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https://www.readbyqxmd.com/read/28551856/model-based-intensification-of-a-fed-batch-microbial-process-for-the-maximization-of-polyhydroxybutyrate-phb-production-rate
#1
Giannis Penloglou, Athina Vasileiadou, Christos Chatzidoukas, Costas Kiparissides
An integrated metabolic-polymerization-macroscopic model, describing the microbial production of polyhydroxybutyrate (PHB) in Azohydromonas lata bacteria, was developed and validated using a comprehensive series of experimental measurements. The model accounted for biomass growth, biopolymer accumulation, carbon and nitrogen sources utilization, oxygen mass transfer and uptake rates and average molecular weights of the accumulated PHB, produced under batch and fed-batch cultivation conditions. Model predictions were in excellent agreement with experimental measurements...
May 27, 2017: Bioprocess and Biosystems Engineering
https://www.readbyqxmd.com/read/28551771/synergistic-effects-of-chuanxiong-chishao-herb-pair-on-promoting-angiogenesis-at-network-pharmacological-and-pharmacodynamic-levels
#2
Yan Wang, Gang Guo, Bin-Rui Yang, Qi-Qi Xin, Qi-Wen Liao, Simon Ming-Yuen Lee, Yuan-Jia Hu, Ke-Ji Chen, Wei-Hong Cong
OBJECTIVE: To investigate the synergistic effects of Chuanxiong-Chishao herb-pair (CCHP) on promoting angiogenesis in silico and in vivo. METHODS: The mechanisms of action of an herb-pair, Chuanxiong- Chishao, were investigated using the network pharmacological and pharmacodynamic strategies involving computational drug target prediction and network analysis, and experimental validation. A set of network pharmacology methods were created to study the herbs in the context of targets and diseases networks, including prediction of target profiles and pharmacological actions of main active compounds in Chuanxiong and Chishao...
May 27, 2017: Chinese Journal of Integrative Medicine
https://www.readbyqxmd.com/read/28551711/why-are-most-phospholipidosis-inducers-also-herg-blockers
#3
Svetoslav Slavov, Iva Stoyanova-Slavova, Shuaizhang Li, Jinghua Zhao, Ruili Huang, Menghang Xia, Richard Beger
Recent reports have noted that a number of compounds that block the human Ether-à-go-go related gene (hERG) ion channel also induce phospholipidosis (PLD). To explore a hypothesis explaining why most PLD inducers are also hERG inhibitors, a modeling approach was undertaken with data sets comprised of 4096 compounds assayed for hERG inhibition and 5490 compounds assayed for PLD induction. To eliminate the chemical domain effect, a filtered data set of 567 compounds tested in quantitative high-throughput screening (qHTS) format for both hERG inhibition and PLD induction was constructed...
May 27, 2017: Archives of Toxicology
https://www.readbyqxmd.com/read/28551577/bioactive-growth-hormone-in-older-men-and-women-it-s-relationship-to-immune-markers-and-healthspan
#4
William J Kraemer, Mary J Kennett, Andrea M Mastro, Roger J McCarter, Connie J Rogers, William H DuPont, Shawn D Flanagan, William J Turbitt, Maren S Fragala, Emily M Post, Wesley C Hymer
OBJECTIVE: The consequences of age-related decline in the somatotropic axis of humans are complex and remain largely unresolved. We tested the hypothesis that hGH measurements of plasma by bioassay vs immunoassay from samples obtained from free-living, elderly individuals would reveal a dichotomy in GH activities that are correlated with the functional status of the donors, i.e. their healthspan. DESIGN: Forty-one men and women of advanced age (men: N=16, age, 80...
May 8, 2017: Growth Hormone & IGF Research
https://www.readbyqxmd.com/read/28551524/capillary-flows-across-layers-and-textural-interfaces-pathways-and-colloid-transport-considerations-in-unsaturated-layered-porous-media
#5
Frouke Hoogland, Peter Lehmann, Dani Or
Soils and other geologic porous media often display layering and associated textural contrasts that may alter unsaturated flow and transport pathways. Such natural interfaces are usually represented empirically in continuum flow models with limited mechanistic account of the effect of adjusted pathways across layers on colloid transport and on the nature of unsaturated flow. In this study we present the soil foam drainage equation (SFDE) as alternative framework to simulate unsaturated flow in layered porous media...
May 10, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28551431/research-on-pyrolysis-behavior-of-camellia-sinensis-branches-via-the-discrete-distributed-activation-energy-model
#6
Bingliang Zhou, Jianbin Zhou, Qisheng Zhang
This study aims at investigating the pyrolysis behavior of Camellia sinensis branches by the Discrete Distributed Activation Energy Model (DAEM) and thermogravimetric experiments. Then the Discrete DAEM method is used to describe pyrolysis process of Camellia sinensis branches dominated by 12 characterized reactions. The decomposition mechanism of Camellia sinensis branches and interaction with components are observed. And the reaction at 350.77°C is a significant boundary of the first and second reaction range...
May 18, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28551391/preoperative-vs-postoperative-radiation-therapy-in-localized-soft-tissue-sarcoma-nationwide-patterns-of-care-and-trends-in-utilization
#7
Stanislav Lazarev, Heather McGee, Erin Moshier, Meng Ru, Elizabeth G Demicco, Vishal Gupta
PURPOSE: The timing of perioperative radiation therapy (RT) in the treatment of soft tissue sarcoma (STS) varies among institutions. This study examines patterns of care, trends in utilization, and survival with preoperative versus postoperative RT for primary STS. METHODS AND MATERIALS: Using the National Cancer Data Base, we identified patients with stage I-III STS who underwent definitive surgery with either preoperative or postoperative RT between 2004 and 2012...
April 18, 2017: Practical Radiation Oncology
https://www.readbyqxmd.com/read/28551325/predictors-of-overall-and-recurrence-free-survival-after-neoadjuvant-chemotherapy-for-gastroesophageal-adenocarcinoma-pooled-analysis-of-individual-patient-data-ipd-from-randomized-controlled-trials-rcts
#8
U Ronellenfitsch, M Schwarzbach, R Hofheinz, P Kienle, K Nowak, M Kieser, T E Slanger, B Burmeister, D Kelsen, D Niedzwiecki, C Schuhmacher, S Urba, C van de Velde, T N Walsh, M Ychou, K Jensen
BACKGROUND: Neoadjuvant chemotherapy improves prognosis of patients with locally advanced gastroesophageal adenocarcinoma. The aim of this study was to identify predictors for postoperative survival following neoadjuvant therapy. These could be useful in deciding about postoperative continuation of chemotherapy. METHODS: This meta-analysis used IPD from RCTs comparing neoadjuvant chemotherapy with surgery alone for gastroesophageal adenocarcinoma. Trials providing IPD on age, sex, performance status, pT/N stage, resection status, overall and recurrence-free survival were included...
May 18, 2017: European Journal of Surgical Oncology
https://www.readbyqxmd.com/read/28551316/impacts-of-3d-bone-to-implant-contact-and-implant-diameter-on-primary-stability-of-dental-implant
#9
Jui-Ting Hsu, Yen-Wen Shen, Chih-Wei Kuo, Ruei-Teng Wang, Lih-Jyh Fuh, Heng-Li Huang
BACKGROUND/PURPOSE: This study investigated the effects of three three-dimensional (3D) bone-to-implant contact (BIC) parameters-potential BIC area (pBICA), BIC area (BICA), and 3D BIC percentage (3D BIC%; defined as BICA divided by pBICA)-in relation to the implant diameter on primary implant stability, as well as their correlations were also evaluated. METHODS: Dental implants with diameters of 3.75, 4, 5, and 6 mm and artificial bone specimens were scanned by microcomputed tomography to construct 3D models for calculating pBICA, BICA, and 3D BIC%...
May 24, 2017: Journal of the Formosan Medical Association, Taiwan Yi Zhi
https://www.readbyqxmd.com/read/28551312/locally-advanced-cervical-cancer-is-it-relevant-to-report-image-guided-adaptive-brachytherapy-using-point-a-dose
#10
Renaud Mazeron, Sebastien Gouy, Alexandre Escande, Isabelle Dumas, Eleonor Rivin Del Campo, Enrica Bentivegna, Warren Bocorro, Dimitri Lefkopoulos, Eric Deutsch, Philippe Morice, Christine Haie-Meder, Cyrus Chargari
PURPOSE: To evaluate the usefulness of reporting the point A dose in patients with locally advanced cervical cancer treated with image-guided adaptive brachytherapy (IGABT). METHODS AND MATERIALS: Dosimetric data from patients treated with a combination of chemoradiation and intracavitary IGABT were examined in light of their outcomes. Prescribing followed the Groupe Européen de Curiethérapie-European Society for Radiation Oncology recommendations. All doses were converted in 2-Gy equivalent...
May 24, 2017: Brachytherapy
https://www.readbyqxmd.com/read/28551181/use-of-milk-fatty-acids-to-estimate-plasma-nonesterified-fatty-acid-concentrations-as-an-indicator-of-animal-energy-balance
#11
J R R Dórea, E A French, L E Armentano
Negative energy balance is an important part of the lactation cycle, and measuring the current energy balance of a cow is useful in both applied and research settings. The objectives of this study were (1) to determine if milk fatty acid (FA) proportions were consistently related to plasma nonesterified fatty acids (NEFA); (2) to determine if an individual cow with a measured milk FA profile is above or below a NEFA concentration, (3) to test the universality of the models developed within the University of Wisconsin and US Dairy Forage Research Center cows...
May 24, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28551178/antioxidant-status-and-gut-microbiota-change-in-an-aging-mouse-model-as-influenced-by-exopolysaccharide-produced-by-lactobacillus-plantarum-yw11-isolated-from-tibetan-kefir
#12
Jian Zhang, Xiao Zhao, Yunyun Jiang, Wen Zhao, Ting Guo, Yongqiang Cao, Junwei Teng, Xiaona Hao, Juan Zhao, Zhennai Yang
This study investigated the effect of exopolysaccharide (EPS) produced by Lactobacillus plantarum YW11 on the oxidative status and gut microbiota in an aging mouse model induced with d-galactose. The in vitro assay of the antioxidant activity of the EPS showed concentration-dependent (0.25-3.0 mg/mL) activities. At 3.0 mg/mL, the EPS reached the highest scavenging activities with half maximal inhibitory concentration values against hydroxyl radicals at 75.10% and 1.22 mg/mL, superoxide anion at 62.71% and 1...
May 24, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28551149/advanced-predictive-methods-for-wine-age-prediction-part-i-a-comparison-study-of-single-block-regression-approaches-based-on-variable-selection-penalized-regression-latent-variables-and-tree-based-ensemble-methods
#13
Ricardo Rendall, Ana Cristina Pereira, Marco S Reis
In this paper we test and compare advanced predictive approaches for estimating wine age in the context of the production of a high quality fortified wine - Madeira Wine. We consider four different data sets, namely, volatile, polyphenols, organic acids and the UV-vis spectra. Each one of these data sets contain chemical information of a different nature and present diverse data structures, namely a different dimensionality, level of collinearity and degree of sparsity. These different aspects may imply the use of different modelling approaches in order to better explore the data set's information content, namely their predictive potential for wine age...
August 15, 2017: Talanta
https://www.readbyqxmd.com/read/28551097/how-to-best-support-sit-to-stand-transfers-of-geriatric-patients-motion-optimization-under-external-forces-for-the-design-of-physical-assistive-devices
#14
Katja Mombaur, Khai-Long Ho Hoang
Sit to stand (STS) transfers form a challenging type of motion, in particular for geriatric patients. Physical assistive devices that are built to enhance the mobility of this class of patients therefore must especially be able to support STS transfers. This paper presents a method to predict geriatric STS movements and compute the best possible actions by external devices to support these movements. We treat three types of active devices that act on different parts of the patient's body and provide different levels of support...
May 17, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/28551054/the-effect-of-anatomic-location-of-injury-on-mortality-risk-in-a-resource-poor-setting
#15
Jessica Eaton, Joanna Grudziak, Asma Bilal Hanif, Wanangwa C Chisenga, Eldad Hadar, Anthony Charles
INTRODUCTION: Injury is a significant cause of death, with approximately 4.7 million people mortalities each year. By 2030, injury is predicted to be among the top 20 causes of death worldwide. We sought to characterize and compare the mortality probability in trauma patients in a resource-poor setting based on anatomic location of injury. METHODS: We performed a retrospective analysis of prospectively collected data using the trauma database at Kamuzu Central Hospital (KCH) in Lilongwe, Malawi...
May 18, 2017: Injury
https://www.readbyqxmd.com/read/28551003/ensemble-risk-model-of-emergency-admissions-ermer
#16
Mohsen Mesgarpour, Thierry Chaussalet, Salma Chahed
INTRODUCTION: About half of hospital readmissions can be avoided with preventive interventions. Developing decision support tools for identification of patients' emergency readmission risk is an important area of research. Because, it remains unclear how to design features and develop predictive models that can adjust continuously to a fast-changing healthcare system and population characteristics. The objective of this study was to develop a generic ensemble Bayesian risk model of emergency readmission...
July 2017: International Journal of Medical Informatics
https://www.readbyqxmd.com/read/28550920/neural-network-prediction-of-severe-lower-intestinal-bleeding-and-the-need-for-surgical-intervention
#17
Tyler J Loftus, Scott C Brakenridge, Chasen A Croft, Robert Stephen Smith, Philip A Efron, Frederick A Moore, Alicia M Mohr, Janeen R Jordan
BACKGROUND: The prognosis for patients with severe acute lower intestinal bleeding (ALIB) may be assessed by complex artificial neural networks (ANNs) or user-friendly regression-based models. Comparisons between these modalities are limited, and predicting the need for surgical intervention remains elusive. We hypothesized that ANNs would outperform the Strate rule to predict severe bleeding and would also predict the need for surgical intervention. METHODS: We performed a 4-y retrospective analysis of 147 adult patients who underwent endoscopy, angiography, or surgery for ALIB...
May 15, 2017: Journal of Surgical Research
https://www.readbyqxmd.com/read/28550798/sediment-quality-in-a-metal-contaminated-tropical-bay-assessed-with-a-multiple-lines-of-evidence-approach
#18
Sarah K Rodrigues, Denis M S Abessa, Ana Paula de C Rodrigues, Abílio Soares-Gomes, Carolina B Freitas, Ricardo E Santelli, Aline S Freire, Wilson Machado
A sediment quality assessment was performed near to the main industrial source of metal contamination in Sepetiba Bay, Brazil, which represents one of the worst cases of trace metal contamination reported for coastal areas. Acute and chronic toxicity tests, benthic fauna community analysis and metal bioavailability evaluations were applied to identify risks to the benthic community. Significant amphipod mortality was observed close to the major pollution source and lower copepod fertility was observed for all stations...
May 24, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28550762/forensic-age-estimation-by-morphometric-analysis-of-the-manubrium-from-3d-mr-images
#19
Naira P Martínez Vera, Johannes Höller, Thomas Widek, Bernhard Neumayer, Thomas Ehammer, Martin Urschler
Forensic age estimation research based on skeletal structures focuses on patterns of growth and development using different bones. In this work, our aim was to study growth-related evolution of the manubrium in living adolescents and young adults using magnetic resonance imaging (MRI), which is an image acquisition modality that does not involve ionizing radiation. In a first step, individual manubrium and subject features were correlated with age, which confirmed a statistically significant change of manubrium volume (Mvol:p<0...
May 12, 2017: Forensic Science International
https://www.readbyqxmd.com/read/28550738/development-an-efficient-calibrated-nonlocal-plate-model-for-nonlinear-axial-instability-of-zirconia-nanosheets-using-molecular-dynamics-simulation
#20
S Sahmani, A M Fattahi
New ceramic materials containing nanoscaled crystalline phases create a main object of scientific interest due to their attractive advantages such as biocompatibility. Zirconia as a transparent glass ceramic is one of the most useful binary oxides in a wide range of applications. In the present study, a new size-dependent plate model is constructed to predict the nonlinear axial instability characteristics of zirconia nanosheets under axial compressive load. To accomplish this end, the nonlocal continuum elasticity of Eringen is incorporated to a refined exponential shear deformation plate theory...
April 27, 2017: Journal of Molecular Graphics & Modelling
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