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Thematische Bibliographien / Laboratorní manipulace / Zeitschriftenartikel

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Zeitschriftenartikel zum Thema „Laboratorní manipulace“

Autor: Grafiati

Veröffentlicht am 28. Juni 2021

Zuletzt aktualisiert am 4. Februar 2022

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1

Assis Neto, A. C., F. T. Verechia, C. E. Ambrosio, et al. "119 EARLY BOVINE GESTATIONAL DEVELOPMENT: MANIPULATED (IVF) AND NOT MANIPULATED IN LABORATORY." Reproduction, Fertility and Development 18, no. 2 (2006): 168. http://dx.doi.org/10.1071/rdv18n2ab119.

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High embryonic and fetal death rates in manipulated embryos in laboratory suggest that the process of early placentation can be inefficient. This investigation aimed to evaluate the development of placenta, and organogenesis of Nelore bovine embryos, and fetuses by natural stud and in vitro fertilization (IVF) over the period from 15 to 70 days of pregnancy. Fifty-nine embryos (15 to 50 days of gestation), 9 fetuses in initial period (60 to 70 days of gestation), and 10 embryos originated by IVF technique (35 to 46 days of gestation) were used. The same semen was used for all IVF, except the e

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Pruitt, Dean. "Field Experiments on Social Conflict." International Negotiation 10, no. 1 (2005): 33–50. http://dx.doi.org/10.1163/1571806054741173.

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AbstractField experiments, in which the researcher manipulates one or more variables in a naturally occurring setting, have sometimes been used in studies of social conflict and should probably be used more often. They are more useful than observational studies for assessing the impact of novel conditions, establishing cause and effect, and reducing confounding. And they are more useful than laboratory experiments for examining long-term effects and those that involve strong passions, and for establishing external validity. However field experiments also have their limitations. Some variables

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Whitelock, Victoria, and Eric Robinson. "Remembered Meal Satisfaction, Satiety, and Later Snack Food Intake: A Laboratory Study." Nutrients 10, no. 12 (2018): 1883. http://dx.doi.org/10.3390/nu10121883.

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It is well established that the satiety providing effects of food can influence meal size and a disparate area of research suggests that memory regarding recent eating informs food intake. Here we examined whether remembered meal satisfaction (encompassing memory for meal liking and satiety) can be manipulated in the laboratory and whether this influences later food intake. Participants (N = 128, body mass index mean = 23.46kg/m2, standard deviation = 4.70) consumed a fixed lunch and then rehearsed the satisfying or dissatisfying aspects of the meal, or a neutral experience (control), in order

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Du, Weiguo, Jonathan K. Webb, and Richard Shine. "Heat, sight and scent: multiple cues influence foraging site selection by an ambush-foraging snake Hoplocephalus bungaroides (Elapidae)." Current Zoology 55, no. 4 (2009): 266–71. http://dx.doi.org/10.1093/czoolo/55.4.266.

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Abstract Most mobile organisms respond to multiple cues when selecting habitat types, and laboratory experiments that manipulate only single cues may fail to reveal the true complexity of habitat-selection behaviour. In south- eastern Australia, broad headed snakes Hoplocephalus bungaroides (Elapidae) lie in wait under sun-warmed rocks to ambush velvet geckos Oedura leseuerii (Gekkonidae). Previous laboratory work has shown that both the geckos and the snakes actively select hotter rather than colder rocks, and that the snakes actively select rocks scented by geckos. We manipulated rock temper

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Homann, Peter S., and David F. Grigal. "Molecular Weight Distribution of Soluble Organics from Laboratory-Manipulated Surface Soils." Soil Science Society of America Journal 56, no. 4 (1992): 1305–10. http://dx.doi.org/10.2136/sssaj1992.03615995005600040049x.

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Dunbar, Maureen E., and John J. Wysolmerski. "Mammary ductal and alveolar development: Lesson learned from genetically manipulated mice." Microscopy Research and Technique 52, no. 2 (2001): 163–70. http://dx.doi.org/10.1002/1097-0029(20010115)52:2<163::aid-jemt1002>3.0.co;2-r.

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Oberst, Sebastian, Michael Lenz, Joseph C. S. Lai, and Theodore A. Evans. "Termites manipulate moisture content of wood to maximize foraging resources." Biology Letters 15, no. 7 (2019): 20190365. http://dx.doi.org/10.1098/rsbl.2019.0365.

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Animals use cues to find their food, in microhabitats within their physiological tolerances. Termites build and modify their microhabitat, to transform hostile environments into benign ones, which raises questions about the relative importance of cues. Termites are desiccation intolerant and foraging termites are attracted to water, so most research has considered moisture to be a cue. However, termites can also transport water to food, and so moisture may play other roles than previously considered. To examine the role of moisture, we compared Coptotermes acinaciformis termite foraging decisi

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Andersen, David J., and Tessa Ditonto. "Information and its Presentation: Treatment Effects in Low-Information vs. High-Information Experiments." Political Analysis 26, no. 4 (2018): 379–98. http://dx.doi.org/10.1017/pan.2018.21.

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This article examines how the presentation of information during a laboratory experiment can alter a study’s findings. We compare four possible ways to present information about hypothetical candidates in a laboratory experiment. First, we manipulate whether subjects experience a low-information or a high-information campaign. Second, we manipulate whether the information is presented statically or dynamically. We find that the design of a study can produce very different conclusions. Using candidate’s gender as our manipulation, we find significant effects on a variety of candidate evaluation

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Pittenger, David J. "Perception Laboratory: A Computer Program to Demonstrate Perceptual Phenomena." Teaching of Psychology 23, no. 1 (1996): 46–48. http://dx.doi.org/10.1207/s15328023top2301_12.

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I developed an interactive computer program that allows one to demonstrate and experiment with various phenomena in visual perception using IBM-compatible computers. The program contains modules for demonstrating the color afterimage, the cafe illusion, additive color mixing and the opponent-process theory of color vision, the glowing axes illusion, the Hermann grid, the McCollough effect, the motion aftereffect, the neon illusion, and simultaneous contrast. The user has considerable control over the stimuli making up the image and can manipulate the variables that contribute to the perception

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Simmons, Mike, Sharon Daniel, and Mark Temple. "How to manipulate friends and influence practice: Application of complexity science leads to quality improvement in laboratory sample submissions." Journal of Infection Prevention 20, no. 2 (2019): 91–98. http://dx.doi.org/10.1177/1757177419831348.

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Background: We sought to reduce healthcare-associated infections (HCAIs) through the application of complexity science. Objective: To confirm incidental findings that altering the structure of microbiology reports with targeted education led to better utilisation of laboratory resources, while participating in efforts to reduce HCAI. Methods: We adopted a different approach to laboratory result authorisation, using narrative to engage the clinicians and induce behavioural change. Subsequent educational opportunities emphasised key messages. Findings/Results: Positive urine means calculated by

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Al-Ubaydli, Omar, and John A. List. "Do Natural Field Experiments Afford Researchers More or Less Control than Laboratory Experiments?" American Economic Review 105, no. 5 (2015): 462–66. http://dx.doi.org/10.1257/aer.p20151013.

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A commonly held view is that laboratory experiments provide researchers with more “control” than natural field experiments. This paper explores how natural field experiments can provide researchers with more control than laboratory experiments. While laboratory experiments provide researchers with a high degree of control in the environment which participants agree to be experimental subjects, when participants systematically opt out of laboratory experiments, the researcher's ability to manipulate certain variables is limited. In contrast, natural field experiments bypass the participation de

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Hermawan, Yulius Deddy. "Design of Flow Control System with A Kickback Flow as A Manipulated Variable." Eksergi 14, no. 2 (2017): 23. http://dx.doi.org/10.31315/e.v14i2.2089.

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The open loop experiment of water flow dynamic in pipe has been done in laboratory. Pump was used to flow water in pipe. Part of liquid from discard of pump was recycled back to the suction of pump (kickback) and adjusted to control the liquid flow to the next process. The open loop laboratory experiment produced the steady state parameters; they were discard flowrate =16.6 [L/min], kickback flowrate =5.8 [L/min], and liquid flowrate to the next process =10.8 [L/min]. These steady state parameters were then used as the initial value for closed loop simulation with computer programming. This st

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Esposito, Raffaela, Ilaria Lusini, Kristýna Večeřová, et al. "Shoot-level terpenoids emission in Norway spruce ( Picea abies ) under natural field and manipulated laboratory conditions." Plant Physiology and Biochemistry 108 (November 2016): 530–38. http://dx.doi.org/10.1016/j.plaphy.2016.08.019.

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Coutteau, Peter, Luc Brendonck, Patrick Lavens, and Patrick Sorgeloos. "The use of manipulated baker's yeast as an algal substitute for the laboratory culture of Anostraca." Hydrobiologia 234, no. 1 (1992): 25–32. http://dx.doi.org/10.1007/bf00010776.

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Hui, Chun, Dennis W. Organ, and Karen Crooker. "Time Pressure, Type a Syndrome, and Organizational Citizenship Behavior: A Laboratory Experiment." Psychological Reports 75, no. 1 (1994): 199–208. http://dx.doi.org/10.2466/pr0.1994.75.1.199.

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Time pressure was manipulated in a laboratory task for 77 undergraduate subjects, who also responded to a measure of Type A syndrome. Afterwards, an occasion for organizational citizenship behavior was presented in the form of participation in a survey. Type A scores were unrelated to those on any measure of organizational citizenship behavior; time pressure acted to depress especially the quality of organizational citizenship behavior.

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Porta, Angela R., and Edward Enners. "Determining Annealing Temperatures for Polymerase Chain Reaction." American Biology Teacher 74, no. 4 (2012): 256–60. http://dx.doi.org/10.1525/abt.2012.74.4.9.

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The polymerase chain reaction (PCR) is a common technique used in high school and undergraduate science teaching. Students often do not fully comprehend the underlying principles of the technique and how optimization of the protocol affects the outcome and analysis. In this molecular biology laboratory, students learn the steps of PCR with an emphasis on primer composition and annealing temperature, which they manipulate to test the effect on successful DNA amplification. Students design experiments to test their hypotheses, promoting a discovery-based approach to laboratory teaching and devel

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Llerena Cano, Guillermo. "Retrospectiva de la tecnología de laboratorio en reproducción asistida." Revista Peruana de Ginecología y Obstetricia 57, no. 1 (2015): 8–12. http://dx.doi.org/10.31403/rpgo.v57i198.

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Se revisa la secuencia evolutiva de la tecnología de laboratorio en reproducción asistida. Desde los primeros intentos de manipular embriones preimplantacionales recuperados de oviductos animales, en 1912, las transferencias directas o con breves periodos de incubación a madres receptoras, el complejo proceso bioquímico de preparación y suplementación de los medios de cultivo a partir de soluciones salinas químicamente definidas, la etapa de transición de esta tecnología a los humanos en la que se trabajo básicamente la maduración de ovocitos y la selección de espermatozoides motiles in vitro,

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Schlagintweit, Hera E., Robin N. Perry, Christine Darredeau, and Sean P. Barrett. "Non-pharmacological Considerations in Human Research of Nicotine and Tobacco Effects: A Review." Nicotine & Tobacco Research 22, no. 8 (2019): 1260–66. http://dx.doi.org/10.1093/ntr/ntz064.

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Abstract Human research of nicotine and tobacco effects demonstrates that non-pharmacological factors may systematically affect responses to administered substances and inert placebos. Failure to measure or manipulate these factors may compromise study reliability and validity. This is especially relevant for double-blind placebo-controlled research of nicotine, tobacco, and related substances. In this article, we review laboratory-based human research of the impact of non-pharmacological factors on responses to tobacco and nicotine administration. Results suggest that varying beliefs about dr

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ANUKUL, PREEYANUCH, SOMWANG KHANTAYANUWONG, and PHICHIT SOMBOON. "Development of laboratory wet creping method to evaluate and control pulp quality for tissue." May 2015 14, no. 5 (2015): 339–45. http://dx.doi.org/10.32964/tj14.5.339.

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The required properties of tissue paper including softness and liquid absorption are predominantly manipulated by the creping process, which cannot be simply produced in the laboratory. This causes problems in controlling the stock quality prepared using the various types of industrial pulps and consequently affects the creping operation and tissue quality. Our objectives were to develop a laboratory creping method and to apply it for the evaluation and control of the quality of pulp raw materials used in industrial tissue production. The experiment consisted of the development of a laboratory

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Pang, Raina D., Mariel S. Bello, Madalyn M. Liautaud, Andrea H. Weinberger, and Adam M. Leventhal. "Gender Differences in Negative Affect During Acute Tobacco Abstinence Differ Between African American and White Adult Cigarette Smokers." Nicotine & Tobacco Research 21, no. 8 (2018): 1072–78. http://dx.doi.org/10.1093/ntr/nty122.

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Abstract Introduction Prior studies have found heightened negative affect following tobacco abstinence in women compared to men. However, experimental work addressing whether these findings generalize across racial groups is scarce. This study investigated whether race (non-Hispanic White vs. non-Hispanic African American) moderated gender differences in abstinence-induced negative affect and smoking behavior. Methods Data were collected from 2010 to 2017 from two separate laboratory studies investigating experimentally manipulated tobacco abstinence. Following a baseline session, adult daily

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Nittérus, Karolina, Åsa Gunnarsson, and Bengt Gunnarsson. "Manipulated structural variability affects the habitat choice of two ground-living beetle species in a laboratory experiment." Entomologica Fennica 19, no. 2 (2008): 122–28. http://dx.doi.org/10.33338/ef.84423.

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The habitat choice of two ground-living carabid beetle species (Pterostichus oblongopunctatus (Fabricius) and Carabus hortensis Linneaus) was investigated in a laboratory experiment. Beetles were released in test arenas with two options of manipulated structural variability on the ground, i.e.; bare ground spots versus spots with logging residue (slash). Beetles were studied for 600 seconds and the total time spent on bare ground versus in slash was measured. The results revealed a preference for slash covered ground amongst the investigated beetles. Regardless of species or type of release sp

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Seppala, Maisa, Finn Geoghegan, Guilherme Xavier, and Martyn T. Cobourne. "Using the mouse to understand the molecular basis of human craniofacial disorders." Faculty Dental Journal 2, no. 4 (2011): 196–202. http://dx.doi.org/10.1308/204268511x13154691747210.

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At first glance the humble mouse might seem an odd choice as a model for studying complex human craniofacial disorders. However, similarities in embryonic development and genome organisation, and our ability to manipulate its genes have made this species the model of choice for investigating human development. Here we describe some examples from our own laboratory of mouse models that are providing insight into the mechanisms underlying two human craniofacial syndromes.

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DI CICCA, GAETANO MARIA, GAETANO IUSO, PIER GIORGIO SPAZZINI, and MICHELE ONORATO. "Particle image velocimetry investigation of a turbulent boundary layer manipulated by spanwise wall oscillations." Journal of Fluid Mechanics 467 (September 24, 2002): 41–56. http://dx.doi.org/10.1017/s002211200200157x.

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Particle image velocimetry has been applied to the study of a canonical turbulent boundary layer and to a turbulent boundary layer forced by transversal wall oscillations. This work is part of the research programme at the Politecnico di Torino aerodynamic laboratory with the objective of investigating the response of near-wall turbulence to external perturbations. Results are presented for the optimum oscillation period of 100 viscous time units and for an oscillation amplitude of 320 viscous units. As expected, turbulent velocity fluctuations are considerably reduced by the wall oscillations

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Meisel, David D., Kenneth F. Kinsey, and Charles H. Recchia. "Microcomputers in an Introductory College Astronomy Laboratory: A Software Development Project." International Astronomical Union Colloquium 105 (1990): 175–76. http://dx.doi.org/10.1017/s0252921100086656.

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We have developed software for the Apple IIe series of microcomputers for use in labs in an introductory astronomy course. This software emphasizes a toolkit approach to data analysis; it has been class tested with over 170 students and was a resounding success as a replacement for previously used graphical approximations. A unique feature of this software is the incorporation of image-processing techniques into a course designed for non-science majors.The five software packages are:(a)Datasheet - A six-column spreadsheet with columnwise operations, statistical functions, and double-high-resol

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Giusti, Giovanni, and Roberto Dopeso-Fernández. "Incentive magnitude and reference point shifting: a laboratory experiment." International Journal of Manpower 41, no. 8 (2020): 1157–77. http://dx.doi.org/10.1108/ijm-09-2019-0428.

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PurposeThis paper analyzes how different dynamics of changes in piece-rate incentives affect individuals' exerted effort.Design/methodology/approachThe authors constructed an across-subjects three-period laboratory setting where, for each period, they exogenously manipulate the amount of piece-rate incentive paid for correct answer. The same experimental conditions were separately applied to two different laboratory tasks, one boring and the other entertaining.FindingsIt was found that performance contingent incentives affect participants' effort provision, while the effect is task dependent a

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Easton, D. M. "Simple, inexpensive suction electrode system for the student physiology laboratory." Advances in Physiology Education 265, no. 6 (1993): S35. http://dx.doi.org/10.1152/advances.1993.265.6.s35.

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A versatile, inexpensive, easily constructed suction electrode system is described that can be used for routine exercises by the student on, or for demonstrations of, the electrophysiology of frog sciatic nerve and gastrocnemius and sartorius muscles. A disposable plastic syringe and a disposable pipette with Ag-AgCl wire comprise the suction electrode. Six readily manipulable electrodes are installed in the walls of the Plexiglas preparation bath, and an arbitrary number of additional "free" electrodes can be placed where desired. An optional small chamber, formed from a disposable plastic cu

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Criscuolo, F., S. Smith, S. Zahn, B. J. Heidinger, and M. F. Haussmann. "Experimental manipulation of telomere length: does it reveal a corner-stone role for telomerase in the natural variability of individual fitness?" Philosophical Transactions of the Royal Society B: Biological Sciences 373, no. 1741 (2018): 20160440. http://dx.doi.org/10.1098/rstb.2016.0440.

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Telomeres, the non-coding ends of linear chromosomes, are thought to be an important mechanism of individual variability in performance. Research suggests that longer telomeres are indicative of better health and increased fitness; however, many of these data are correlational and whether these effects are causal are poorly understood. Experimental tests are emerging in medical and laboratory-based studies, but these types of experiments are rare in natural populations, which precludes conclusions at an evolutionary level. At the crossroads between telomere length and fitness is telomerase, an

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Riascos, Roy, Diego Aldana, Miguel Ruiz, and Francisco Villa. "Técnicas histológicas aplicadas a la docencia en morfología." Revista Repertorio de Medicina y Cirugía 10, no. 1 (2001): 23–26. http://dx.doi.org/10.31260/repertmedcir.v10.n1.2001.241.

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Se presenta la descripción de una técnica utilizada en histología como lo es la parafinización, aplicada a conservación de piezas de morfología macroscópica. Esta técnica utiliza materiales que se encuentran en cualquier laboratorio de histología, obteniendo como resultado piezas que se pueden manipular sin guantes y sin las desventajas del formol.

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Vaughn, Charlotte, and Tyler Kendall. "Stylistically coherent variants: Cognitive representation of social meaning / Variantes estilisticamente coerentes: representação cognitiva de significados sociais." REVISTA DE ESTUDOS DA LINGUAGEM 27, no. 4 (2019): 1787. http://dx.doi.org/10.17851/2237-2083.0.0.1787-1830.

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Abstract: The perception of social meanings and styles is dependent upon the contributions of a constellation of multiple covarying sociolinguistic variants. This suggests that listeners maintain associations between stylistically coherent variants and their social meanings in mental representation. The present paper expands upon this notion, aiming to gain converging evidence from production as a way to explore the cognitive representations of variants and their social meanings more deeply. To do this, four American English speakers were asked to produce sentences containing (ING) words (as i

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Kinzler, PhD, Eric R., Carmela Pantaleon, BS, Matthew Iverson, MPH, and Stefan Aigner, MD. "In vitro evaluation of a novel immediate-release formulation of oxycodone (RoxyBond™) for the potential for abuse via injection." Journal of Opioid Management 16, no. 5 (2020): 383–90. http://dx.doi.org/10.5055/jom.2020.0593.

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Objective: Immediate-release (IR) oxycodone formulations may be manipulated for nonoral routes of administration. Oxycodone abuse-resistant immediate-release (ARIR) is a novel abuse-deterrent formulation (ADF) of IR oxycodone. This study aimed to assess the intravenous (IV) abuse potential of Oxycodone ARIR relative to commercially available IR oxycodone tablets using in vitro laboratory studies.Design: Intact or manipulated tablets were incubated in 5 or 10 mL of room temperature water for increasing amounts of time. For each timepoint, syringeability, defined as the ability to draw up water-

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Wang, Shih-Hao, Chung-Lin Tsai, and Han-Chao Chang. "Laboratory Environmental Conditions Influence Patent Inventors’ Creative Self-efficacy." International Business Research 11, no. 5 (2018): 159. http://dx.doi.org/10.5539/ibr.v11n5p159.

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A comfortable experimental environment usually enables stress relief among inventors, allowing them to focus on inventing. However, to facilitate smooth and continuous experimental procedures, the public spaces and computing environments of conventional laboratories are usually replete with heavy instruments and interconnected wires; consequently, inventors have limited space to conduct complex experiments. These public spaces and computing environments negatively affect the creative self-efficacy (CSE) of inventors. Based on CSE theory and modified information layout complexity theory, in thi

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Anderson, R. A. "Fertility preservation techniques: laboratory and clinical progress and current issues." REPRODUCTION 136, no. 6 (2008): 667–69. http://dx.doi.org/10.1530/rep-08-0270.

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Human fertility is dependent on maturation of germ cells through meiosis and their association with supporting cells, which in the female are also the source of sex steroids. These processes are sensitive to both chemotherapy and radiotherapy thus can be damaged by anti-cancer treatments. The uterus is also sensitive to radiotherapy. Our understanding of and the ability to manipulate fertility has increased together with survival rates from many cancers, particularly those affecting children, younger men, and women. The growth of interest in fertility preservation for cancer patients is a natu

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Miller, R. J., and J. T. Addison. "Trapping interactions of crabs and American lobster in laboratory tanks." Canadian Journal of Fisheries and Aquatic Sciences 52, no. 2 (1995): 315–24. http://dx.doi.org/10.1139/f95-032.

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The relationship between trap catches of decapods and their abundance is not well established. Because it is difficult to manipulate density in the field, laboratory tanks were used to examine 10 hypotheses about the intra- and interspecific interactions of rock crab (Cancer irroratus), green crab (Carcinus maenas), and American lobster (Homarus americanus). The proportion of rock crabs captured did not differ among high, medium, and low densities, but the proportion captured was reduced at high densities for both green crabs and lobsters. Additional experiments demonstrated that large green a

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Grinbaum, Renato Satovschi, Thaís Guimarães, Elisa Kusano, Nair Hosino, Helio Sader, and Rosangela Ferraz Cereda. "A Pseudo-Outbreak of Vancomycin-ResistantEnterococcus faecium." Infection Control & Hospital Epidemiology 24, no. 6 (2003): 461–64. http://dx.doi.org/10.1086/502235.

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AbstractFive VRE isolates were reported from sterile samples. No infections were diagnosed among the patients, who were on different wards. PFGE showed that all five isolates were clonal. All samples were manipulated by the same worker, but the source could not be found. Contamination was probably related to manipulation of a source specimen in the laboratory.

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Haney, Justin M., Mary Owczarczak, Clive D’Souza, Monica L. H. Jones, and Matthew P. Reed. "A Pilot Study of the Effects of Pulley Location and Design Parameters on Hand Movements during Pulley Threading Operations." Proceedings of the Human Factors and Ergonomics Society Annual Meeting 60, no. 1 (2016): 908–12. http://dx.doi.org/10.1177/1541931213601208.

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Three healthy individuals participated in a laboratory experiment that required routing a thin continuous thread through a series of pulleys mounted on a vertical work surface. Task precision demand was manipulated by altering pulley outer diameter (38 mm, 76 mm, and 152 mm) and groove width (3 mm, 6 mm, and 9 mm). The target location of each destination pulley relative to the origin at the mid-sagittal plane was also manipulated. These factors were hypothesized to influence hand motion trajectories, peak speed, and task completion time. Smaller pulley diameters and larger groove widths, repre

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Houston, Stephanie. "Arkaitz Carracedo: If the scientific question is good, the result will be interesting." Journal of Experimental Medicine 216, no. 11 (2019): 2449–50. http://dx.doi.org/10.1084/jem.20191880.

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Arkaitz Carracedo is a principal investigator at the Association for Cooperative Research in Biosciences (CIC bioGUNE) in Spain; his laboratory focuses on signaling and metabolic alterations in cancer. Arkaitz has investigated the regulation of fatty acid oxidation in cancer cells and how these changes could be manipulated therapeutically. We chatted with Arkaitz to find out about his career in science so far.

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Wogalter, Michael S., Nancy A. McKenna, and Scott T. Allison. "Warning Compliance: Behavioral Effects of Cost and Consensus." Proceedings of the Human Factors Society Annual Meeting 32, no. 15 (1988): 901–4. http://dx.doi.org/10.1518/107118188786761785.

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Two laboratory experiments were conducted to examine the behavioral effects of cost and consensus on warning compliance. Subjects performed a chemistry demonstration task using a set of instructions that contained a warning directing them to wear a safety mask and gloves. In Experiment 1, cost was manipulated by locating the masks and gloves in either an accessible location (low cost) or a less accessible location (high cost). In Experiment 2, consensus was manipulated by the additional presence of a confederate subject who either did or did not comply with the warning. The results showed redu

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Arteaga Averos, Lenin, and Marcelo Ortíz Suárez. "Bioseguridad para el personal y laboratorio, asociado al manejo de muestras de casos para coronavirus (covid-19)." Pro Sciences: Revista de Producción, Ciencias e Investigación 4, no. 32 (2020): 34–46. http://dx.doi.org/10.29018/issn.2588-1000vol4iss32.2020pp34-46.

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El propósito de este documento es proporcionar orientación en bioseguridad para laboratorios (análisis clínico) y para el personal que manipula las muestras provenientes de personas con posible infección de coronavirus (COVID-19), de tal manera que facilite la información de consulta para la acreditación (opcional) con el SAE y obtención del permiso de funcionamiento (obligatorio) con el ACESS para el Laboratorio de Biología Molecular y Bioquímica de la Universidad Regional Amazónica Ikiam, como un laboratorio de ensayo clínico de dichas muestras, en apoyo al MSP por la emergencia sanitaria qu

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Ikhsan, Jaslin, Kristian Handoyo Sugiyarto, and Tiwi Nur Astuti. "Fostering Student’s Critical Thinking through a Virtual Reality Laboratory." International Journal of Interactive Mobile Technologies (iJIM) 14, no. 08 (2020): 183. http://dx.doi.org/10.3991/ijim.v14i08.13069.

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Virtual reality (VR) laboratory is great potential for education. It is recognized as a technological advance that can facilitate a learning process through the development of highly realistic 3D visualization. Using VR laboratory in teaching and learning makes it possible to manipulate objects in the virtual scene in a manner similar to the real world. Virtual reality laboratory was developed to enhance the students’ critical thinking skills. A Research and Development (R &amp; D) method with a post-test design was used in the research. The subjects included the students who were enrolled

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Wogalter, Michael S., Scott T. Allison, and Nancy A. Mckenna. "Effects of Cost and Social Influence on Warning Compliance." Human Factors: The Journal of the Human Factors and Ergonomics Society 31, no. 2 (1989): 133–40. http://dx.doi.org/10.1177/001872088903100202.

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The behavioral effects of cost and social influence on warning compliance were examined. Participants in several studies performed a chemistry laboratory task using a set of instructions that contained a warning directing them to wear a safety mask and gloves. Cost was manipulated by locating the masks and gloves in either an accessible location (low cost) or a less accessible location (high cost); social influence was manipulated by the presence of a confederate who either did or did not comply with the warning. The results showed reduced compliance with the warning when the cost was high and

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Chaplin, Susan B. "GUIDED DEVELOPMENT OF INDEPENDENT INQUIRY IN AN ANATOMY/PHYSIOLOGY LABORATORY." Advances in Physiology Education 27, no. 4 (2003): 230–40. http://dx.doi.org/10.1152/advan.00002.2003.

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Student-originated projects are increasingly utilized in the biology laboratory as a means of engaging students and revitalizing the laboratory experience by allowing them one to two weeks to collect data on a manipulated variable of their choice by use of an introduced technique. Such experiments fail as good models of investigative learning when they place more emphasis on novel ideas than on hypothesis testing, experimental design, statistical rigor, or use of the primary literature. In addition, students get used to the routine and tend to design the same type of simplistic experiments in

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Hafer, Nina, and Manfred Milinski. "Inter- and intraspecific conflicts between parasites over host manipulation." Proceedings of the Royal Society B: Biological Sciences 283, no. 1824 (2016): 20152870. http://dx.doi.org/10.1098/rspb.2015.2870.

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Host manipulation is a common strategy by which parasites alter the behaviour of their host to enhance their own fitness. In nature, hosts are usually infected by multiple parasites. This can result in a conflict over host manipulation. Studies of such a conflict in experimentally infected hosts are rare. The cestode Schistocephalus solidus (S) and the nematode Camallanus lacustris (C) use copepods as their first intermediate host. They need to grow for some time inside this host before they are infective and ready to be trophically transmitted to their subsequent fish host. Accordingly, not y

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Leary, Mark R., Jean M. Twenge, and Erin Quinlivan. "Interpersonal Rejection as a Determinant of Anger and Aggression." Personality and Social Psychology Review 10, no. 2 (2006): 111–32. http://dx.doi.org/10.1207/s15327957pspr1002_2.

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This article reviews the literature on the relationship between interpersonal rejection and aggression. Four bodies of research are summarized: laboratory experiments that manipulate rejection, rejection among adults in everyday life, rejection in childhood, and individual differences that may moderate the relationship. The theoretical mechanisms behind the effect are then explored. Possible explanations for why rejection leads to anger and aggression include: rejection as a source of pain, rejection as a source of frustration, rejection as a threat to self-esteem, mood improvementfollowing ag

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Ardi, Dennise Tanoko, Yue Gang Li, Kelvin Hau Kong Chan, Liam Blunt, and M. R. Bache. "The Role of Surface Topography on Fatigue Behaviour of Nickel Based Superalloys." Advanced Materials Research 891-892 (March 2014): 48–53. http://dx.doi.org/10.4028/www.scientific.net/amr.891-892.48.

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Advanced areal (three-dimensional) characterisation of surface topography was applied to laboratory scale fatigue test specimens manufactured from the nickel based superalloy Alloy720Li. Finishing was deliberately manipulated to offer four distinct grades of topography. Subsequent low cycle fatigue performance was then correlated to a range of parameters selected to represent the surface topography. The aim of the ongoing study is to predict fatigue performance and aid to establish correlations between topographic parameters and fatigue life.

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Montagnini, F., B. L. Haines, W. T. Swank, and J. B. Waide. "Nitrification in undisturbed mixed hardwoods and manipulated forests in the southern Appalachian Mountains of North Carolina, U.S.A." Canadian Journal of Forest Research 19, no. 10 (1989): 1226–34. http://dx.doi.org/10.1139/x89-187.

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This paper summarizes data on nitrification at the Coweeta Hydrologic Laboratory, in the southern Appalachian Mountains of North Carolina, U.S.A., focusing on effects of watershed treatment and vegetation type. At Coweeta, as at other United States sites, oak–hickory forests gave the lowest nitrification potentials. Nitrification potentials and nitrifier numbers were lower in oak–hickory forests of undisturbed watersheds than in disturbed watersheds. Nitrification potentials were also low in a white pine plantation, although higher than in other pine forests in the United States. In a regenera

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Yunda, Leonardo, Steve Rodriguez G., Luis Fernando Gómez, Oscar Jairo Maya, and Oscar Arnulfo Barrera. "Sistema de microscopía robotizada para diagnóstico y confirmación de diagnóstico a distancia." Ingenium 5, no. 10 (2011): 39. http://dx.doi.org/10.21774/ing.v5i10.48.

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El tratamiento de la malaria requiere del análisis de gota gruesa, un procedimiento de diagnóstico en laboratorio clínico que utiliza el microscopio para observar y caracterizar el tipo de parásito de malaria que afecta al paciente para formular los medicamentos específicos para combatirlo. La malaria está presente en el pacífico colombiano, una zona con baja infraestructura de salud, que debe recurrir a los servicios de telemedicina para apoyar los procedimientos de laboratorio clínico y obtener resultados oportunos y de calidad. El Laboratorio de Telemedicina e Ingeniería Biomédica de la USC

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Habibi, Saeid, Richard Burton, and Eric Sampson. "High Precision Hydrostatic Actuation Systems for Micro- and Nanomanipulation of Heavy Loads." Journal of Dynamic Systems, Measurement, and Control 128, no. 4 (2005): 778–87. http://dx.doi.org/10.1115/1.2229259.

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In this paper reports on an important finding, that is, hydrostatic actuation systems are able to manipulate heavy loads with submicron precision and a large stroke. In this relation, the design of a high-precision hydrostatic actuation system referred to as the ElectroHydraulic Actuator (EHA) is presented. A laboratory prototype of this system has achieved an unprecedented level of performance by being able to move a large load of 20Kg with a precision of 100nm and a stroke of 12cm. This level of performance places the hydrostatic actuation concept in competition with piezoelectric platforms

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Bibb, Mervyn J. "Understanding and manipulating antibiotic production in actinomycetes." Biochemical Society Transactions 41, no. 6 (2013): 1355–64. http://dx.doi.org/10.1042/bst20130214.

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Actinomycetes are prolific producers of natural products with a wide range of biological activities. Many of the compounds that they make (and derivatives thereof) are used extensively in medicine, most notably as clinically important antibiotics, and in agriculture. Moreover, these organisms remain a source of novel and potentially useful molecules, but maximizing their biosynthetic potential requires a better understanding of natural product biosynthesis. Recent developments in genome sequencing have greatly facilitated the identification of natural product biosynthetic gene clusters. In the

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Lynch, Gordon S., and René Koopman. "Overcoming nature’s paradox in skeletal muscle to optimise animal production." Animal Production Science 59, no. 11 (2019): 1957. http://dx.doi.org/10.1071/an19361.

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Nature’s paradox in skeletal muscle describes the seemingly mutually exclusive relationship between muscle fibre size and oxidative capacity. In mammals, there is a constraint on the size at which mitochondria-rich, high O2-dependent oxidative fibres can attain before they become anoxic or adapt to a glycolytic phenotype, being less reliant on O2. This implies that a muscle fibre can hypertrophy at the expense of its endurance capacity. Adaptations to activity (exercise) generally obey this relationship, with optimal muscle endurance generally being linked to an enhanced proportion of small, s

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Dennehy, John J., Nicholas A. Friedenberg, Yul W. Yang, and Paul E. Turner. "Bacteriophage Migration via Nematode Vectors: Host-Parasite-Consumer Interactions in Laboratory Microcosms." Applied and Environmental Microbiology 72, no. 3 (2006): 1974–79. http://dx.doi.org/10.1128/aem.72.3.1974-1979.2006.

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ABSTRACT Pathogens vectored by nematodes pose serious agricultural, economic, and health threats; however, little is known of the ecological and evolutionary aspects of pathogen transmission by nematodes. Here we describe a novel model system with two trophic levels, bacteriophages and nematodes, each of which competes for bacteria. We demonstrate for the first time that nematodes are capable of transmitting phages between spatially distinct patches of bacteria. This model system has considerable advantages, including the ease of maintenance and manipulation at the laboratory bench, the abilit

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