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https://www.readbyqxmd.com/read/28346909/bioaugmentaton-in-technosols-created-in-abandoned-pyritic-tailings-can-contribute-to-enhance-soil-c-sequestration-and-plant-colonization
#1
Raúl Zornoza, Melisa Gómez-Garrido, Silvia Martínez-Martínez, María Dolores Gómez-López, Ángel Faz
Creation of Technosols in combination with phytostabilization may be a sustainable strategy to minimize the environmental and human health hazards derived from mine tailings. Bioaugmentation can facilitate plant establishment and growth for efficient phytostabilization. In order to assess if bioaugmentation can increase soil quality and fertility, decrease metal(loid) mobility and accelerate plant colonization, a one-year field experiment was designed with creation of Technosols in two tailings ponds with different pH (acidic (AT) and neutral (NT)), with addition of marble waste (MaW) and two organic materials (pig manure (PM) and sewage sludge (SS), without or with inoculation of effective microorganisms (EM) at three rates...
March 24, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28346497/determinants-of-infant-nutritional-status-in-dabat-district-north-gondar-ethiopia-a-case-control-study
#2
Amarech Asratie Wubante
BACKGROUND: Malnutrition is the top cause of global burden of disease, disability and mortality among infants. Over two-thirds of deaths of children globally occur during the first year of life (infancy). Malnutrition among infants is substantially high in Ethiopia. Therefore, this study is aimed to assess determinants of infant nutritional status. METHODS: A community based nested case-control study was conducted from February to June 2013 in Dabat district. A total of 80 cases and 320 controls (1:4 ratios) were studied...
2017: PloS One
https://www.readbyqxmd.com/read/28345959/ventilatory-inefficiency-and-exertional-dyspnea-in-early-chronic-obstructive-pulmonary-disease
#3
J Alberto Neder, Danilo C Berton, Paulo de Tarso Müller, Amany F Elbehairy, Alcides Rocha, Paolo Palange, Denis E O'Donnell
Exertional dyspnea is present across the spectrum of chronic obstructive pulmonary disease (COPD) severity. However, without realizing it themselves, patients may decrease daily physical activity to avoid distressing respiratory sensations. Dyspnea also may be associated with deconditioning. Cardiopulmonary exercise testing can uncover exertional dyspnea and its physiological determinants in patients with preserved or only mildly-reduced FEV1. Dyspnea in mild COPD can largely be explained by increased "wasted" ventilation in the physiological dead space which heightens the drive to breathe and worsens the inspiratory mechanical constraints...
March 27, 2017: Annals of the American Thoracic Society
https://www.readbyqxmd.com/read/28345896/transcriptomics-and-lipidomics-of-the-environmental-strain-rhodococcus-ruber-point-out-consumption-pathways-and-potential-metabolic-bottlenecks-for-polyethylene-degradation
#4
Kevin Gravouil, Romain Ferru-Clement, Steven Colas, Reynald Helye, Linette Kadri, Ludivine Bourdeau, Bouziane Moumen, Anne Mercier, Thierry Ferreira
Polyethylene (PE), one of the most prominent synthetic polymer used worldwide, is very poorly biodegradable in the natural environment. Consequently, PE represents by itself more than half of all plastic wastes. PE biodegradation is achieved through the combination of abiotic and biotic processes. Several microorganisms have been shown to grow on the surface of PE materials, among which are the species of the Rhodococcus genus, suggesting a potent ability of these microorganisms to use, at least partly, PE as a potent carbon source...
March 27, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28344992/mechanism-of-deletion-removing-all-dystrophin-exons-in-a-canine-model-for-dmd-implicates-concerted-evolution-of-x-chromosome-pseudogenes
#5
D Jake VanBelzen, Alock S Malik, Paula S Henthorn, Joe N Kornegay, Hansell H Stedman
Duchenne muscular dystrophy (DMD) is a lethal, X-linked, muscle-wasting disorder caused by mutations in the large, 2.4-Mb dystrophin gene. The majority of DMD-causing mutations are sporadic, multi-exon, frameshifting deletions, with the potential for variable immunological tolerance to the dystrophin protein from patient to patient. While systemic gene therapy holds promise in the treatment of DMD, immune responses to vectors and transgenes must first be rigorously evaluated in informative preclinical models to ensure patient safety...
March 17, 2017: Molecular Therapy. Methods & Clinical Development
https://www.readbyqxmd.com/read/28344902/isolation-and-characterization-of-human-articular-chondrocytes-from-surgical-waste-after-total-knee-arthroplasty-tka
#6
Jakob Naranda, Lidija Gradišnik, Mario Gorenjak, Matjaž Vogrin, Uroš Maver
BACKGROUND: Cartilage tissue engineering is a fast-evolving field of biomedical engineering, in which the chondrocytes represent the most commonly used cell type. Since research in tissue engineering always consumes a lot of cells, simple and cheap isolation methods could form a powerful basis to boost such studies and enable their faster progress to the clinics. Isolated chondrocytes can be used for autologous chondrocyte implantation in cartilage repair, and are the base for valuable models to investigate cartilage phenotype preservation, as well as enable studies of molecular features, nature and scales of cellular responses to alterations in the cartilage tissue...
2017: PeerJ
https://www.readbyqxmd.com/read/28344756/measuring-efficiency-of-knowledge-production-in-health-research-centers-using-data-envelopment-analysis-dea-a-case-study-in-iran
#7
Mohammad Meskarpour Amiri, Taha Nasiri, Seyed Hassan Saadat, Hosein Amini Anabad, Payman Mahboobi Ardakan
INTRODUCTION: Efficiency analysis is necessary in order to avoid waste of materials, energy, effort, money, and time during scientific research. Therefore, analyzing efficiency of knowledge production in health areas is necessary, especially for developing and in-transition countries. As the first step in this field, the aim of this study was the analysis of selected health research center efficiency using data envelopment analysis (DEA). METHODS: This retrospective and applied study was conducted in 2015 using input and output data of 16 health research centers affiliated with a health sciences university in Iran during 2010-2014...
November 2016: Electronic Physician
https://www.readbyqxmd.com/read/28344651/identification-of-a-novel-dmd-duplication-identified-by-a-combination-of-mlpa-and-targeted-exome-sequencing
#8
Beibei Wu, Liying Wang, Ting Dong, Jiahui Jin, Yili Lu, Huiping Wu, Yue Luo, Xiaoou Shan
BACKGROUND: Duchenne muscular dystrophy (DMD) is an X-linked recessive muscle-wasting disease caused by a mutation in the DMD gene. The aim of this study was to identify a de novo mutation of the DMD gene in the family of a 9-month-old Chinese male patient, as well as to describe the phenotypic characteristics of this patient. RESULTS: The patient was suspected to suffer from DMD according to physical examination, biochemical analyses, and electromyogram. We identified a duplication of exons 4-42 in DMD gene with targeted exome sequencing and multiplex ligation-dependent probe amplification (MLPA)...
2017: Molecular Cytogenetics
https://www.readbyqxmd.com/read/28344647/ternary-ionic-liquid-water-pretreatment-systems-of-an-agave-bagasse-and-municipal-solid-waste-blend
#9
Jose A Perez-Pimienta, Noppadon Sathitsuksanoh, Vicki S Thompson, Kim Tran, Teresa Ponce-Noyola, Vitalie Stavila, Seema Singh, Blake A Simmons
BACKGROUND: Pretreatment is necessary to reduce biomass recalcitrance and enhance the efficiency of enzymatic saccharification for biofuel production. Ionic liquid (IL) pretreatment has gained a significant interest as a pretreatment process that can reduce cellulose crystallinity and remove lignin, key factors that govern enzyme accessibility. There are several challenges that need to be addressed for IL pretreatment to become viable for commercialization, including IL cost and recyclability...
2017: Biotechnology for Biofuels
https://www.readbyqxmd.com/read/28344399/extraction-of-chitosan-and-its-oligomers-from-shrimp-shell-waste-their-characterization-and-antimicrobial-effect
#10
Tarun Kumar Varun, Swaraj Senani, Natasha Jayapal, Jayaram Chikkerur, Sohini Roy, Vijay Bhasker Tekulapally, Mayank Gautam, Narender Kumar
AIM: The present study was performed to utilize the shrimp shell waste for chitin and chitosan production, characterization by Fourier transform infrared (FT-IR) technique and to evaluate the antimicrobial effects of chitosan oligomers produced by depolymerization of chitosan by nitrous acid. MATERIALS AND METHODS: Chitosan was extracted from the shrimp shell waste by the chemical method and characterized by FT-IR. Chitooligomers were produced by depolymerising chitosan using nitrous acid, and the chitooligomers were tested for antimicrobial effect against four gut pathogenic organisms, i...
February 2017: Veterinary World
https://www.readbyqxmd.com/read/28343862/phosphorus-and-short-chain-fatty-acids-recovery-from-waste-activated-sludge-by-anaerobic-fermentation-effect-of-acid-or-alkali-pretreatment
#11
Liang Wu, Cheng Zhang, Hui Hu, Jianyong Liu, Tengfei Duan, Jinghuan Luo, Guangren Qian
Waste activated sludge (WAS) was pretreated by acid or alkali to enhance the anaerobic fermentation (AF) for phosphorus (P) and short-chain fatty acids (SCFAs) release into the liquid simultaneously. With acid pretreatment, the released total P concentration achieved 120mg/L, which was 71.4% higher than that with alkali pretreatment. In addition, alkali pretreatment enhanced organic P release with about 35.3% of organic P in the solid being converted to inorganic P, while little had changed with acid pretreatment...
March 6, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28343860/mesophilic-continuous-fermentative-hydrogen-production-from-acid-pretreated-de-oiled-jatropha-waste-hydrolysate-using-immobilized-microorganisms
#12
Gopalakrishnan Kumar, Periyasamy Sivagurunathan, Biswarup Sen, Sang-Hyoun Kim, Chiu-Yue Lin
Mesophilic hydrogen production from acid pretreated hydrolysate (biomass concentration of 100g/L and 2% hydrochloric acid) of de-oiled jatropha waste was carried out in continuous system using immobilized microorganisms at various hydraulic retention times (HRTs) ranging from 48 to 12h. The experimental results of the reusability of immobilized microorganisms showed their stability up to 10 cycles with an average cumulative hydrogen production of 770mL/L. The peak hydrogen production rate and hydrogen yield were 0...
March 11, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28343759/incidence-of-postsuppression-virologic-rebound-in-perinatally-hiv-infected-asian-adolescents-on-stable-combination-antiretroviral-therapy
#13
Tavitiya Sudjaritruk, Linda Aurpibul, Penh Sun Ly, Thoa Phan Kim Le, Torsak Bunupuradah, Rawiwan Hansudewechakul, Pagakrong Lumbiganon, Kulkanya Chokephaibulkit, Nik Khairulddin Nik Yusoff, Lam Van Nguyen, Kamarul Azahar Mohd Razali, Moy Siew Fong, Revathy A Nallusamy, Nia Kurniati, Viet Chau Do, David C Boettiger, Annette H Sohn, Azar Kariminia
PURPOSE: To assess the incidence and predictors of postsuppression virologic rebound (VR) among adolescents on stable combination antiretroviral therapy in Asia. METHODS: Perinatally HIV-infected Asian adolescents (10-19 years) with documented virologic suppression (two consecutive viral loads [VLs] <400 copies/mL ≥6 months apart) were included. Baseline was the date of the first VL <400 copies/mL at age ≥10 years or the 10th birthday for those with prior suppression...
March 23, 2017: Journal of Adolescent Health: Official Publication of the Society for Adolescent Medicine
https://www.readbyqxmd.com/read/28343744/new-technology-for-recovering-residual-metals-from-nonmetallic-fractions-of-waste-printed-circuit-boards
#14
Guangwen Zhang, Yaqun He, Haifeng Wang, Tao Zhang, Shuai Wang, Xing Yang, Wencheng Xia
Recycling of waste printed circuit boards is important for environmental protection and sustainable resource utilization. Corona electrostatic separation has been widely used to recycle metals from waste printed circuit boards, but it has poor separation efficiency for finer sized fractions. In this study, a new process of vibrated gas-solid fluidized bed was used to recycle residual metals from nonmetallic fractions, which were treated using the corona electrostatic separation technology. The effects of three main parameters, i...
March 23, 2017: Waste Management
https://www.readbyqxmd.com/read/28343729/the-ambiguities-of-performance-based-governance-reforms-in-italy-reviving-the-fortunes-of-evaluation-and-performance-measurement
#15
Mita Marra
Over the past two decades, Italy's administrative reforms have institutionalized evaluation to improve program effectiveness, staff productivity, and results-driven accountability against waste and corruption. Across ministries, regional governments, universities, schools and environmental protection agencies, seemingly unexpected consequences have emerged out of the implementation of performance measurement and evaluation regimes within public organizations. Formal compliance to legally binding evaluation procedures, judicially-sanctioned managerial accountability and lack of cross-agency coordination coupled with long-standing cultural separations among evaluators are some of the ambiguities associated with a performance-based governance system within Italian public administration...
February 6, 2017: Evaluation and Program Planning
https://www.readbyqxmd.com/read/28343715/occurrence-profiles-and-toxic-equivalents-of-chlorinated-and-brominated-polycyclic-aromatic-hydrocarbons-in-e-waste-open-burning-soils
#16
Chiya Nishimura, Yuichi Horii, Shuhei Tanaka, Kwadwo Ansong Asante, Florencio Ballesteros, Pham Hung Viet, Takaaki Itai, Hidetaka Takigami, Shinsuke Tanabe, Takashi Fujimori
We conducted this study to assess the occurrence, profiles, and toxicity of chlorinated polycyclic aromatic hydrocarbons (Cl-PAHs) and brominated polycyclic aromatic hydrocarbons (Br-PAHs) in e-waste open burning soils (EOBS). In this study, concentrations of 15 PAHs, 26 Cl-PAHs and 14 Br-PAHs were analyzed in EOBS samples. We found that e-waste open burning is an important emission source of Cl-PAHs and Br-PAHs as well as PAHs. Concentrations of total Cl-PAHs and Br-PAHs in e-waste open burning soil samples ranged from 21 to 2800 ng/g and from 5...
March 23, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28342756/photocatalytic-and-antimicrobial-activities-of-chitosan-tio2-nanocomposite
#17
K T Karthikeyan, A Nithya, K Jothivenkatachalam
Chitosan, a natural polysaccharide widely used for various biological applications due to their potential benefits. Incorporation of biomaterials with semiconductor has been exploited for waste water treatment and biological applications due to their nanometric sizes and biocompatibility of chitosan. Chitosan-Titanium dioxide (CS-TiO2) nanocomposite was synthesized and their optical, structural, spectral, thermal, morphological and elemental analyses were carried out by several techniques. The particle size of the synthesized CS-TiO2 nanocomposite was around 90nm and has a crystalline structure with anatase phase of TiO2...
March 22, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28342590/a-life-cycle-assessment-of-distributed-energy-production-from-organic-waste-two-case-studies-in-europe
#18
Sara Evangelisti, Roland Clift, Carla Tagliaferri, Paola Lettieri
By means of the life cycle assessment methodology, the purpose of this study is to assess the environmental impact when biomethane from organic waste produced at residential level is used to supply energy to a group of dwellings in the distributed generation paradigm. Three different Combined Heat and Power systems, such as fuel cells, Stirling engine and micro gas turbine, installed at household level are assessed in two different settings: one in Northern Europe (UK) and one in Southern Europe (Italy). Different operating strategies are investigated for each technology...
March 22, 2017: Waste Management
https://www.readbyqxmd.com/read/28342340/cellulose-decomposition-and-larval-biomass-production-from-the-co-digestion-of-dairy-manure-and-chicken-manure-by-mini-livestock-hermetia-illucens-l
#19
Kashif Ur Rehman, Minmin Cai, Xiaopeng Xiao, Longyu Zheng, Hui Wang, Abdul Aziz Soomro, Yusha Zhou, Wu Li, Ziniu Yu, Jibin Zhang
World trends toward the modern dairies intensification on large production units cause massive animal manure production and accumulation. Improper handling of manure produced by industrial farm operation greatly deteriorates the major environmental media including air, water and soil. The black soldier fly utilizes organic waste and converts it into larvae biomass to be used as livestock feed and into residues to be used as bio-fertilizer. However, due to the high ratio of cellulose, hemicellulose and lignin in dairy manure, this conversion is difficult...
March 22, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28342159/genetic-aspects-of-feed-efficiency-and-reduction-of-environmental-footprint-in-broilers-a-review
#20
REVIEW
Ewa Sell-Kubiak, Klaus Wimmers, Henry Reyer, Tomasz Szwaczkowski
Currently, optimization of feed efficiency is one of the main challenges in improvement programs of livestock and poultry genetics. The objective of this review is to present the genetic aspects of feed efficiency related traits in meat-type chicken and possible ways to reduce the environmental impact of poultry meat production with effective breeding. Basic measures of feed efficiency are defined and the genetic background of these traits, including a review of heritabilities is described. Moreover, a number of genomic regions and candidate genes determining feed efficiency traits of broilers that were detected over the past decades are described...
March 24, 2017: Journal of Applied Genetics
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