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https://www.readbyqxmd.com/read/29141141/electronic-and-torsional-effects-on-hydrogen-atom-transfer-from-aliphatic-c-h-bonds-a-kinetic-evaluation-via-reaction-with-the-cumyloxyl-radical
#1
Michela Salamone, Teo Martin, Michela Milan, Miquel Costas, Massimo Bietti
A kinetic study on the HAT reactions from the aliphatic C-H bonds of a series of 1-Z-pentyl, 1-Z-propyl and Z-cyclohexyl derivatives, and of a series of N-alkylamides and N-alkylphthalimides to the electrophilic cumyloxyl radical (CumO•) has been carried out. With 1-pentyl and 1-propyl derivatives, α-CH2 activation towards CumO• is observed for Z = Ph, OH, NH2, NHAc, evidenced by an increase in kH as compared to the unsubstituted alkane substrate. A decrease in kH has been instead measured for Z = OAc, NPhth, CO2Me, Cl, Br, CN, indicative of α-CH2 deactivation with HAT that predominantly occurs from the most remote methylenic site...
November 15, 2017: Journal of Organic Chemistry
https://www.readbyqxmd.com/read/29141008/smartphone-based-quantitative-measurements-on-holographic-sensors
#2
Gita Khalili Moghaddam, Christopher Robin Lowe
The research reported herein integrates a generic holographic sensor platform and a smartphone-based colour quantification algorithm in order to standardise and improve the determination of the concentration of analytes of interest. The utility of this approach has been exemplified by analysing the replay colour of the captured image of a holographic pH sensor in near real-time. Personalised image encryption followed by a wavelet-based image compression method were applied to secure the image transfer across a bandwidth-limited network to the cloud...
2017: PloS One
https://www.readbyqxmd.com/read/29140716/transversely-divergent-second-harmonic-generation-by-surface-plasmon-polaritons-on-single-metallic-nanowires
#3
Yang Li, Meng Kang, Junjun Shi, Ke Wu, Shunping Zhang, Hongxing Xu
Coherently adding up signal wave from different locations are a prerequisite for realizing efficient nonlinear optical processes in traditional optical configurations. While nonlinear optical processes in plasmonic waveguides with subwavelength light confinement are in principle desirable for enhancing nonlinear effects, so far it has been difficult to improve the efficiency due to the large momentum mismatch. Here we demonstrate, using remotely excited surface plasmon polaritons (SPPs), axial collimated but transversely divengent second harmonic (SH) generation in a single silver nanowire - monolayer molybdenum disulfide hybrid system...
November 15, 2017: Nano Letters
https://www.readbyqxmd.com/read/29140600/vegetation-cover-another-dominant-factor-in-determining-global-water-resources-in-forested-regions
#4
Xiaohua Wei, Qiang Li, Mingfang Zhang, Krysta Giles-Hansen, Wenfei Liu, Houbao Fan, Yi Wang, Guoyi Zhou, Shilong Piao, Shirong Liu
Forested catchments provide critically important water resources. Due to dramatic global forest change over the past decades, the importance of including forest or vegetation change in the assessment of water resources under climate change has been highly recognized by Intergovernmental Panel on Climate Change (IPCC); however, this importance has not yet been examined quantitatively across the globe. Here, we used four remote sensing-based indices to represent changes in vegetation cover in forest dominated regions, and then applied them to widely-used models: the Fuh model and the Choudhury-Yang model to assess relative contributions of vegetation and climate changes to annual runoff variations from 2000 to 2011 in forested landscape (forest coverage > 30%) across the globe...
November 15, 2017: Global Change Biology
https://www.readbyqxmd.com/read/29140324/method-to-retrieve-the-nocturnal-aerosol-optical-depth-with-a-ccd-laser-aerosol-detective-system
#5
Yuxuan Bian, Chunsheng Zhao, Wanyun Xu, Nan Ma, Jiangchuan Tao, Ye Kuang, Gang Zhao, Hongjian Liu
Aerosol optical depth (AOD) is a crucial parameter in describing the atmospheric pollution and analyzing the influences of aerosol on the radiative equilibrium. Currently, no method can precisely and continuously measure the nocturnal AOD. In this study, a novel method was developed to retrieve the nocturnal AOD based on a remote sensing instrument called the charge-coupled device-laser aerosol detective system (CCD-LADS). CCD-LADS consists of a CCD camera, a continuous laser, a fisheye lens, and related filters...
November 15, 2017: Optics Letters
https://www.readbyqxmd.com/read/29140281/non-contact-sensor-for-long-term-continuous-vital-signs-monitoring-a-review-on-intelligent-phased-array-doppler-sensor-design
#6
REVIEW
Travis Hall, Donald Y C Lie, Tam Q Nguyen, Jill C Mayeda, Paul E Lie, Jerry Lopez, Ron E Banister
It has been the dream of many scientists and engineers to realize a non-contact remote sensing system that can perform continuous, accurate and long-term monitoring of human vital signs as we have seen in many Sci-Fi movies. Having an intelligible sensor system that can measure and record key vital signs (such as heart rates and respiration rates) remotely and continuously without touching the patients, for example, can be an invaluable tool for physicians who need to make rapid life-and-death decisions. Such a sensor system can also effectively help physicians and patients making better informed decisions when patients' long-term vital signs data is available...
November 15, 2017: Sensors
https://www.readbyqxmd.com/read/29140234/prevalence-of-trypanosoma-cruzi-and-other-trypanosomatids-in-frequently-hunted-wild-mammals-from-the-peruvian-amazon
#7
E Angelo Morales, Pedro Mayor, Mark Bowler, Esar Aysanoa, Erika S Pérez-Velez, Jocelyn Pérez, Julio A Ventocilla, G Christian Baldeviano, Andrés G Lescano
To better understand the ecology of Trypanosoma cruzi in the northeastern Peruvian Amazon, we evaluated the prevalence of T. cruzi and other trypanosomatids in four orders of wild mammals hunted and consumed by inhabitants of three remote indigenous communities in the Peruvian Amazon. Of 300 wild mammals sampled, 115 (38.3%) were infected with trypanosomatids and 15 (5.0%) with T. cruzi. The prevalence of T. cruzi within each species was as follows: large rodents (Cuniculus paca, 5.5%; Dasyprocta spp., 2.6%), edentates (Dasypus novemcinctus, 4...
November 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/29139643/the-remote-isolate-of-the-croatian-littoral-%C3%A2-50-years-of-research-on-the-island-of-susak-with-new-insights-into-its-genetic-diversity
#8
Jelena Šarac
This paper presents a review of the 50-year long anthropological and epidemiological research of the Susak population. Island of Susak is an example of extreme genetic isolate, with a very low level of heterozygosity and a significantly high level of inbreeding, due to the practice of endogamy. Its specific features have put the island in the focus of diverse research during the last five decades and in this study we additionally present new insights into the island’s maternal genetic heritage. For this purpose, mitochondrial DNA (mtDNA) haplogroup diversity was defined based on SNPs of the control and coding region on the sample of 64 autochthonous individuals from the island...
March 2017: Collegium Antropologicum
https://www.readbyqxmd.com/read/29139285/subradiant-dipolar-interactions-in-plasmonic-nanoring-resonator-array-for-integrated-label-free-biosensing
#9
Yuzhang Liang, Hui Zhang, Wenqi Zhu, Amit Agrawal, Henri J Lezec, Lixia Li, Wei Peng, Yi Zou, Yan-Qing Lu, Ting Xu
With the development of advanced nanofabrication technologies over the last decade, plasmonic nanostructures have attracted wide attention for their potential in label-free biosensing applications. However, the sensing performance of nanostructured plasmonic sensors is primarily limited by the broad-linewidth features with low peak-to-dip signal ratio in the extinction spectra that result from strong radiative damping. Here, we propose and systematically investigate the in-plane and out-of-plane dipolar interactions in an array of plasmonic nanoring resonators that are from the spatial combination of classic nanohole and nanodisk structures...
November 15, 2017: ACS Sensors
https://www.readbyqxmd.com/read/29139261/-study-on-suitable-distribution-areas-of-sichuan-safflower-in-sichuan-province-based-on-3s-technologies
#10
Wu-Xue Cheng, Guang Dong, Ming-Yan Wu, Lan He, Jia-Li Chen
Sichuan safflower (Carthamus tinctorius) is a traditional Chinese medicine for promoting blood circulation and removing blood stasis. In this paper, taking Sichuan province as an example, based on TM image, digital elevation model (DEM), meteorology, soil and other data, and using remote sensing and GIS technology to extract grassland, elevation, temperature and precipitation, soil and other influencing factors, the spatial distribution of the suitability of safflower was studied, and the field investigation was carried out...
August 2017: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
https://www.readbyqxmd.com/read/29138585/a-comparative-analysis-of-clinical-outcomes-and-disposable-costs-of-different-catheter-ablation-methods-for-the-treatment-of-atrioventricular-nodal-reentrant-tachycardia
#11
Adam E Berman, Harold Rivner, Robin Chalkley, Vahé Heboyan
Background: Catheter ablation of atrioventricular nodal reentrant tachycardia (AVNRT) is a commonly performed electrophysiology (EP) procedure. Few data exist comparing conventional (CONV) versus novel ablation strategies from both clinical and direct cost perspectives. We sought to investigate the disposable costs and clinical outcomes associated with three different ablation methodologies used in the ablation of AVNRT. Methods: We performed a retrospective review of AVNRT ablations performed at Augusta University Medical Center from 2006 to 2014...
2017: ClinicoEconomics and Outcomes Research: CEOR
https://www.readbyqxmd.com/read/29138459/the-genomic-landscape-of-nepalese-tibeto-burmans-reveals-new-insights-into-the-recent-peopling-of-southern-himalayas
#12
Guido A Gnecchi-Ruscone, Choongwon Jeong, Sara De Fanti, Stefania Sarno, Michela Trancucci, Davide Gentilini, Anna M Di Blasio, Mingma G Sherpa, Phurba T Sherpa, Giorgio Marinelli, Marco Di Marcello, Luca Natali, Davide Peluzzi, Davide Pettener, Anna Di Rienzo, Donata Luiselli, Marco Sazzini
While much research attention has focused on demographic processes that enabled human diffusion on the Tibetan plateau, little is known about more recent colonization of Southern Himalayas. In particular, the history of migrations, admixture and/or isolation of populations speaking Tibeto-Burman languages, which is supposed to be quite complex and to have reshaped patterns of genetic variation on both sides of the Himalayan arc, remains only partially elucidated. We thus described the genomic landscape of previously unsurveyed Tibeto-Burman (i...
November 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29138174/first-nations-hepatitis-c-virus-infections-six-year-retrospective-study-of-on-reserve-rates-of-newly-reported-infections-in-northwestern-ontario
#13
Janet Gordon, Natalie Bocking, Kathy Pouteau, Terri Farrell, Gareth Ryan, Len Kelly
OBJECTIVE: To document rates of newly reported hepatitis C virus (HCV) cases from 2010 to 2015 in remote First Nations communities. DESIGN: Retrospective analysis of aggregate data of newly reported HCV antibody-positive (Ab+) cases. SETTING: Northwestern Ontario. PARTICIPANTS: A total of 31 First Nations communities (an on-reserve population of 20 901) supported in health care by the Sioux Lookout First Nations Health Authority...
November 2017: Canadian Family Physician Médecin de Famille Canadien
https://www.readbyqxmd.com/read/29138127/exploring-working-relationships-in-mental-health-care-via-an-e-recovery-portal-qualitative-study-on-the-experiences-of-service-users-and-health-providers
#14
Monica Strand, Deede Gammon, Lillian Sofie Eng, Cornelia Ruland
BACKGROUND: The quality of working relationships between service users and health providers is fundamental in the processes of recovery in mental health. How Internet-based interventions will influence these relationships for persons with long-term care needs, and the measures that can be taken to maintain and enhance working relationships through Internet, is still not well understood. OBJECTIVE: The aim of this study was to gain insights into how service users and health providers experience their working relationships when they are offered the option of supplementing ongoing collaboration with an e-recovery portal...
November 14, 2017: JMIR Mental Health
https://www.readbyqxmd.com/read/29137959/moving-from-clinic-to-home-what-the-future-holds-for-ophthalmic-telemedicine
#15
Nancy M Holekamp
PURPOSE: To describe the expanding role of telemedicine in healthcare, the key criteria required for a successful device and program implementation, and the current and future role of home monitoring in ophthalmology. DESIGN: Expert perspective METHODS: Analysis with real-world interpretation of home monitoring technologies including current adoption barriers and expanded future demands based on demographic and market forces. RESULTS: Remote patient monitoring represents a paradigm shift in the way physicians care for patients...
November 11, 2017: American Journal of Ophthalmology
https://www.readbyqxmd.com/read/29136923/a-high-sensitivity-biosensor-to-detect-the-presence-of-perfluorinated-compounds-in-environment
#16
Nunzio Cennamo, Luigi Zeni, Paolo Tortora, Maria Elena Regonesi, Alessandro Giusti, Maria Staiano, Sabato D'Auria, Antonio Varriale
A novel surface plasmon resonance (SPR) optical fiber biosensor, able to bind perfluorooctanoate and perfluorooctanesulfonate compounds, is presented. In the first step, an ad hoc antibody compound has been designed, produced and tested by ELISA, then, in the second step, the gold surface of a plastic optical fiber sensor has been derivatizated and functionalized with this new bio-receptor, able to bind target analytes with high affinity and selectivity. The experimental data have shown that the developed SPR optical fiber biosensor makes it possible to detect these compounds...
February 1, 2018: Talanta
https://www.readbyqxmd.com/read/29136657/contrasts-in-the-marine-ecosystem-of-two-macaronesian-islands-a-comparison-between-the-remote-selvagens-reserve-and-madeira-island
#17
Alan M Friedlander, Enric Ballesteros, Sabrina Clemente, Emanuel J Gonçalves, Andrew Estep, Paul Rose, Enric Sala
The islands of Madeira and Selvagens are less than 300 km apart but offer a clear contrast between a densely populated and highly developed island (Madeira), and a largely uninhabited and remote archipelago (Selvagens) within Macaronesia in the eastern Atlantic. The Madeira Archipelago has ~260,000 inhabitants and receives over six million visitor days annually. The Selvagens Islands Reserve is one of the oldest nature reserves in Portugal and comprises two islands and several islets, including the surrounding shelf to a depth of 200 m...
2017: PloS One
https://www.readbyqxmd.com/read/29136617/prognostic-factors-in-patients-with-an-implanted-pacemaker-after-80-years-of-age-in-a-4-year-follow-up
#18
Krystyna Krzemień-Wolska, Andrzej Tomasik, Celina Wojciechowska, Karolina Barańska-Pawełczak, Ewa Nowalany-Kozielska, Wojciech Jacheć
BACKGROUND: The controversy over electrotherapy for patients aged >80 years occurs already at the stage of qualification for this treatment type and concerns optimal device selection, the implantation strategy, and the overall benefit from pacemaker therapy. The group also has a considerable number of cardiovascular risk factors, and the data from the literature on the impact of the pacing mode on the remote prognosis of this group are ambiguous. OBJECTIVE: Assessment of the risk factors for death among patients with implanted pacemakers >80 years of age in a 4-year follow-up...
November 15, 2017: Gerontology
https://www.readbyqxmd.com/read/29136567/persistent-organic-pollutants-in-red-and-white-blooded-high-antarctic-notothenioid-fish-from-the-remote-weddell-sea
#19
Anneli Strobel, Peter Schmid, Patricia Burkhardt-Holm, Helmut Segner, Markus Zennegg
It has been suggested that High-Antarctic waters, despite their remoteness from human activities, are impacted by anthropogenic pollution, and that the local biota are accumulating the contaminants. At present, no data exist on persistent organic pollutant (POP) body burdens for notothenioid fish inhabiting the High-Antarctic Weddell Sea. We determined the pollutant load in white muscle tissue of red- and white-blooded notothenoids from the Weddell Sea (Trematomus loennbergii and Chionodraco hamatus, respectively), and compared them to our previous measurements of POPs in Low-Antarctic notothenioids...
November 7, 2017: Chemosphere
https://www.readbyqxmd.com/read/29136373/photocontrol-of-antibacterial-activity-shifting-from-uv-to-red-light-activation
#20
Michael Wegener, Mickel J Hansen, Arnold J M Driessen, Wiktor Szymanski, Ben L Feringa
The field of photopharmacology aims to introduce smart drugs that, through the incorporation of molecular photoswitches, allow for the remote spatial and temporal control of bioactivity by light. This concept could be particularly beneficial in the treatment of bacterial infections, by reducing the systemic and environmental side-effects of antibiotics. A major concern in the realization of such light-responsive drugs is the wavelength of the light that is applied. Studies on the photocontrol of biologically active agents mostly rely on UV light, which is cytotoxic and poorly suited for tissue penetration...
November 14, 2017: Journal of the American Chemical Society
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