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https://www.readbyqxmd.com/read/28422085/resonant-rectifier-ics-for-piezoelectric-energy-harvesting-using-low-voltage-drop-diode-equivalents
#1
Amad Ud Din, Seneke Chamith Chandrathna, Jong-Wook Lee
Herein, we present the design technique of a resonant rectifier for piezoelectric (PE) energy harvesting. We propose two diode equivalents to reduce the voltage drop in the rectifier operation, a minuscule-drop-diode equivalent (MDDE) and a low-drop-diode equivalent (LDDE). The diode equivalents are embedded in resonant rectifier integrated circuits (ICs), which use symmetric bias-flip to reduce the power used for charging and discharging the internal capacitance of a PE transducer. The self-startup function is supported by synchronously generating control pulses for the bias-flip from the PE transducer...
April 19, 2017: Sensors
https://www.readbyqxmd.com/read/28399415/nitrogen-removal-performance-and-loading-capacity-of-a-novel-single-stage-nitritation-anammox-system-with-syntrophic-micro-granules
#2
Shaopo Wang, Yuan Liu, Qigui Niu, Jiayuan Ji, Toshimasa Hojo, Yu-You Li
The operation performance of a novel micro-granule based syntrophic system of nitritation and anammox was studied by controlling the oxygen concentration and maintaining a constant temperature of 25°C. With the oxygen concentration of around 0.11 (<0.15)mg/L, the single-stage nitritation-anammox system was startup successfully at a nitrogen loading rate (NLR) of 1.5kgN/m(3)/d. The reactor was successfully operated at volumetric N loadings ranging from 0.5 to 2.5kgN/m(3)/d with a high nitrogen removal of 82%...
March 29, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28398309/-tinder-for-startups
#3
Andrew Marshall
No abstract text is available yet for this article.
April 11, 2017: Nature Biotechnology
https://www.readbyqxmd.com/read/28398308/biotech-startups-woo-increasing-numbers-of-crowdfunders
#4
Nuala Moran
No abstract text is available yet for this article.
April 11, 2017: Nature Biotechnology
https://www.readbyqxmd.com/read/28392977/a-66pw-discontinuous-switch-capacitor-energy-harvester-for-self-sustaining-sensor-applications
#5
Xiao Wu, Yao Shi, Supreet Jeloka, Kaiyuan Yang, Inhee Lee, Dennis Sylvester, David Blaauw
We present a discontinuous harvesting approach for switch capacitor DC-DC converters that enables ultra-low power energy harvesting. By slowly accumulating charge on an input capacitor and then transferring it to a battery in burst-mode, switching and leakage losses in the DC-DC converter can be optimally traded-off with the loss due to non-ideal MPPT operation. The harvester uses a 15pW mode controller, an automatic conversion ratio modulator, and a moving sum charge pump for low startup energy upon a mode switch...
June 2016: Symposium on VLSI Circuits: [proceedings]. Symposium on VLSI Circuits
https://www.readbyqxmd.com/read/28381712/startup-of-pedagogy-in-pharmaceutical-education-what-to-see-how-to-consider-and-what-is-revealed
#6
Etsuko Arita, Satoko Ishikawa
No abstract text is available yet for this article.
2017: Yakugaku Zasshi: Journal of the Pharmaceutical Society of Japan
https://www.readbyqxmd.com/read/28380124/geographic-and-socioeconomic-distribution-of-food-vendors-a-case-study-of-a-municipality-in-the-southern-brazil
#7
Elizabeth Nappi Correa, Cristina Maria Proença Padez, Ângelo Horta de Abreu, Francisco de Assis Guedes de Vasconcelos
The objective of this study was to identify the food vendor distribution profile of the city of Florianópolis, Santa Catarina State, Brazil, and investigate its association with the socioeconomic and demographic characteristics of different municipal regions. This descriptive, cross-sectional study obtained the location of food vendors from secondary data from different institutional sources. The density of different types of food vendors per 1,000 inhabitants in each municipal weighted area was calculated...
March 30, 2017: Cadernos de Saúde Pública
https://www.readbyqxmd.com/read/28325449/tcontrol-a-mobile-app-to-follow-up-tobacco-quitting-patients
#8
Marc Pifarré, Adrián Carrera, Jordi Vilaplana, Josep Cuadrado, Sara Solsona, Francesc Abella, Francesc Solsona, Rui Alves
BACKGROUND AND OBJECTIVE: Tobacco smoking is a major risk factor for a wide range of respiratory and circulatory diseases in active and passive smokers. Well-designed campaigns are raising awareness to the problem and an increasing number of smokers seeks medical assistance to quit their habit. In this context, there is the need to develop mHealth Apps that assist and manage large smoke quitting programs in efficient and economic ways. OBJECTIVES: Our main objective is to develop an efficient and free mHealth app that facilitates the management of, and assistance to, people who want to quit smoking...
April 2017: Computer Methods and Programs in Biomedicine
https://www.readbyqxmd.com/read/28303114/mentoring-top-leadership-promotes-organizational-innovativeness-through-psychological-safety-and-is-moderated-by-cognitive-adaptability
#9
James H Moore, Zhongming Wang
Mentoring continues to build momentum among startups and established enterprises due to its positive impact on individuals and organizations. Unlike previous studies, this research focuses on mentoring higher level leadership, such as the CEO, and demonstrates its unique relationship to organizational innovativeness. Our sample included 200 mentored executives and entrepreneurs who personally identify and exploit opportunities. Our findings confirm that mentoring top leaders positively relates to their perceived innovativeness of the organization and that the relationship is mediated by these leaders' perception of psychological safety within the organization...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28276800/sepsis-alert-a-triage-model-that-reduces-time-to-antibiotics-and-length-of-hospital-stay
#10
Mari Rosenqvist, Emma Fagerstrand, Peter Lanbeck, Olle Melander, Per Åkesson
OBJECTIVE: To study if a modified triage system at an Emergency Department (ED) combined with educational efforts resulted in reduced time to antibiotics and decreased length of hospital stay (LOS) for patients with severe infection. METHODS: A retrospective, observational study comparing patients before and after the start of a new triage model at the ED of a University Hospital. After the implementation of the model, patients with fever and abnormal vital signs were triaged into a designated sepsis line (Sepsis Alert) for rapid evaluation by the attending physician supported by a infectious diseases (IDs) specialist...
July 2017: Infectious Diseases
https://www.readbyqxmd.com/read/28273578/polarity-inversion-of-bioanode-for-biocathodic-reduction-of-aromatic-pollutants
#11
Hui Yun, Bin Liang, De-Yong Kong, Hao-Yi Cheng, Zhi-Ling Li, Ya-Bing Gu, Hua-Qun Yin, Ai-Jie Wang
The enrichment of specific pollutant-reducing consortium is usually required prior to the startup of biocathode bioelectrochemical system (BES) and the whole process is time consuming. To rapidly establish a non-specific functional biocathode, direct polar inversion from bioanode to biocathode is proposed in this study. Based on the diverse reductases and electron transfer related proteins of anode-respiring bacteria (ARB), the acclimated electrochemically active biofilm (EAB) may catalyze reduction of different aromatic pollutants...
February 27, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28254050/high-solids-anaerobic-mono-digestion-of-riverbank-grass-under-thermophilic-conditions
#12
Fetra J Andriamanohiarisoamanana, Nobuyuki Matsunami, Takaki Yamashiro, Masahiro Iwasaki, Ikko Ihara, Kazutaka Umetsu
The purpose of this study was to investigate the potential of high-solids anaerobic mono-digestion of riverbank grass under thermophilic conditions, focusing on the effects of the strength and the amount of inoculum. Ensiled grass was inoculated with three different inocula; inoculum from liquid anaerobic digester (LI), inoculum from dry anaerobic digester (DI), and mixture of LI and DI (MI), at feedstock-to-inoculum ratio (FIR) of 1, 2 and 4. The ensiling process of riverbank grass reduced moisture content (p>0...
February 2017: Journal of Environmental Sciences (China)
https://www.readbyqxmd.com/read/28190507/best-practices-in-early-phase-medical-device-development-engineering-prototyping-and-the-beginnings-of-a-quality-management-system
#13
Kristy Fearis, Aidan Petrie
Kristy Fearis is the founder and president of KPConsulting. She has held various positions in the medical device and research industry. She has led programs for medical industry leaders Medtronic, Edward Lifesciences, and Kimberly-Clark Healthcare to develop and commercialize Class II and III devices. Although a true quality management systems specialist at heart, Kristy has a passion for effectively and efficiently applying quality systems principles to early stage development to maximize benefit while minimizing impact on resources and time to market...
March 2017: Surgery
https://www.readbyqxmd.com/read/28178270/encouraging-entrepreneurship-in-university-labs-research-activities-research-outputs-and-early-doctorate-careers
#14
Michael Roach
This paper investigates how the encouragement of entrepreneurship within university research labs relates with research activities, research outputs, and early doctorate careers. Utilizing a panel survey of 6,840 science & engineering doctoral students at 39 R1 research universities, this study shows that entrepreneurship is widely encouraged across university research labs, ranging from 54% in biomedical engineering to 18% in particle physics, while only a small share of labs openly discourage entrepreneurship, from approximately 3% in engineering to approximately 12% in the life sciences...
2017: PloS One
https://www.readbyqxmd.com/read/28178241/erratum-innovative-academic-startups-2016
#15
Brady Huggett
No abstract text is available yet for this article.
February 8, 2017: Nature Biotechnology
https://www.readbyqxmd.com/read/28167491/simplified-3d-protocol-capable-of-generating-early-cortical-neuroepithelium
#16
Dwayne B Holmes, Vivi M Heine
Here, we report a 3D cerebellar differentiation protocol with quick startup method, defined medium and no special materials or handling requirements. Three fibroblast growth factors (FGF2, 4 and 8) were used for cerebellar patterning and smoothened agonist (SAG) for granule cell development. After 35 days, differentiation products exhibited similar structures and neuronal markers reported in prior 'organoid' and 'spheroid' protocols. This included cells positive for KIRREL2 (a marker of early cerebellar neuroepithelium) and ZIC1 (a marker for granule cells)...
March 15, 2017: Biology Open
https://www.readbyqxmd.com/read/28153598/a-demonstration-of-mixing-robustness-in-a-direct-compression-continuous-manufacturing-process
#17
Wyatt J Roth, Ahmad Almaya, Timothy T Kramer, Jeffrey D Hofer
The purpose of this work was to assess the impact of continuous mixing on tablet critical quality attributes (CQAs) manufactured using a continuous, direct compression process. A 9-run design of experiments (DoE) that bracketed the range of commercially relevant mixer speeds, mixer orientations, and mass flow rates was executed using a formulation containing a cohesive drug substance at relatively low drug load. Drug substance dispensed concentration using loss-in-weight feeders was within 1% of target for each experiment with 30-s mass flow relative standard deviation values of 3...
January 30, 2017: Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28129140/committing-to-memory-memory-prosthetics-show-promise-in-helping-those-with-neurodegenerative-disorders
#18
Michele Solis
Cell phone chimes, sticky notes, even the proverbial string around a finger-these timehonored external cues help guard against our inevitable memory lapses. But some internal help to the brain itself may be on the way in the form of what's being called memory prosthetics. Once considered to be on the fringes of neuroscience, the idea of adding hardware to the brain to help with memory has gathered steam. In 2014, the U.S. Defense Advanced Research Projects Agency (DARPA) made a US$30 million investment in memory prosthetic research as part of the Obama administration's Brain Research through Advancing Innovative Neurotechnologies initiative...
January 2017: IEEE Pulse
https://www.readbyqxmd.com/read/28110229/aerobic-granular-sludge-inoculated-microbial-fuel-cells-for-enhanced-epoxy-reactive-diluent-wastewater-treatment
#19
Kai Cheng, Jingping Hu, Huijie Hou, Bingchuan Liu, Qin Chen, Keliang Pan, Wenhong Pu, Jiakuan Yang, Xu Wu, Changzhu Yang
Microbial consortiums aggregated on the anode surface of microbial fuel cells (MFCs) are critical factors for electricity generation as well as biodegradation efficiencies of organic compounds. Here in this study, aerobic granular sludge (AGS) was assembled on the surface of the MFC anode to form an AGS-MFC system with superior performance on epoxy reactive diluent (ERD) wastewater treatment. AGS-MFCs successfully shortened the startup time from 13d to 7d compared to the ones inoculated with domestic wastewater...
April 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28104698/periconceptional-maternal-one-carbon-biomarkers-are-associated-with-embryonic-development-according-to-the-carnegie-stages
#20
F Parisi, M Rousian, A H J Koning, S P Willemsen, I Cetin, R P M Steegers-Theunissen
STUDY QUESTION: Is periconceptional maternal one-carbon (I-C) metabolism associated with embryonic morphological development in non-malformed ongoing pregnancies? SUMMARY ANSWER: Serum vitamin B12, red blood cell (RBC) folate and plasma total homocysteine (tHcy) are associated with embryonic development according to the Carnegie stages. WHAT IS KNOWN ALREADY: Derangements in maternal I-C metabolism affect reproductive and pregnancy outcomes, as well as future health of the offspring...
March 1, 2017: Human Reproduction
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