening-global-health-programs-at-home-participation-of-seven-harvard-affiliated-institutions-in-a-health-professional-training-initiative-in-rwanda
#20
Corrado Cancedda, Robert Riviello, Kim Wilson, Kirstin W Scott, Meenu Tuteja, Jane R Barrow, Bethany Hedt-Gauthier, Gene Bukhman, Jennifer Scott, Danny Milner, Giuseppe Raviola, Barbara Weissman, Stacy Smith, Tej Nuthulaganti, Craig D McClain, Barbara E Bierer, Paul E Farmer, Anne E Becker, Agnes Binagwaho, Joseph Rhatigan, David E Golan
A consortium of 22 U.S. academic institutions is currently participating in the Rwanda Human Resources for Health Program (HRH Program). Led by the Rwandan Ministry of Health and funded by both the U.S. Government and the Global Fund to Fight AIDS, Tuberculosis and Malaria, the primary goal of this seven-year initiative is to help Rwanda train the number of health professionals necessary to reach the country's health workforce targets. Since 2012, the participating U.S. academic institutions have deployed faculty from a variety of health-related disciplines and clinical specialties to Rwanda...
March 21, 2017: Academic Medicine: Journal of the Association of American Medical Colleges
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