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https://www.readbyqxmd.com/read/28231419/absolute-photoionization-cross-sections-of-two-cyclic-ketones-cyclopentanone-cyclohexanone
#1
Chelsea Price, Yasmin Fathi, Giovanni Meloni
Absolute photoionization cross sections for cyclopentanone and cyclohexanone, as well as partial ionization cross sections for the dissociative ionized fragments, are presented in this investigation. Experiments are performed via a multiplexed photoionization mass spectrometer utilizing VUV synchrotron radiation supplied by the Advanced Light Source of Lawrence Berkeley National Laboratory. These results allow the quantification of these species that is relevant to investigate the kinetics and combustion reactions of potential biofuels...
February 23, 2017: Journal of Mass Spectrometry: JMS
https://www.readbyqxmd.com/read/28231177/the-goal-of-adequate-nutrition-can-it-be-made-affordable-sustainable-and-universal
#2
REVIEW
Ian McFarlane
Until about 1900, large proportions of the world population endured hunger and poverty. The 20th century saw world population increase from 1.6 to 6.1 billion, accompanied and to some extent made possible by rapid improvements in health standards and food supply, with associated advances in agricultural and nutrition sciences. In this paper, I use the application of linear programming (LP) in preparation of rations for farm animals to illustrate a method of calculating the lowest cost of a human diet selected from locally available food items, constrained to provide recommended levels of food energy and nutrients; then, to find a realistic minimum cost, I apply the further constraint that the main sources of food energy in the costed diet are weighted in proportion to the actual reported consumption of food items in that area...
November 30, 2016: Foods (Basel, Switzerland)
https://www.readbyqxmd.com/read/28230893/the-effect-of-body-mass-on-outdoor-adult-human-decomposition
#3
Lindsey G Roberts, Jessica R Spencer, Gretchen R Dabbs
Forensic taphonomy explores factors impacting human decomposition. This study investigated the effect of body mass on the rate and pattern of adult human decomposition. Nine males and three females aged 49-95 years ranging in mass from 73 to 159 kg who were donated to the Complex for Forensic Anthropology Research between December 2012 and September 2015 were included in this study. Kelvin accumulated degree days (KADD) were used to assess the thermal energy required for subjects to reach several total body score (TBS) thresholds: early decomposition (TBS ≥6...
February 23, 2017: Journal of Forensic Sciences
https://www.readbyqxmd.com/read/28230703/omics-and-cachexia
#4
Brigitte Twelkmeyer, Nicolas Tardif, Olav Rooyackers
PURPOSE OF REVIEW: The purpose of this review is to recapture recent advances in cachexia-related diseases, mainly cancer cachexia, and treatment using genomic, transcriptomics, proteomic, and metabolomics-related techniques. RECENT FINDINGS: From recent studies in the cancer cachexia field it is clear that the tumor has a direct effect on distant organs via its secretome. The affected pathways on the other hand were largely known from earlier studies with changes in energy-related pathways (mainly lipid metabolism) and the protein degradation pathways...
February 21, 2017: Current Opinion in Clinical Nutrition and Metabolic Care
https://www.readbyqxmd.com/read/28229155/sulfate-radical-oxidation-of-aromatic-contaminants-a-detailed-assessment-of-density-functional-theory-and-high-level-quantum-chemical-methods
#5
Sangavi Pari, Inger A Wang, Haizhou Liu, Bryan M Wong
Advanced oxidation processes that utilize highly oxidative radicals are widely used in water reuse treatment. In recent years, the application of sulfate radical (SO4˙(-)) as a promising oxidant for water treatment has gained increasing attention. To understand the efficiency of SO4˙(-) in the degradation of organic contaminants in wastewater effluent, it is important to be able to predict the reaction kinetics of various SO4˙(-)-driven oxidation reactions. In this study, we utilize density functional theory (DFT) and high-level wavefunction-based methods (including computationally-intensive coupled cluster methods), to explore the activation energies of SO4˙(-)-driven oxidation reactions on a series of benzene-derived contaminants...
February 23, 2017: Environmental Science. Processes & Impacts
https://www.readbyqxmd.com/read/28228938/physical-activity-levels-in-locally-advanced-rectal-cancer-patients-following-neoadjuvant-chemoradiotherapy-and-an-exercise-training-programme-before-surgery-a-pilot-study
#6
Lisa Loughney, Malcolm A West, Borislav D Dimitrov, Graham J Kemp, Michael Pw Grocott, Sandy Jack
BACKGROUND: The aim of this pilot study was to measure changes in physical activity level (PAL) variables, as well as sleep duration and efficiency in people with locally advanced rectal cancer (1) before and after neoadjuvant chemoradiotherapy (CRT) and (2) after participating in a pre-operative 6-week in-hospital exercise training programme, following neoadjuvant CRT prior to major surgery, compared to a usual care control group. METHODS: We prospectively studied 39 consecutive participants (27 males)...
2017: Perioperative Medicine
https://www.readbyqxmd.com/read/28228026/general-technique-for-analytical-derivatives-of-post-projected-hartree-fock
#7
Takashi Tsuchimochi, Seiichiro Ten-No
In electronic structure theory, the availability of an analytical derivative is one of the desired features for a method to be useful in practical applications, as it allows for geometry optimization as well as computation of molecular properties. With the recent advances in the development of symmetry-projected Hartree-Fock (PHF) methods, we here aim at further extensions by devising the analytic gradients of post-PHF approaches with a special focus on spin-extended (spin-projected) configuration interaction with single and double substitutions (ECISD)...
February 21, 2017: Journal of Chemical Physics
https://www.readbyqxmd.com/read/28227649/metabolic-cost-of-level-ground-walking-with-a-robotic-transtibial-prosthesis-combining-push-off-power-and-nonlinear-damping-behaviors-preliminary-results
#8
Yanggang Feng, Jinying Zhu, Qining Wang, Yanggang Feng, Jinying Zhu, Qining Wang, Jinying Zhu, Qining Wang, Yanggang Feng
Recent advances in robotic technology are facilitating the development of robotic prostheses. Our previous studies proposed a lightweight robotic transtibial prosthesis with a damping control strategy. To improve the performance of power assistance, in this paper, we redesign the prosthesis and improve the control strategy by supplying extra push-off power. A male transtibial amputee subject volunteered to participate in the study. Preliminary experimental results show that the proposed prosthesis with push-off control improves energy expenditure by a percentage ranged from 9...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226591/j-peak-extraction-from-non-standard-ballistocardiography-data-a-preliminary-study
#9
Xin Li, Ye Li, Xin Li, Ye Li, Ye Li, Xin Li
In recent years, several advanced algorithms based on clustering, multi-method or data fusion approaches have been proposed to estimate heartbeat intervals from non-standard ballistocardiography (BCG) data. These advanced algorithms generally have higher computational complexity than J-peak based algorithms. This fact motivated us to study the problem of extracting J peaks from non-standard BCG data, because if this extraction can be realized, then a low-complexity J-peak based algorithm can be used to fast estimate heartbeat intervals from non-standard BCG data...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28225761/amplified-stimulated-emission-in-upconversion-nanoparticles-for-super-resolution-nanoscopy
#10
Yujia Liu, Yiqing Lu, Xusan Yang, Xianlin Zheng, Shihui Wen, Fan Wang, Xavier Vidal, Jiangbo Zhao, Deming Liu, Zhiguang Zhou, Chenshuo Ma, Jiajia Zhou, James A Piper, Peng Xi, Dayong Jin
Lanthanide-doped glasses and crystals are attractive for laser applications because the metastable energy levels of the trivalent lanthanide ions facilitate the establishment of population inversion and amplified stimulated emission at relatively low pump power. At the nanometre scale, lanthanide-doped upconversion nanoparticles (UCNPs) can now be made with precisely controlled phase, dimension and doping level. When excited in the near-infrared, these UCNPs emit stable, bright visible luminescence at a variety of selectable wavelengths, with single-nanoparticle sensitivity, which makes them suitable for advanced luminescence microscopy applications...
February 22, 2017: Nature
https://www.readbyqxmd.com/read/28225624/optical-observation-of-plasmonic-nonlocal-effects-in-a-2d-superlattice-of-ultrasmall-gold-nanoparticles
#11
Hao Shen, Li Chen, Lorenzo Ferrari, Meng-Hsien Lin, N Asger Mortensen, Shangjr Gwo, Zhaowei Liu
The advances in recent nanofabrication techniques have facilitated explorations of metal structures into nanometer scales, where the traditional local-response Drude model with hard-wall boundary conditions fails to accurately describe their optical responses. The emerging nonlocal effects in single ultrasmall silver nanoparticles have been experimentally observed in single-particle spectroscopy enabled by the unprecedented high spatial resolution of electron energy loss spectroscopy (EELS). However, unambiguous optical observation of such new effects in gold nanoparticles has yet not been reported, due to the extremely weak scattering and the obscuring fingerprint of strong interband transitions...
February 22, 2017: Nano Letters
https://www.readbyqxmd.com/read/28225054/nutritional-adequacy-of-diets-for-adolescents-with-overweight-and-obesity-considerations-for-dietetic-practice
#12
N B Lister, M L Gow, K Chisholm, A Grunseit, S P Garnett, L A Baur
BACKGROUND/OBJECTIVES: Adolescents have unique nutrient requirements due to rapid growth and development. High rates of obesity in adolescents require a variety of diet interventions to achieve weight loss under clinical supervision. The aim of this study is to examine the nutritional adequacy of energy-restricted diets for adolescents. SUBJECTS/METHODS: Three popular diets were modelled for 7 days and assessed by comparing the nutrient profile to the Australian Nutrient Reference Values...
February 22, 2017: European Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/28225052/building-better-bones-in-childhood-a-randomized-controlled-study-to-test-the-efficacy-of-a-dietary-intervention-program-to-increase-calcium-intake
#13
D R Weber, L J Stark, R F Ittenbach, V A Stallings, B S Zemel
BACKGROUND/OBJECTIVES: Many children do not consume the recommended daily allowance of calcium. Inadequate calcium intake in childhood may limit bone accrual. The objective of this study was to determine if a behavioral modification and nutritional education (BM-NE) intervention improved dietary calcium intake and bone accrual in children. SUBJECTS/METHODS: 139 (86 female) healthy children, 7-10 years of age, were enrolled in this randomized controlled trial conducted over 36 months...
February 22, 2017: European Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/28224148/hypercrosslinked-porous-polymer-materials-design-synthesis-and-applications
#14
REVIEW
Liangxiao Tan, Bien Tan
Hypercrosslinked polymers (HCPs) are a series of permanent microporous polymer materials initially reported by Davankov, and have received an increasing level of research interest. In recent years, HCPs have experienced rapid growth due to their remarkable advantages such as diverse synthetic methods, easy functionalization, high surface area, low cost reagents and mild operating conditions. Judicious selection of monomers, appropriate length crosslinkers and optimized reaction conditions yielded a well-developed polymer framework with an adjusted porous topology...
February 22, 2017: Chemical Society Reviews
https://www.readbyqxmd.com/read/28222198/algorithmic-design-of-a-noise-resistant-and-efficient-closed-loop-deep-brain-stimulation-system-a-computational-approach
#15
Sofia D Karamintziou, Ana Luísa Custódio, Brigitte Piallat, Mircea Polosan, Stéphan Chabardès, Pantelis G Stathis, George A Tagaris, Damianos E Sakas, Georgia E Polychronaki, George L Tsirogiannis, Olivier David, Konstantina S Nikita
Advances in the field of closed-loop neuromodulation call for analysis and modeling approaches capable of confronting challenges related to the complex neuronal response to stimulation and the presence of strong internal and measurement noise in neural recordings. Here we elaborate on the algorithmic aspects of a noise-resistant closed-loop subthalamic nucleus deep brain stimulation system for advanced Parkinson's disease and treatment-refractory obsessive-compulsive disorder, ensuring remarkable performance in terms of both efficiency and selectivity of stimulation, as well as in terms of computational speed...
2017: PloS One
https://www.readbyqxmd.com/read/28221714/photonic-devices-out-of-equilibrium-transient-memory-signal-propagation-and-sensing
#16
Thomas Heuser, Rémi Merindol, Sebastian Loescher, Aileen Klaus, Andreas Walther
Soft photonic materials are important for sensors, displays, or energy management and have become switchable under static equilibrium conditions by integration of responsive polymer features. The next step is to equip such materials with the ability for autonomously dynamic and self-regulating behavior, which would advance their functionality and application possibilities to new levels. Here, this study shows the system integration of a nonlinear, biocatalytic pH-feedback system with a pH-responsive block copolymer photonic gel, and demonstrates autonomous transient memories, remotely controlled signal propagation, and sensing...
February 21, 2017: Advanced Materials
https://www.readbyqxmd.com/read/28221262/recent-advances-in-computed-tomographic-technology-cardiopulmonary-imaging-applications
#17
Azadeh Tabari, Roberto Lo Gullo, Venkatesh Murugan, Alexi Otrakji, Subba Digumarthy, Mannudeep Kalra
Cardiothoracic diseases result in substantial morbidity and mortality. Chest computed tomography (CT) has been an imaging modality of choice for assessing a host of chest diseases, and technologic advances have enabled the emergence of coronary CT angiography as a robust noninvasive test for cardiac imaging. Technologic developments in CT have also enabled the application of dual-energy CT scanning for assessing pulmonary vascular and neoplastic processes. Concerns over increasing radiation dose from CT scanning are being addressed with introduction of more dose-efficient wide-area detector arrays and iterative reconstruction techniques...
March 2017: Journal of Thoracic Imaging
https://www.readbyqxmd.com/read/28220393/common-and-distinct-regulation-of-human-and-mouse-brown-and-beige-adipose-tissues-a-promising-therapeutic-target-for-obesity
#18
REVIEW
Xuejiao Liu, Christopher Cervantes, Feng Liu
Obesity, which underlies various metabolic and cardiovascular diseases, is a growing public health challenge for which established therapies are inadequate. Given the current obesity epidemic, there is a pressing need for more novel therapeutic strategies that will help adult individuals to manage their weight. One promising therapeutic intervention for reducing obesity is to enhance energy expenditure. Investigations into human brown fat and the recently discovered beige/brite fat have galvanized intense research efforts during the past decade because of their pivotal roles in energy dissipation...
February 20, 2017: Protein & Cell
https://www.readbyqxmd.com/read/28219828/treating-cognitive-impairment-with-transcranial-low-level-laser-therapy
#19
Jack C de la Torre
This report examines the potential of low level laser therapy (LLLT) to alter brain cell function and neurometabolic pathways using red or near infrared (NIR) wavelengths transcranially for the prevention and treatment of cognitive impairment. Although laser therapy on human tissue has been used for a number of medical conditions since the late 1960s, it is only recently that several clinical studies have shown its value in raising neurometabolic energy levels that can improve cerebral hemodynamics and cognitive abilities in humans...
February 13, 2017: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/28219468/in-situ-and-in-vitro-ruminal-starch-degradation-of-grains-from-different-rye-triticale-and-barley-genotypes
#20
J Krieg, N Seifried, H Steingass, M Rodehutscord
In recent years, advances in plant breeding were achieved, which potentially led to modified nutritional values of cereal grains. The present study was conducted in order to obtain a broad overview of ruminal digestion kinetics of rye, triticale and barley grains, and to highlight differences between the grain species. In total, 20 genotypes of each grain species were investigated using in situ and in vitro methods. Samples were ground (2 mm), weighed into polyester bags, and incubated in situ 1 to 48 h in three ruminally cannulated lactating dairy cows...
February 21, 2017: Animal: An International Journal of Animal Bioscience
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