887,667 research outputs found
Kim Kim
No full text"Knowing that most interracial and international adoptions send children of color into Western Caucasian families, the artist and activist kimura byol-nathalie lemoine wanted to present another vision of what interracial adoption could be. To realize this, the artist Kim Waldron and kimura-lemoine decided to stage photographs of everyday life and key moments of the journey of a fictitious adoption. These photographs tell the story of a Caucasian woman adopted into a Canadian family of Korean descent. By this reversal, these images, at first sight banal, become interesting and intriguing here. The Kim Kim project elaborates Kim Waldron’s previous photographic and video work that incorporates self-portraiture into fictitious situations in order to challenge aspects of identity and social conditioning. Her photographic work uses a documentary aesthetic to make fictional propositions credible. This collaboration with kimura-lemoine uses the aesthetics of family photographs, a Korean family whose surname is Kim and Kim Waldron’s birth parents to create an imaginary and improbable tale of international adoption." -- Artexte website
Role of chemical exchange on the relayed nuclear Overhauser enhancement signal in saturation transfer MRI
No full text© 2021 International Society for Magnetic Resonance in MedicinePurpose: The pH sensitivity of chemical exchange-relayed nuclear Overhauser enhancement (rNOE) signal in a saturation transfer experiment is not fully understood and needs further investigation. Methods: A three-pool-exchange model was simulated assuming that the magnetization transfer between an NOE pool and water is relayed by a chemical exchange (CE) pool. The saturation transfer signals from bovine serum albumin (BSA) and egg white albumin (EWA) phantoms were measured with different pH or different D2O/H2O mixture solutions. Results: Simulation results showed that the rNOE signal is independent of the Larmor frequency of the CE pool, indicating any CE pool can effectively relay NOE magnetization. The rNOE signal is sensitive to a change of the CE pool size and/or exchange rate only if the CE becomes a rate-limiting step in the relay process. The rNOE signal from BSA phantoms showed larger pH-dependence at −3.0 ppm than those at −1.9 and −4.0 ppm. However, rNOE signals from aliphatic protons have much weaker pH-dependence than the CEST signal, suggesting that CE is unlikely the rate-limiting step and the rNOE signals in BSA are mainly relayed by fast exchanging protons. The existence of aromatic NOE was confirmed by proton spectroscopy. Conclusion: The pH-sensitivity of the rNOE signal is determined by whether the CE process is a rate-limiting step in the relay. The rNOE signal has much weaker pH-sensitivity than the CEST signal in BSA proteins, which can explain the weak pH sensitivity of rNOE in vivo.11Nsciescopu
Protecting Animals 25: Kim Stallwood
No full textThis episode of Knowing Animals is from the Protecting Animals series. I am joined by Kim Stallwood. Kim is a long standing animal advocate, having working for many of the world’s leading animal protection agencies in both the UK and the USA. We talk to Kim about his reflections on that work. They are outlined in his book ‘Growl: Life, Lessons, Hard Truths and Bold Strategies from an Animal Advocate’. Growl was published by Lantern Books in 2014
Extending Protection at the WTO to Products Other Than Wines and Spirits: Who Will Benefit?
No full textThe issue of extending geographic indicator protection to products other than wines and spirits has created wide divergences between demandeurs and opponent countries at the WTO. This article examines the economic impacts of the proposals submitted at the WTO by these two groups of countries, focusing mainly on market access, generic names and impacts for the consumer in North America. Results from our survey show that reducing tariff and non-tariff barriers in North America would be more important in improving market access for EU geographical indications (GIs) than would GI extension. In addition, it would appear that North American consumers may not benefit from extension of protection to products other than wines and spirits..generic names, geographical indications, market access, WTO, International Relations/Trade,
리튬 이차 전지용 리튬 망간 산화물 분말의 제조 방법
No full textA method for manufacturing LiMn2O4 powders for use in a lithium secondary battery positive electrode, is provided, in which oxide or carbonate is used as a positive electrode material, a solution is dried at a temperature higher than 150° C., and the resulting matter is put into a reaction furnace in order to be calcinated for a short time, after treating by spontaneous combustion. A certain degree of crystallization of the positive electrode powders can be obtained in the spontaneous combustion process. Thus, a battery having a large charging and discharging capacity and a long life cycle can be manufactured even under a high current condition
Compositional differences in hybrids between protoporphyrinogen IX oxidase (PPO)-inhibiting herbicide-resistant transgenic rice and weedy rice accessions
No full textWe characterized the metabolites in grains of transgenic protoporphyrinogen IX oxidase-inhibiting herbicide-resistant rice and weedy accessions using GC？MS and examined whether the chemical composition of their hybrids differed from that of the parents. We found that the metabolite profiles of transgenic rice and weedy rice were clearly separated. Although the metabolite profiles of F2 progeny were partially separated from their parents, zygosity did not affect the profiles. The F2 progeny had similar or intermediate levels of most major nutritional components compared with their parents. However, levels of galactopyranose, trehalose, xylofuranose, mannitol, and benzoic acid were higher in the F2 progeny. Some fatty acids and organic acids also showed prominent quantitative differences between the F2 progeny and the parents. Changes in the metabolite levels of transgenic crop-weed hybrids compared to their parents might influence not only the ecological consequences of the hybrids, but also the nutritional quality and food safety.
Wave propagation in tyres and the resultant noise radiation
No full textTyre noise has become an increasingly important road traffic noise source. This is because other sources on the vehicle, such as the air intake system, the exhaust system and the engine, have tended to become relatively quieter. This situation forces the tyre noise component to be reduced in order to achieve a reduction in the overall traffic noise level.In the research reported here, vibration, sound radiation and sound transmission of a passenger car radial tyre were investigated. The first half of this thesis discusses the vibration characteristics using two methods: (1) FEM to analyse tyre modal behaviour in detail, (2) Analytical models to interpret the FEM results. These models have both advantages and disadvantages in investigating tyre vibration. Combining the two methods is necessary in order to fully understand the vibration behaviour of a tyre. Dispersion relationships and the related frequency of tyre modes are analysed by FEM and the flexural wave propagation in the tyre shell, and the sound radiation of the tyre wall by flexural modes is analyzed using plate and shell theory.The second part of this thesis discusses the radiation and transmission of tyre noise. To predict the radiation of sound with only a knowledge of the surface vibration velocity, the experimental Green's functions were estimated by using the acoustic reciprocity principle. This technique was also applied to separate airborne noise from structure borne noise for identification of the transmission path of tyre noise into a vehicle cabin and quantification of the relative contribution of various regions of the vibrating tyre surface to vehicle interior noise. The application of acoustic reciprocity for the tyre noise problem was verified and compared with BFM analysis.</p
Electric-field-induced commensurate phase in ZrTiO4
No full textWith the use of x-ray diffraction, the creation of a new commensurate phase with modulation wave-vector q(0)=26/50a* by the application of a dc electric field along the a axis in ZrTiO4 is demonstrated. The temperature range over which this induced phase exists (12 K at E=8 KV/cm), increases with the increasing dc electric field. (C) 1997 American Institute of Physics.
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