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https://www.readbyqxmd.com/read/27936518/computational-investigation-of-proton-transfer-pka-shifts-and-ph-optimum-of-protein-dna-and-protein-rna-complexes
#1
Yunhui Peng, Emil Alexov
Protein-nucleic acid interactions play a crucial role in many biological processes. This work investigates the changes of pKa values and protonation states of ionizable groups (including nucleic acid bases) that may occur at protein-nucleic acid binding. Taking advantage of the recently developed pKa calculation tool DelphiPka, we utilize the large protein-nucleic acid interaction database (NPIDB database) to model pKa shifts caused by binding. It has been found that the protein's interfacial basic residues experience favorable electrostatic interactions while the protein acidic residues undergo proton uptake to reduce the energy cost upon the binding...
December 9, 2016: Proteins
https://www.readbyqxmd.com/read/27936432/the-role-of-the-water-tankers-market-in-water-stressed-semi-arid-urban-areas-implications-on-water-quality-and-economic-burden
#2
Kinda Constantine, May Massoud, Ibrahim Alameddine, Mutasem El-Fadel
Population growth and development are associated with increased water demand that often exceeds the capacity of existing resources, resulting in water shortages, particularly in urban areas, where more than 60% of the world's population resides. In many developing communities, shortages often force households to depend on water tankers amongst other potential sources for the delivery of water for domestic and/or potable use. While water tankers have become an integral part of the water supply system in many countries, the sector is often unregulated and operates with little governmental supervision...
December 6, 2016: Journal of Environmental Management
https://www.readbyqxmd.com/read/27936400/wicking-of-light-hydrophobic-liquid-phase-from-water-by-pulverized-rubber-theoretical-and-experimental-analyses
#3
Daria Boglaienko, Berrin Tansel
Pulverized rubber (PR) can be utilized for capturing floating oils to prevent spreading and volatilization of hydrocarbons. Experiments were conducted using PR with four different particle sizes (ranging from 0.075 to 0.600mm) and South Louisiana crude oil. The oil capture performance of the PR particles was compared with that of powdered activated carbon (AC). Oil-particle interactions were analyzed using capillary theories for lateral aggregation and wicking processes, as well as sorption capacity in relation to particle size...
November 30, 2016: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/27936388/nanoliposome-encapsulated-anesthetics-for-local-anesthesia-application
#4
REVIEW
Sepideh Vahabi, Ali Eatemadi
The systemic administration of opioids leads to potentially severe and undesirable and side effects like sedation and drowsiness, vomiting and nausea, allergies, respiratory depression, and neutrophil dysfunction. The application of nanotechnology in medical field has drawn a great attention in recent times. Several treatments available are tedious and expensive. Application of nanotechnology brings about faster cure and cost effectiveness. Nanoliposomes are one of the widely used names for nanoparticles used in medicine...
December 6, 2016: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/27936332/an-association-of-serum-alt-with-elevated-blood-pressure-in-senior-adults-a-case-control-study
#5
Xiuqin Hong, Nualnong Wongtongkam, Paul Russell Ward, Shuiyuan Xiao, Shuling Wang, Qian Peng, Qi Zuo, Dan Zeng, Jia Wang, Chenxu Wang, Jian Chen, Na Zhang
Hypertension is a major risk factor for cardiovascular diseases in China; hence, identifying good serum markers might provide cost benefits in terms of reducing morbidity rates. In this population-based case-control study, participants were recruited from five districts in Hunan province, and 416 cases were matched with an equal number of controls. Markers related to elevated blood pressure were assessed: Body Mass Index, total cholesterol, triglycerides, fasting blood glucose, and creatinine. Three potential serum markers homocysteine (HCY), C-reactive protein (CRP), and alanine aminotransferase (ALT) were dichotomized as normal or high level...
December 9, 2016: Clinical and Experimental Hypertension: CHE
https://www.readbyqxmd.com/read/27936326/piezoelectric-and-triboelectric-dual-effects-in-mechanical-energy-harvesting-using-batio3-polydimethylsiloxane-composite-film
#6
Guoquan Suo, Yanhao Yu, Zhiyi Zhang, Shifa Wang, Ping Zhao, Jianye Li, Xudong Wang
Piezoelectric and triboelectric nanogenerators have been developed as rising energy-harvesting devices in the past few years to effectively convert mechanical energy into electricity. Here, a novel hybrid piezo/triboelectric nanogenerator based on BaTiO3 NP/PDMS composite film was developed in a simple and low-cost way. The effects of the BTO content and polarization degree on the output performance were systematically studied. The device with 20 wt % BTO in PDMS and a 100-μm-thick film showed the highest output power...
December 9, 2016: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/27936240/composting-like-conditions-are-more-efficient-for-enrichment-and-diversity-of-organisms-containing-cellulase-encoding-genes-than-submerged-cultures
#7
Senta Heiss-Blanquet, Françoise Fayolle-Guichard, Vincent Lombard, Agnès Hébert, Pedro M Coutinho, Alexis Groppi, Aurélien Barre, Bernard Henrissat
Cost-effective biofuel production from lignocellulosic biomass depends on efficient degradation of the plant cell wall. One of the major obstacles for the development of a cost-efficient process is the lack of resistance of currently used fungal enzymes to harsh conditions such as high temperature. Adapted, thermophilic microbial communities provide a huge reservoir of potentially interesting lignocellulose-degrading enzymes for improvement of the cellulose hydrolysis step. In order to identify such enzymes, a leaf and wood chip compost was enriched on a mixture of thermo-chemically pretreated wheat straw, poplar and Miscanthus under thermophile conditions, but in two different set-ups...
2016: PloS One
https://www.readbyqxmd.com/read/27936210/genetic-analysis-and-qtl-mapping-of-fruit-peduncle-length-in-cucumber-cucumis-sativus-l
#8
Zi-Chao Song, Han Miao, Song Zhang, Ye Wang, Sheng-Ping Zhang, Xing-Fang Gu
Mechanized harvesting of cucumbers offers significant advantages compared to manual labor as both shortages and costs of labor increase. However the efficient use of machines depends on breeding plants with longer peduncles, but the genetic and molecular basis of fruit peduncle development in cucumber is not well understood. In this study, F2 populations were developed from a cross between two inbred lines, 1101 with a long peduncle and 1694 with a short peduncle. These were grown at two field sites, Hainan, with a tropical marine climate, in December 2014, and Beijing, with a warm temperate climate, in May 2015...
2016: PloS One
https://www.readbyqxmd.com/read/27936155/variation-in-plant-response-to-herbivory-underscored-by-functional-traits
#9
Aspen T Reese, Gregory M Ames, Justin P Wright
The effects of herbivory can shape plant communities and evolution. However, the many forms of herbivory costs and the wide variation in herbivory pressure, including across latitudinal gradients, can make predicting the effects of herbivory on different plant species difficult. Functional trait approaches may aid in contextualizing and standardizing the assessment of herbivory impacts. Here we assessed the response of 26 old-field plant species to simulated defoliation in a greenhouse setting by measuring whole plant and leaf level traits in control and treated individuals...
2016: PloS One
https://www.readbyqxmd.com/read/27936136/improving-the-non-hydrostatic-numerical-dust-model-by-integrating-soil-moisture-and-greenness-vegetation-fraction-data-with-different-spatiotemporal-resolutions
#10
Manzhu Yu, Chaowei Yang
Dust storms are devastating natural disasters that cost billions of dollars and many human lives every year. Using the Non-Hydrostatic Mesoscale Dust Model (NMM-dust), this research studies how different spatiotemporal resolutions of two input parameters (soil moisture and greenness vegetation fraction) impact the sensitivity and accuracy of a dust model. Experiments are conducted by simulating dust concentration during July 1-7, 2014, for the target area covering part of Arizona and California (31, 37, -118, -112), with a resolution of ~ 3 km...
2016: PloS One
https://www.readbyqxmd.com/read/27936112/genome-wide-association-of-heroin-dependence-in-han-chinese
#11
Gursharan Kalsi, Jack Euesden, Jonathan R I Coleman, Francesca Ducci, Fazil Aliev, Stephen J Newhouse, Xiehe Liu, Xiaohong Ma, Yingcheng Wang, David A Collier, Philip Asherson, Tao Li, Gerome Breen
Drug addiction is a costly and recurring healthcare problem, necessitating a need to understand risk factors and mechanisms of addiction, and to identify new biomarkers. To date, genome-wide association studies (GWAS) for heroin addiction have been limited; moreover they have been restricted to examining samples of European and African-American origin due to difficulty of recruiting samples from other populations. This is the first study to test a Han Chinese population; we performed a GWAS on a homogeneous sample of 370 Han Chinese subjects diagnosed with heroin dependence using the DSM-IV criteria and 134 ethnically matched controls...
2016: PloS One
https://www.readbyqxmd.com/read/27936083/effectiveness-and-cost-effectiveness-of-a-cluster-randomized-prenatal-lifestyle-counseling-trial-a-seven-year-follow-up
#12
Päivi Kolu, Jani Raitanen, Jatta Puhkala, Pipsa Tuominen, Pauliina Husu, Riitta Luoto
There is a link between the pregnancy and its long-term influence on health and susceptibility to future chronic disease both in mother and offspring. The objective was to determine whether individual counseling on physical activity and diet and weight gain at five antenatal visits can prevent type 2 diabetes mellitus (T2DM) and overweight or improve glycemic parameters, among all at-risk-mothers and their children. Another objective was to evaluate whether gestational lifestyle intervention was cost-effective as measured with mother's sickness absence and quality-adjusted life years (QALY)...
2016: PloS One
https://www.readbyqxmd.com/read/27936053/predicting-30-day-readmissions-in-an-asian-population-building-a-predictive-model-by-incorporating-markers-of-hospitalization-severity
#13
Lian Leng Low, Nan Liu, Sijia Wang, Julian Thumboo, Marcus Eng Hock Ong, Kheng Hock Lee
BACKGROUND: To reduce readmissions, it may be cost-effective to consider risk stratification, with targeting intervention programs to patients at high risk of readmissions. In this study, we aimed to derive and validate a prediction model including several novel markers of hospitalization severity, and compare the model with the LACE index (Length of stay, Acuity of admission, Charlson comorbidity index, Emergency department visits in past 6 months), an established risk stratification tool...
2016: PloS One
https://www.readbyqxmd.com/read/27936045/field-crickets-compensate-for-unattractive-static-long-distance-call-components-by-increasing-dynamic-signalling-effort
#14
Emily M McAuley, Susan M Bertram
The evolution of multiple sexual signals presents a dilemma since individuals selecting a mate should pay attention to the most honest signal and ignore the rest; however, multiple signals may evolve if, together, they provide more information to the receiver than either one would alone. Static and dynamic signals, for instance, can act as multiple messages, providing information on different aspects of signaller quality that reflect condition at different time scales. While the nature of static signals makes them difficult or impossible for individuals to augment, dynamic signals are much more susceptible to temporary fluctuations in effort...
2016: PloS One
https://www.readbyqxmd.com/read/27936028/cost-effectiveness-of-screening-colonoscopy-depends-on-adequate-bowel-preparation-rates-a-modeling-study
#15
James Kingsley, Siddharth Karanth, Frances Lee Revere, Deepak Agrawal
BACKGROUND: Inadequate bowel preparation during screening colonoscopy necessitates repeating colonoscopy. Studies suggest inadequate bowel preparation rates of 20-60%. This increases the cost of colonoscopy for our society. AIM: The aim of this study is to determine the impact of inadequate bowel preparation rate on the cost effectiveness of colonoscopy compared to other screening strategies for colorectal cancer (CRC). METHODS: A microsimulation model of CRC screening strategies for the general population at average risk for CRC...
2016: PloS One
https://www.readbyqxmd.com/read/27936022/cognitive-costs-of-reappraisal-depend-on-both-emotional-stimulus-intensity-and-individual-differences-in-habitual-reappraisal
#16
Catherine Nicole Marie Ortner, Mark Ste Marie, Daniela Corno
Recent models of emotion regulation suggest that the cognitive costs of reappraisal depend on stimulus intensity and habitual reappraisal. In the current experiment, we tested these hypotheses by manipulating the intensity of unpleasant and pleasant images, which participants reappraised, viewed, or suppressed their emotions to. To assess cognitive costs, we measured participants' performance on a concurrent simple reaction time task. Participants also reported on their everyday use of reappraisal and suppression...
2016: PloS One
https://www.readbyqxmd.com/read/27936006/prognostic-value-of-red-blood-cell-distribution-width-in-non-cardiovascular-critically-or-acutely-patients-a-systematic-review
#17
Rubin Luo, Jian Hu, Libing Jiang, Mao Zhang
BACKGROUND: RDW (red cell distribution width) has been reported to been associated with the prognosis of patients with cardiovascular diseases. However, RDW is often overlooked by clinicians in treating patients with non-cardiovascular diseases, especially in an emergency. The objective of this systematic review is to explore the prognostic value of RDW in non-cardiovascular emergencies. METHODS: PubMed, EMBASE, and the Cochrane Central Register of Controlled Trials were systematically searched from their inception to December 31, 2015...
2016: PloS One
https://www.readbyqxmd.com/read/27935982/a-cost-effective-method-to-assemble-biomimetic-3d-cell-culture-platforms
#18
Sabreen Khalil, Nagwa El-Badri, Mohamed El-Mokhtaar, Saif Al-Mofty, Mohamed Farghaly, Radwa Ayman, Dina Habib, Noha Mousa
METHODS: We utilized the hAM to provide the biological and the three dimensional (3D) topographic components of the prototype. The 3D nano-roughness of the hAM was characterized using surface electron microscopy and surface image analysis (ImageJ and SurfaceJ). We developed additional macro-scale and micro-scale versions of the platform which provided additional shear stress factors to simulate the fluid dynamics of the in vivo extracellular fluids. RESULTS: Three models of varying complexities of the prototype were assembled...
2016: PloS One
https://www.readbyqxmd.com/read/27935977/the-effects-of-a-community-based-sodium-reduction-program-in-rural-china-a-cluster-randomized-trial
#19
Nicole Li, Lijing L Yan, Wenyi Niu, Chen Yao, Xiangxian Feng, Jianxin Zhang, Jingpu Shi, Yuhong Zhang, Ruijuan Zhang, Zhixin Hao, Hongling Chu, Jing Zhang, Xian Li, Jianhong Pan, Zhifang Li, Jixin Sun, Bo Zhou, Yi Zhao, Yan Yu, Michael Engelgau, Darwin Labarthe, Jixiang Ma, Stephen MacMahon, Paul Elliott, Yangfeng Wu, Bruce Neal
BACKGROUND: Average sodium intake and stroke mortality in northern China are both among the highest in the world. An effective, low-cost strategy to reduce sodium intake in this population is urgently needed. OBJECTIVE: We sought to determine the effects of a community-based sodium reduction program on salt consumption in rural northern China. DESIGN: This study was a cluster-randomized trial done over 18 months in 120 townships (one village from each township) from five provinces...
2016: PloS One
https://www.readbyqxmd.com/read/27935971/costs-of-care-of-hiv-infected-children-initiating-lopinavir-ritonavir-based-antiretroviral-therapy-before-the-age-of-two-in-cote-d-ivoire
#20
Sophie Desmonde, Divine Avit, Junie Petit, Madeleine Amorissani Folquet, Francois Tanoh Eboua, Clarisse Amani Bosse, Evelyne Dainguy, Véronique Mea, Marguerite Timite-Konan, Sylvie Ngbeché, Andrea Ciaranello, Valeriane Leroy
OBJECTIVES: To access the costs of care for Ivoirian children before and after initiating LPV/r-based antiretroviral therapy (ART) before the age of two. METHODS: We assessed the direct costs of care for all HIV-infected children over the first 12 months on LPV/r-based ART initiated <2 years of age in Abidjan. We recorded all drug prescriptions, ART and cotrimoxazole prophylaxis delivery, medical analyses/examinations and hospital admissions. We compared these costs to those accrued in the month prior to ART initiation...
2016: PloS One
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