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https://www.readbyqxmd.com/read/28922841/interactive-problem-solving-sessions-in-an-introductory-bioscience-course-engaged-students-and-gave-them-feedback-but-did-not-increase-their-exam-scores
#1
James P McEvoy
Active learning, including the promotion of student interactivity in lectures, has been found to improve student engagement and performance in university science classes. This letter describes the use of Pearson's Learning Catalytics to run regular, formatively assessed problem-solving sessions as part of the semiflipped redesign of an introductory level university bioscience course. Students found the problem-solving sessions more engaging than a traditional lecture, and felt that they were receiving better feedback on their progress in the course...
October 2, 2017: FEMS Microbiology Letters
https://www.readbyqxmd.com/read/28922816/-people-love-player-s-cigarette-advertising-and-the-teenage-consumer-in-post-war-britain
#2
Daniel O'Neill
This article explores the background, creation and reception of a prominent cigarette advertising campaign from the early 1960s. The advertisements featured young couples falling in love as they shared Player's Medium cigarettes together. As such, the advertisements reflected the central place of the teenager within post-war British consumer culture. The campaign was built upon the insights of market research, particularly that carried out by Mark Abrams and his research organization Research Services Limited...
September 1, 2017: 20 Century British History
https://www.readbyqxmd.com/read/28922774/crop-model-assisted-phenomics-and-genome-wide-association-study-for-climate-adaptation-of-indica-rice-1-phenology
#3
Michael Dingkuhn, Richard Pasco, Julie M Pasuquin, Jean Damo, Jean-Christophe Soulié, Louis-Marie Raboin, Julie Dusserre, Abdoulaye Sow, Baboucarr Manneh, Suchit Shrestha, Alpha Balde, Tobias Kretzschmar
Phenology and time of flowering are crucial determinants of rice adaptation to climate variation. A previous study characterized flowering responses of 203 diverse indica rices (the ORYTAGE panel) to ten environments in Senegal (six sowing dates) and Madagascar (two years and two altitudes) under irrigation in the field. This study used the physiological phenology model RIDEV V2 to heuristically estimate component traits of flowering such as cardinal temperatures (base temperature (Tbase) and optimum temperature), basic vegetative phase, photoperiod sensitivity and cold acclimation, and to conduct a genome-wide association study for these traits using 16 232 anonymous single-nucleotide polymorphism (SNP) markers...
July 10, 2017: Journal of Experimental Botany
https://www.readbyqxmd.com/read/28922773/crop-model-assisted-phenomics-and-genome-wide-association-study-for-climate-adaptation-of-indica-rice-2-thermal-stress-and-spikelet-sterility
#4
Michael Dingkuhn, Richard Pasco, Julie Mae Pasuquin, Jean Damo, Jean-Christophe Soulié, Louis-Marie Raboin, Julie Dusserre, Abdoulaye Sow, Baboucarr Manneh, Suchit Shrestha, Tobias Kretzschmar
Low night and high day temperatures during sensitive reproductive stages cause spikelet sterility in rice. Phenotyping of tolerance traits in the field is difficult because of temporal interactions with phenology and organ temperature differing from ambient. Physiological models can be used to separate these effects. A 203-accession indica rice diversity panel was phenotyped for sterility in ten environments in Senegal and Madagascar and climate data were recorded. Here we report on sterility responses while a companion study reported on phenology...
July 10, 2017: Journal of Experimental Botany
https://www.readbyqxmd.com/read/28922352/60-years-ago-francis-crick-changed-the-logic-of-biology
#5
Matthew Cobb
In September 1957, Francis Crick gave a lecture in which he outlined key ideas about gene function, in particular what he called the central dogma. These ideas still frame how we understand life. This essay explores the concepts he developed in this influential lecture, including his prediction that we would study evolution by comparing sequences.
September 2017: PLoS Biology
https://www.readbyqxmd.com/read/28921981/the-use-of-cyclopentadienone-iron-tricarbonyl-complexes-for-c-n-bond-formation-reactions-between-amines-and-alcohols
#6
Thomas J Brown, Madeleine Cumbes, Louis J Diorazio, Guy J Clarkson, Martin Wills
The application of a series of (cyclopentadienone)iron tricarbonyl complexes to 'borrowing hydrogen' reactions between amines and alcohols was completed in order to assess their catalytic activity. The electronic variation of the aromatic groups flanking the C=O of the cyclopentadienone influenced the efficiency of the reactions, however in other cases the Knölker catalyst 1, containing trimethylsilyl groups flanking the cyclopentadienone ketone, gave the best results. In some cases, the change of the ratio of amine to alcohol improves the conversion significantly...
September 18, 2017: Journal of Organic Chemistry
https://www.readbyqxmd.com/read/28921878/simplifying-sampling-for-african-swine-fever-surveillance-assessment-of-antibody-and-pathogen-detection-from-blood-swabs
#7
J Carlson, L Zani, T Schwaiger, I Nurmoja, A Viltrop, A Vilem, M Beer, S Blome
African swine fever (ASF) is a notifiable disease with serious socio-economic consequences that has been present in wild boar in the Baltic States and Poland since 2014. An introduction of ASF is usually accompanied by increased mortality, making fallen wild boar and hunted animals with signs of disease the main target for early warning and passive surveillance. It is difficult, however, to encourage hunters and foresters to report and take samples from these cases. A pragmatic and easy sampling approach with quick-drying swabs could facilitate this...
September 17, 2017: Transboundary and Emerging Diseases
https://www.readbyqxmd.com/read/28921621/-but-we-want-to-work-the-movement-of-child-workers-in-peru-and-the-actions-for-reducing-child-labor
#8
Isidro Maya Jariego
The program Edúcame Primero (Educate Me First) is an evidence-based practice for eradicating child labor that has been applied with positive results in Colombia, Peru, and several Central American countries. In this article, we describe the difficulties of implementing the program in two poor areas of Lima (Peru) between 2014 and 2016. Specifically, we discuss three ethical challenges faced during the implementation of the program: (a) the existence of a movement of working children that defends the right of children to work; (b) the polarization of some community-based associations and government institutions on how to deal with the problems of working children; and (c) the use of network indicators in the evaluation of the community's level of cohesion...
September 18, 2017: American Journal of Community Psychology
https://www.readbyqxmd.com/read/28921564/machine-specific-quality-assurance-procedure-for-stereotactic-treatments-with-dynamic-couch-rotations
#9
Byron Wilson, Ermias Gete
OBJECTIVE: We present a method in which the treatment couch's accuracy is measured using the electronic portal imaging device (EPID) and a phantom of our own construction. Using this phantom, we were able to quantify the treatment couch walkout, and the rotation angle accuracy for both static and dynamic couch treatments. These measurements were used to provide an accurate measure of the treatment couch isocentre as well as to verify the couch rotation angle recorded in the trajectory log...
September 18, 2017: Medical Physics
https://www.readbyqxmd.com/read/28921555/improved-performance-of-pseudomonas-putida-in-a-bioelectrochemical-system-through-overexpression-of-periplasmic-glucose-dehydrogenase
#10
Shiqin Yu, Bin Lai, Manuel R Plan, Mark P Hodson, Endah A Lestari, Hao Song, Jens O Krömer
It was recently demonstrated that a bioelectrochemical system (BES) with a redox mediator allowed Pseudomonas putida to perform anoxic metabolism, converting sugar to sugar acids with high yield. However, the low productivity currently limits the application of this technology. To improve productivity the strain was optimized through improved expression of glucose dehydrogenase (GCD) and gluconate dehydrogenase (GAD). In addition, quantitative real-time RT-PCR analysis revealed the intrinsic self-regulation of GCD and GAD...
September 18, 2017: Biotechnology and Bioengineering
https://www.readbyqxmd.com/read/28920980/glaser-hay-hetero-coupling-in-a-bimetallic-regime-a-ni-ii-ag-i-assisted-base-ligand-and-additive-free-route-to-selective-unsymmetrical-1-3-diynes
#11
Anuradha Mohanty, Sujit Roy
A Ni(OAc)2/Ag(OTf) catalysed coupling of aryl alkynes and propargylic alcohol/ether/ester gave the corresponding unsymmetrical 1,3-diynes in good to excellent yields. The reaction does not require bases, ligands or additives and shows excellent hetero-selectivity, thereby addressing the current challenges in the field of coupling of two different terminal alkynes.
September 18, 2017: Chemical Communications: Chem Comm
https://www.readbyqxmd.com/read/28920159/integrating-referral-to-community-based-cancer-information-and-support-services-in-a-hospital-setting
#12
David J T Marco, Anna G Boltong, Adrian Dabscheck, Georgina Akers, Michelle Pryce, Victoria M White
PURPOSE: To implement and evaluate a hospital-based referral mechanism to increase patient uptake of community-based cancer information and support services. Feasibility and acceptability of the intervention and education program was evaluated. Changes in usage of Cancer Council Victoria's cancer information and support telephone line were investigated. METHODS: A 6-month study was conducted in one metropolitan and one regional cancer treatment hospital. Clinicians attended an education session regarding referral mechanisms to Cancer Council support services...
September 17, 2017: Supportive Care in Cancer: Official Journal of the Multinational Association of Supportive Care in Cancer
https://www.readbyqxmd.com/read/28919923/revealing-topics-and-their-evolution-in-biomedical-literature-using-bio-dtm-a-case-study-of-ginseng
#13
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
https://www.readbyqxmd.com/read/28918998/convex-bone-deformity-after-closed-reduction-of-nasal-bone-fracture
#14
Hiroshi Nishioka, Shoji Kondoh, Shunsuke Yuzuriha
BACKGROUND: Nasal fracture is the most common type of facial fracture treated by plastic surgeons. Here, we clarify the postoperative deformities that frequently remain after closed reduction of fresh nasal bone fracture by three-dimensional computed tomography (3D-CT). METHODS: Hundred consecutive cases of fresh nasal bone fracture in patients treated between May 2010 and January 2016 were examined. After closed reduction, the overall appearance of the arch formed by the nasal bone and maxillary process was evaluated as 'Excellent', 'Good' or 'Fair'...
August 24, 2017: Journal of Plastic, Reconstructive & Aesthetic Surgery: JPRAS
https://www.readbyqxmd.com/read/28918355/gallium-iii-chelates-of-mixed-phosphonate-carboxylate-triazamacrocyclic-ligands-relevant-to-nuclear-medicine-structural-stability-and-in-vivo-studies
#15
Maria I M Prata, João P André, Zoltán Kovács, Anett I Takács, Gyula Tircsó, Imre Tóth, Carlos F G C Geraldes
Three triaza macrocyclic ligands, H6NOTP (1,4,7-triazacyclononane-N,N',N″-trimethylene phosphonic acid), H4NO2AP (1,4,7-triazacyclononane-N-methylenephosphonic acid-N',N″-dimethylenecarboxylic acid), and H5NOA2P (1,4,7-triazacyclononane-N,N'-bis(methylenephosphonic acid)-N″-methylene carboxylic acid), and their gallium(III) chelates were studied in view of their potential interest as scintigraphic and PET (Positron Emission Tomography) imaging agents. A (1)H, (31)P and (71)Ga multinuclear NMR study gave an insight on the structure, internal dynamics and stability of the chelates in aqueous solution...
September 1, 2017: Journal of Inorganic Biochemistry
https://www.readbyqxmd.com/read/28918319/determination-of-chlorogenic-acids-and-caffeine-in-homemade-brewed-coffee-prepared-under-various-conditions
#16
Jong-Sup Jeon, Han-Taek Kim, Il-Hyung Jeong, Se-Ra Hong, Moon-Seog Oh, Kwang-Hee Park, Jae-Han Shim, A M Abd El-Aty
Coffee, a complex mixture of more than 800 volatile compounds, is one of the most valuable commodity in the world, whereas caffeine and chlorogenic acids (CGAs) are the most common compounds. CGAs are mainly composed of caffeoylquinic acids (CQAs), dicaffeoylquinic acids (diCQAs), and feruloylquinic acids (FQAs). The major CGAs in coffee are neochlorogenic acid (3-CQA), cryptochlorogenic acid (4-CQA), and chlorogenic acid (5-CQA). Many studies have shown that it is possible to separate the isomers of FQAs by high-performance liquid chromatography (HPLC)...
August 31, 2017: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/28918245/biodiesel-production-from-lipid-of-carbon-dioxide-sequestrating-bacterium-and-lipase-of-psychrotolerant-pseudomonas-sp-istpl3-immobilized-on-biochar
#17
Khushboo Khosla, Rashmi Rathour, Raj Maurya, Neha Maheshwari, Edgard Gnansounou, Christian Larroche, Indu Shekhar Thakur
An extracellular lipase was purified and characterized from psychrotolerant bacterium Pseudomonas sp. ISTPL3 isolated from Pangong lake. Lipase was purified by sequential methods of ammonium sulphate precipitation, dialysis, DEAE-cellulose ion exchange chromatography and Sephadex G-100 gel filtration chromatography, resulting in a purification fold of 6.53 and yield of 5.45%. The molecular weight was approximately 31kDa. The purified lipase was used for transesterification of lipids produced by oleaginous chemolithotrophic bacterium Serratia sp...
September 1, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28917931/extraction-of-soluble-arabinoxylan-from-enzymatically-pretreated-wheat-bran-and-production-of-short-xylo-oligosaccharides-and-arabinoxylo-oligosaccharides-from-arabinoxylan-by-glycoside-hydrolase-family-10-and-11-endoxylanases
#18
Sindhu Mathew, Eva Nordberg Karlsson, Patrick Adlercreutz
The enzymatic, ecofriendly pretreatment of wheat bran with α-amylase from Bacillus amyloliquifaciens or B. licheniformis at 90°C for 1.5h followed by Neutrase at 50°C for 4h, aqueous liquefaction at 121°C for 15h and ethanol precipitation enabled the production of soluble arabinoxylan (AX) with purity of 70.9% and 68.4% (w/w) respectively. Process alternatives tried, to simplify the process and curtail the cost resulted in AX products with different purities, yields and arabinose to xylose ratio (A/X). Among the two glycoside hydrolase (GH) family endoxylanases evaluated, GH10 family hydrolysed soluble AX more efficiently with xylanase from Geobacillus stearothermophilus T-6 (GsXyn10A) producing maximum amount of quantifiable short xylo-oligosaccharides (XOS) and arabinoxylo-oligosaccharides (AXOS) (53% w/w) followed by the catalytic module of Rhodothermus marinus Xyn10A (RmXyn10A-CM) with 37% (w/w) conversion...
September 13, 2017: Journal of Biotechnology
https://www.readbyqxmd.com/read/28917877/effects-of-hydrothermal-alkali-and-freezing-thawing-pre-treatments-on-modification-of-corn-starch-with-octenyl-succinic-anhydride
#19
Shujun Wang, Tiangui Li, Shuo Wang, Les Copeland
Pre-treatments by freezing/thawing (F/T) and hydrothermal-alkali (HA) were used in the modification of starch with octenyl succinic anhydride (OSA). In comparison with OSA-modified starch prepared without pre-treatment (degree of substitution, DS=0.0172; reaction efficiency, RE=73.9%), HA pre-treatment increased the DS of OSA-starch and RE of subsequent OSA modification (0.0185 and 79.7%, respectively). In contrast, F/T pre-treatment gave the opposite results (0.0152 and 65.5%, respectively). OSA modification markedly increased the viscosities but decreased the gelatinization parameters of native starch...
November 1, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28917728/fast-method-for-the-simultaneous-determination-of-monomethylmercury-and-inorganic-mercury-in-rice-and-aquatic-plants
#20
María Jiménez-Moreno, Miguel Ángel Lominchar, María José Sierra, Rocío Millán, Rosa Carmen Rodríguez Martín-Doimeadios
Recent investigations revealed that monomethylmercury (MMHg) can be absorbed and accumulated by plants, i.e. rice crops, thus becoming an important route of human exposure to MMHg through diet. The increasing concern about this fact makes that appropriate analytical methods for Hg speciation in these samples are urgently required. Therefore, the aim of this work has been the development of a fast and sensitive method which enables the simultaneous determination of MMHg and inorganic Hg in rice and aquatic plants...
January 1, 2018: Talanta
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