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https://www.readbyqxmd.com/read/29739222/communication-glass-transition-and-melting-lines-of-an-ionic-liquid
#1
Thamires A Lima, Luiz F O Faria, Vitor H Paschoal, Mauro C C Ribeiro
The phase diagram of the ionic liquid 1-butyl-1-methylpyrrolidinium bis(trifluoromethanesufonyl)imide, [Pyrr1,4 ][NTf2 ], was explored by synchroton X-ray diffraction and Raman scattering measurements as a function of temperature and pressure. Glass transition Tg (p) and melting Tm (p) temperatures were obtained from atmospheric pressure up to ca. 2.0 GPa. We found that both the Tg (p) and Tm (p) curves follow essentially the same pressure dependence. The similarity of pressure coefficients, dTg /dp ≈ dTm /dp, is explained within the non-equilibrium thermodynamics approach for the glass transition by assuming that one of the Ehrenfest equations is appropriated for Tg (p), whereas Tm (p) follows the Clausius-Clapeyron equation valid for the first-order transitions...
May 7, 2018: Journal of Chemical Physics
https://www.readbyqxmd.com/read/29695829/a-new-model-to-predict-the-influence-of-surface-temperature-on-contact-angle
#2
Fabio Villa, Marco Marengo, Joël De Coninck
The measurement of the equilibrium contact angle (ECA) of a weakly evaporating sessile drop becomes very challenging when the temperatures are higher than ambient temperature. Since the ECA is a critical input parameter for numerical simulations of diabatic processes, it is relevant to know the variation of the ECA with the fluid and wall temperatures. Several research groups have studied the effect of temperature on ECA either experimentally, with direct measures, or numerically, using molecular dynamic simulations...
April 25, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29687453/a-diagnostic-tree-model-for-polytomous-responses-with-multiple-strategies
#3
Wenchao Ma
Constructed-response items have been shown to be appropriate for cognitively diagnostic assessments because students' problem-solving procedures can be observed, providing direct evidence for making inferences about their proficiency. However, multiple strategies used by students make item scoring and psychometric analyses challenging. This study introduces the so-called two-digit scoring scheme into diagnostic assessments to record both students' partial credits and their strategies. This study also proposes a diagnostic tree model (DTM) by integrating the cognitive diagnosis models with the tree model to analyse the items scored using the two-digit rubrics...
April 23, 2018: British Journal of Mathematical and Statistical Psychology
https://www.readbyqxmd.com/read/29657238/the-first-report-of-terbinafine-resistance-microsporum-canis-from-a-cat
#4
Yun-Hsia Hsiao, Charles Chen, Hock Siew Han, Rui Kano
A 2-year-old, exotic shorthair cat presented with baldness and mild scaling on trunk that was confirmed as Microsporum canis (M. canis) infection by the following methods. Wood's lamp and trichogram were used to demonstrate fungal elements suggestive of dermatophytosis consistent with M. canis. Dermatophyte test medium (DTM) and polymerase chain reaction (PCR) were used for identification. E-test and broth microdilution test were then utilized to estimate antifungal minimal inhibitory concentrations (MICs) towards ITZ and TRF respectively...
April 16, 2018: Journal of Veterinary Medical Science
https://www.readbyqxmd.com/read/29619178/dendronic-trimaltoside-amphiphiles-dtms-for-membrane-protein-study
#5
Aiman Sadaf, Yang Du, Claudia Santillan, Jonas S Mortensen, Iago Molist, Alpay B Seven, Parameswaran Hariharan, Georgios Skiniotis, Claus J Loland, Brian K Kobilka, Lan Guan, Bernadette Byrne, Pil Seok Chae
The critical contribution of membrane proteins in normal cellular function makes their detailed structure and functional analysis essential. Detergents, amphipathic agents with the ability to maintain membrane proteins in a soluble state in aqueous solution, have key roles in membrane protein manipulation. Structural and functional stability is a prerequisite for biophysical characterization. However, many conventional detergents are limited in their ability to stabilize membrane proteins, making development of novel detergents for membrane protein manipulation an important research area...
December 1, 2017: Chemical Science
https://www.readbyqxmd.com/read/29575015/duct-to-mucosa-versus-dunking-techniques-of-pancreaticojejunostomy-after-pancreaticoduodenectomy-do-we-need-more-trials-a-systematic-review-and-meta-analysis-with-trial-sequential-analysis
#6
REVIEW
Ragini Kilambi, Anand Narayan Singh
BACKGROUND: Pancreaticojejunostomy (PJ is the most widely used reconstruction technique after pancreaticoduodenectomy. Despite several randomized trials, the ideal technique of pancreaticojejunostomy remains debatable. We planned a meta-analysis of randomized trials comparing the two most common techniques of PJ (duct-to-mucosa and dunking) to identify the best available evidence in the current literature. METHODS: We searched the Pubmed/Medline, Web of science, Science citation index, Google scholar and Cochrane Central Register of Controlled Trials electronic databases till October 2017 for all English language randomized trials comparing the two approaches...
March 25, 2018: Journal of Surgical Oncology
https://www.readbyqxmd.com/read/29567161/analysis-of-isomeric-opioids-in-urine-using-lc-tims-tof-ms
#7
Kendra J Adams, Cesar E Ramirez, Natalie F Smith, Ana Celia Muñoz-Muñoz, Lawrence Andrade, Francisco Fernandez-Lima
In the present work, a fast separation, identification and quantification workflow based on liquid chromatography coupled to trapped ion mobility in tandem with mass spectrometry (LC-TIMS-MS) is described for the analysis of common isomeric drugs of abuse and their metabolites in human urine. In particular, the analytical performance of LC-TIMS-MS is shown for identification based on retention time, collision cross section and accurate mass for three sets of common isomeric opioids and their deuterated analogs in urine...
June 1, 2018: Talanta
https://www.readbyqxmd.com/read/29562627/towards-the-crowdsourcing-of-massive-smartphone-assisted-gps-sensor-ground-observations-for-the-production-of-digital-terrain-models
#8
Ido Massad, Sagi Dalyot
Digital Terrain Models (DTMs) used for the representation of the bare earth are produced from elevation data obtained using high-end mapping platforms and technologies. These require the handling of complex post-processing performed by authoritative and commercial mapping agencies. In this research, we aim to exploit user-generated data to produce DTMs by handling massive volumes of position and elevation data collected using ubiquitous smartphone devices equipped with Assisted-GPS sensors. As massive position and elevation data are collected passively and straightforwardly by pedestrians, cyclists, and drivers, it can be transformed into valuable topographic information...
March 17, 2018: Sensors
https://www.readbyqxmd.com/read/29490606/identification-of-novel-loci-associated-with-maturity-and-yield-traits-in-early-maturity-soybean-plant-introduction-lines
#9
Tanya R Copley, Marc-Olivier Duceppe, Louise S O'Donoughue
BACKGROUND: To continue to meet the increasing demands of soybean worldwide, it is crucial to identify key genes regulating flowering and maturity to expand the cultivated regions into short season areas. Although four soybean genes have been successfully utilized in early maturity breeding programs, new genes governing maturity are continuously being identified suggesting that there remains as yet undiscovered loci governing agronomic traits of interest. The objective of this study was to identify novel loci and genes involved in a diverse set of early soybean maturity using genome-wide association (GWA) analyses to identify loci governing days to maturity (DTM), flowering (DTF) and pod filling (DTPF), as well as yield and 100 seed weight in Canadian environments...
March 1, 2018: BMC Genomics
https://www.readbyqxmd.com/read/29482407/reliability-and-responsiveness-of-a-goniometric-device-for-measuring-the-range-of-motion-in-the-dart-throwing-motion-plane
#10
Kenji Kasubuchi, Yoshihiro Dohi, Hiroyuki Fujita, Takahiko Fukumoto
BACKGROUND: Dart-throwing motion (DTM) is an important component of wrist function and, consequently, has the potential to become an evaluation tool in rehabilitation. However, no measurement method is currently available to reliably measure range of motion (ROM) of the wrist in the DTM plane. OBJECTIVES: To determine the reliability and responsiveness of a goniometric device to measure wrist ROM in the DTM plane. METHODS: ROM of the wrist in the DTM plane was measured in 70 healthy participants...
February 26, 2018: Physiotherapy Theory and Practice
https://www.readbyqxmd.com/read/29398937/genome-wide-association-mapping-for-flowering-and-maturity-in-tropical-soybean-implications-for-breeding-strategies
#11
Rodrigo Iván Contreras-Soto, Freddy Mora, Fabiane Lazzari, Marco Antônio Rott de Oliveira, Carlos Alberto Scapim, Ivan Schuster
Knowledge of the genetic architecture of flowering and maturity is needed to develop effective breeding strategies in tropical soybean. The aim of this study was to identify haplotypes across multiple environments that contribute to flowering time and maturity, with the purpose of selecting desired alleles, but maintaining a minimal impact on yield-related traits. For this purpose, a genome-wide association study (GWAS) was undertaken to identify genomic regions that control days to flowering (DTF) and maturity (DTM) using a soybean association mapping panel genotyped for single nucleotide polymorphism (SNP) markers...
December 2017: Breeding Science
https://www.readbyqxmd.com/read/29393862/on-line-temperature-estimation-for-noisy-thermal-sensors-using-a-smoothing-filter-based-kalman-predictor
#12
Xin Li, Xingtao Ou, Zhi Li, Henglu Wei, Wei Zhou, Zhemin Duan
Dynamic thermal management (DTM) mechanisms utilize embedded thermal sensors to collect fine-grained temperature information for monitoring the real-time thermal behavior of multi-core processors. However, embedded thermal sensors are very susceptible to a variety of sources of noise, including environmental uncertainty and process variation. This causes the discrepancies between actual temperatures and those observed by on-chip thermal sensors, which seriously affect the efficiency of DTM. In this paper, a smoothing filter-based Kalman prediction technique is proposed to accurately estimate the temperatures from noisy sensor readings...
February 2, 2018: Sensors
https://www.readbyqxmd.com/read/29388822/improving-the-assessment-of-implicit-motives-using-irt-cultural-differences-and-differential-item-functioning
#13
J Malte Runge, Jonas W B Lang, Athanasios Chasiotis, Jan Hofer
Researchers have long been interested in studying differences in implicit motive between different groups. Implicit motives are typically measured by scoring text that respondents have written in response to picture cues. Recently, research on the measurement of implicit motives has made progress through the application of a dynamic Thurstonian item-response theory model (DTM; Lang, 2014 ) that captures 2 basic motivational processes in motivational research: motive competition and dynamic reduction of motive strength after a motive has been acted out...
February 1, 2018: Journal of Personality Assessment
https://www.readbyqxmd.com/read/29364127/cooperative-abnormality-detection-via-diffusive-molecular-communications
#14
Reza Mosayebi, Vahid Jamali, Nafiseh Ghoroghchian, Robert Schober, Masoumeh Nasiri-Kenari, Mahdieh Mehrabi
In this paper, we consider abnormality detection via diffusive molecular communications (MCs) for a network consisting of several sensors and a fusion center (FC). If a sensor detects an abnormality, it injects a number of molecules into the medium which is proportional to its sensing output. Two transmission schemes for releasing molecules into the medium are considered. In the first scheme, each sensor releases a different type of molecule (DTM), whereas in the second scheme, all sensors release the same type of molecule (STM)...
December 2017: IEEE Transactions on Nanobioscience
https://www.readbyqxmd.com/read/29322078/received-signal-strength-and-local-terrain-profile-data-for-radio-network-planning-and-optimization-at-gsm-frequency-bands
#15
Segun I Popoola, Aderemi A Atayero, Nasir Faruk
The behaviour of radio wave signals in a wireless channel depends on the local terrain profile of the propagation environments. In view of this, Received Signal Strength (RSS) of transmitted signals are measured at different points in space for radio network planning and optimization. However, these important data are often not publicly available for wireless channel characterization and propagation model development. In this data article, RSS data of a commercial base station operating at 900 and 1800 MHz were measured along three different routes of Lagos-Badagry Highway, Nigeria...
February 2018: Data in Brief
https://www.readbyqxmd.com/read/29180786/new-design-model-for-high-efficiency-cylindrical-diffractive-microlenses
#16
Ye Li, Huan Zhao, Sheng-Fei Feng, Jia-Sheng Ye, Xin-Ke Wang, Wen-Feng Sun, Peng Han, Yan Zhang
A new model, i.e., the decreasing thickness model (DTM) is proposed and employed for designing the cylindrical diffractive microlenses (CDMs). Focal performances of the designed CDMs are theoretically investigated by solving Maxwell's equations with the boundary element method. For comparison, the CDMs designed by the traditional equal thickness model (ETM) are also studied. Theoretical simulations demonstrate that focal performances of the designed CDMs are improved a lot via replacing the traditional ETM with the proposed DTM...
November 27, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29172149/exposure-to-deltamethrin-induces-oxidative-stress-and-decreases-of-energy-reserve-in-tissues-of-the-neotropical-fruit-eating-bat-artibeus-lituratus
#17
Jerusa Maria Oliveira, Nicole Fontes Losano, Suellen Silva Condessa, Renata Maria Pereira de Freitas, Silvia Almeida Cardoso, Mariella Bontempo Freitas, Leandro Licursi de Oliveira
Deltamethrin (DTM) is a synthetic pyrethroid insecticide highly used by farmers and home users. This pesticide has lipophilic properties that facilitate a high absorption and can cause toxicity in non-target organisms. During foraging, the fruit-eating bats Artibeus lituratus are exposed to pesticides. However, the knowledge of the toxicity of pesticides on the physiology of bats is relatively scarce. This study aimed to check the toxicity of short-term exposure to low concentration of DTM on fruit-eating bat A...
February 2018: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/29146510/relative-contributions-of-the-midcarpal-and-radiocarpal-joints-to-dart-thrower-s-motion-at-the-wrist
#18
Patrick M Kane, Bryan G Vopat, P Kaveh Mansuripur, Michael P Gaspar, Scott W Wolfe, Joseph J Crisco, Christopher Got
PURPOSE: To identify the relative contributions of the radiocarpal (RC) and midcarpal (MC) joints to dart-thrower's motion (DTM) of the wrist. METHODS: Six cadaveric upper extremities were fixed to a custom-designed loading jig allowing for pure moment-rotation analysis in 24 different directions of wrist motion. Each specimen was tested in 3 states: intact, simulated radiocarpal fusion (sRCF) and simulated pancarpal fusion (sPCF). Moments of ± 1.5 Nm were applied at each of 24 directions for each state and the resulting wrist rotation recorded...
March 2018: Journal of Hand Surgery
https://www.readbyqxmd.com/read/28956183/effectiveness-of-time-related-interventions-in-children-with-adhd-aged-9-15-years-a-randomized-controlled-study
#19
RANDOMIZED CONTROLLED TRIAL
Birgitta Wennberg, Gunnel Janeslätt, Anette Kjellberg, Per A Gustafsson
Specific problems with time and timing that affect daily routines, homework, school work, and social relations have been recognized in children with ADHD. The primary treatments for children with ADHD do not specifically focus on time-related difficulties. The aim of this randomized controlled study (RCT) was to investigate how multimodal interventions, consisting of training in time-processing ability (TPA) and compensation with time-assistive devices (TAD), affect TPA and daily time management (DTM) in children with ADHD and time difficulties, compared with only educational intervention...
March 2018: European Child & Adolescent Psychiatry
https://www.readbyqxmd.com/read/28919923/revealing-topics-and-their-evolution-in-biomedical-literature-using-bio-dtm-a-case-study-of-ginseng
#20
Qian Chen, Ni Ai, Jie Liao, Xin Shao, Yufeng Liu, Xiaohui Fan
BACKGROUND: Valuable scientific results on biomedicine are very rich, but they are widely scattered in the literature. Topic modeling enables researchers to discover themes from an unstructured collection of documents without any prior annotations or labels. In this paper, taking ginseng as an example, biological dynamic topic model (Bio-DTM) was proposed to conduct a retrospective study and interpret the temporal evolution of the research of ginseng. METHODS: The system of Bio-DTM mainly includes four components, documents pre-processing, bio-dictionary construction, dynamic topic models, topics analysis and visualization...
2017: Chinese Medicine
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