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排序方式: 共有155条查询结果,搜索用时 171 毫秒
81.
Ahn KC Kim HJ McCoy MR Gee SJ Hammock BD 《Journal of agricultural and food chemistry》2011,59(7):2792-2802
This paper describes some of the early work on pyrethroid insecticides in the Casida laboratory and briefly reviews the development and application of immunochemical approaches for the detection of pyrethroid insecticides and their metabolites for monitoring environmental and human exposure. Multiple technologies can be combined to enhance the sensitivity and speed of immunochemical analysis. The pyrethroid assays are used to illustrate the use of some of these immunoreagents such as antibodies, competitive mimics, and novel binding agents such as phage-displayed peptides. The paper also illustrates reporters such as fluorescent dyes, chemiluminescent compounds, and luminescent lanthanide nanoparticles, as well as the application of magnetic separation, and automatic instrumental systems, biosensors, and novel immunological technologies. These new technologies alone and in combination result in an improved ability to both determine if effective levels of pyrethroids are being used in the field and evaluate possible contamination. 相似文献
82.
Yamada K Lim J Dale JM Chen H Shinn P Palm CJ Southwick AM Wu HC Kim C Nguyen M Pham P Cheuk R Karlin-Newmann G Liu SX Lam B Sakano H Wu T Yu G Miranda M Quach HL Tripp M Chang CH Lee JM Toriumi M Chan MM Tang CC Onodera CS Deng JM Akiyama K Ansari Y Arakawa T Banh J Banno F Bowser L Brooks S Carninci P Chao Q Choy N Enju A Goldsmith AD Gurjal M Hansen NF Hayashizaki Y Johnson-Hopson C Hsuan VW Iida K Karnes M Khan S Koesema E Ishida J Jiang PX Jones T Kawai J Kamiya A Meyers C Nakajima M 《Science (New York, N.Y.)》2003,302(5646):842-846
83.
Lopes-Gautier R Douté S Smythe WD Kamp LW Carlson RW Davies AG Leader FE McEwen AS Geissler PE Kieffer SW Keszthelyi L Barbinis E Mehlman R Segura M Shirley J Soderblom LA 《Science (New York, N.Y.)》2000,288(5469):1201-1204
Infrared spectral images of Jupiter's volcanic moon Io, acquired during the October and November 1999 and February 2000 flybys of the Galileo spacecraft, were used to study the thermal structure and sulfur dioxide distribution of active volcanoes. Loki Patera, the solar system's most powerful known volcano, exhibits large expanses of dark, cooling lava on its caldera floor. Prometheus, the site of long-lived plume activity, has two major areas of thermal emission, which support ideas of plume migration. Sulfur dioxide deposits were mapped at local scales and show a more complex relationship to surface colors than previously thought, indicating the presence of other sulfur compounds. 相似文献
84.
Shirley Ling Roshada Hashim Sagiv Kolkovski & Alexander Chong Shu-Chien 《Aquaculture Research》2006,37(13):1267-1275
We conducted a study to determine the effect of dietary protein and lipid levels on the growth and reproductive performance of a freshwater ornamental species, the swordtail (Xiphophorus helleri). Two protein levels (20% and 30%) with four lipid levels (8%, 12%, 16%, 20%) within each protein levels were tested through formulation of practical diets labelled as 20P8L, 20P12L, 20P16L, 20P20L, 30P8L, 30P12L, 30P16L and 30P20L respectively. Results showed that dietary protein level significantly influenced final weight, weight gain and specific growth rate, while dietary lipid did not influence any of these growth parameters. More specifically, increasing dietary lipid levels from 8% to 12–16% in both 20% and 30% protein levels significantly improved swordtail growth performance. Dietary protein levels positively influenced gonadosomatic and hepatosomatic indexes. Both dietary protein and lipid significantly influenced female muscle protein content. Significantly highest fry production was obtained from diets 30P12L and 30P16L, respectively, while diet 20P8L resulted in the lowest fry production. This present study indicates the dietary protein and lipid requirements for female swordtails for optimized growth and reproductive performances to be at 30% and 12% respectively. 相似文献
85.
86.
Lithistid sponges are known to produce a diverse array of compounds ranging from polyketides, cyclic and linear peptides, alkaloids, pigments, lipids, and sterols. A majority of these structurally complex compounds have very potent and interesting biological activities. It has been a decade since a thorough review has been published that summarizes the literature on the natural products reported from this amazing sponge order. This review provides an update on the current taxonomic classification of the Lithistida, describes structures and biological activities of 131 new natural products, and discusses highlights from the total syntheses of 16 compounds from marine sponges of the Order Lithistida providing a compilation of the literature since the last review published in 2002. 相似文献
87.
Szeto YT Wong JW Wong SC Pak SC Benzie IF 《Plant foods for human nutrition (Dordrecht, Netherlands)》2011,66(2):97-100
The genoprotective effect of American and Asian ginseng on human lymphocytic DNA was studied. Using the comet assay, aqueous
extracts of both types of ginseng were shown to diminish hydrogen peroxide-induced DNA damage. In contrast, and in accordance
with traditional Chinese medicine beliefs, addition of the juice from Chinese turnip counteracted the beneficial effect of
ginseng. Results showed that incubating ginseng along with turnip juice abolished the DNA protective effect of both American
and Asian ginseng. Although the exact mechanism has not been elucidated, the counteracting effect of turnip on ginseng seems
unlikely to be mediated by enzymatic action as the effect was seen with boiled as well as unboiled turnip extract. 相似文献
88.
89.
90.
Jing Bai George L. Baker Shirley M. Baker Renee M. Goodrich Schneider Naim Montazeri 《Journal Of Aquatic Food Product Technology》2013,22(8):848-860
Tuna and mahi-mahi are two major fish species responsible for histamine poisoning. This research developed a rapid ultra-high performance liquid chromatography (UHPLC) method to determine amino acids, histamine, and other biogenic amines that can act as co-indicators of histamine poisoning in tuna and mahi-mahi. The modified UHPLC method could simultaneously determine four biogenic amines and 10 major free amino acids in mahi-mahi (Coryphaena hippurus) and yellowfin tuna (Thunnus albacares) within 17.5 min. This UHPLC method showed good linear response, sensitivity, resolution, recovery, repeatability, and number of theoretical plates. The concentrations of detected amino acids, biogenic amines in mahi-mahi and tuna, and their relationships with fish spoilage grade were determined by this UHPLC method. The developed UHPLC method is a rapid and accurate way to monitor quality changes of mahi-mahi and tuna by inspecting the changes of amino acids and biogenic amines. 相似文献