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11.
The electrochemical behaviors of the interaction of chromotrope 2R (CH2R) with human serum albumin (HSA) are investigated
on the hanging mercury drop electrode with linear sweep voltammetry. In the acidic buffer solution (pH 2.5) CH2R has a well-defined
voltammetric reductive wave at −0.34 V (SCE). On the addition of HSA into the CH2R solution, the reductive peak current of
CH2R decreases with little movement of the peak potential. The voltammetric study shows that the electrochemical parameters
of interaction solution do not change and a new electrochemically non-active complex is formed via interaction of CH2R with
HSA, which cannot be reduced on the Hg electrode and results in the decrease of the free concentration of CH2R. The decrease
of reductive peak current is proportional to HSA concentration and further used for protein detection. The binding ratio and
the binding constant are further calculated with the experimental voltammetric data. 相似文献
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An examination of the holotype of Polyalthia pingpienensis P. T. Li has shown that the holotype is an admixture. The branch and the flower on the sheet should be referred to P. plagioneura Diels,whereas the detached leaf belongs to another species,whose i 相似文献
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Tuberculosis is a major global public health problem, which also affects economic and social development. China has the second largest burden of tuberculosis in the world. The tuberculosis morbidity in Xinjiang is much higher than the national situation; therefore, there is an urgent need for monitoring and predicting tuberculosis morbidity so as to make the control of tuberculosis more effective. Recently, the Box-Jenkins approach, specifically the autoregressive integrated moving average (ARIMA) model, is typically applied to predict the morbidity of infectious diseases; it can take into account changing trends, periodic changes, and random disturbances in time series. Autoregressive conditional heteroscedasticity (ARCH) models are the prevalent tools used to deal with time series heteroscedasticity. In this study, based on the data of the tuberculosis morbidity from January 2004 to June 2014 in Xinjiang, we establish the single ARIMA (1, 1, 2) (1, 1, 1)12 model and the combined ARIMA (1, 1, 2) (1, 1, 1)12-ARCH (1) model, which can be used to predict the tuberculosis morbidity successfully in Xinjiang. Comparative analyses show that the combined model is more effective. To the best of our knowledge, this is the first study to establish the ARIMA model and ARIMA-ARCH model for prediction and monitoring the monthly morbidity of tuberculosis in Xinjiang. Based on the results of this study, the ARIMA (1, 1, 2) (1, 1, 1)12-ARCH (1) model is suggested to give tuberculosis surveillance by providing estimates on tuberculosis morbidity trends in Xinjiang, China. 相似文献
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Generation and characterization of two novel low phytate mutations in soybean (<Emphasis Type="Italic">Glycine max</Emphasis> L. Merr.) 总被引:1,自引:0,他引:1
Yuan FJ Zhao HJ Ren XL Zhu SL Fu XJ Shu QY 《TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik》2007,115(7):945-957
Phytic acid (PA, myo-inositol 1, 2, 3, 4, 5, 6 hexakisphosphate) is important to the nutritional quality of soybean meal. Organic phosphorus (P) in PA is indigestible in humans
and non-ruminant animals, which affects nutrition and causes P pollution of ground water from animal wastes. Two novel soybean
[(Glycine max L. (Merr.)] low phytic acid (lpa) mutations were isolated and characterized. Gm-lpa-TW-1 had a phytic acid P (PA-P) reduction of 66.6% and a sixfold increase in inorganic P (Pi), and Gm-lpa-ZC-2 had a PA-P reduction of 46.3% and a 1.4-fold increase in Pi, compared with their respective non-mutant progenitor lines.
The reduction of PA-P and increase of Pi in Gm-lpa-TW-1 were molar equivalent; the decrease of PA-P in Gm-lpa-ZC-2, however, was accompanied by the increase of both Pi and lower inositol phosphates. In both mutant lines, the total
P content remained similar to their wild type parents. The two lpa mutations were both inherited in a single recessive gene model but were non-allelic. Sequence data and progeny analysis indicate
that Gm-lpa-TW-1 lpa mutation resulted from a 2 bp deletion in the soybean d-myo-inositol 3-phosphate synthase (MIPS1 EC 5.5.1.4) gene 1 (MIPS1). The lpa mutation in Gm-lpa-ZC-2 was mapped on LG B2, closely linked with microsatellite loci Satt416 and Satt168, at genetic distances of ∼4.63 and
∼9.25 cM, respectively. Thus this mutation probably represents a novel soybean lpa locus. The seed emergence rate of Gm-lpa-ZC-2 was similar to its progenitor line and was not affected by seed source and its lpa mutation. However, Gm-lpa-TW-1 had a significantly reduced field emergence when seeds were produced in a subtropic environment. Field tests of the
mutants and their progenies further demonstrated that the lpa mutation in Gm-lpa-ZC-2 does not negatively affect plant yield traits. These results will advance understanding of the genetic, biochemical
and molecular control of PA synthesis in soybean. The novel lpa mutation in Gm-lpa-ZC-2, together with linked simple sequence repeat (SSR) markers, will be of value for breeding productive lpa soybeans, with meal high in digestible Pi eventually to improve animal nutrition and lessen environmental pollution. 相似文献
16.
报道了3个新异名,即西藏暗罗Polyalthia chinensis S.K.Wu & P.T.Li、Enicosanthellum plagioneurum var.oblanceolatum Ban和桂南瓜馥木Fissistigma guinanense Y.Wan,分别并入疣叶暗罗P.verrucipes C.Y.Wu ex P.T.Li、云桂暗罗P.petelotii Merr.和凹叶瓜馥木Fissistigma retusum(Lev1.)Rehd.。 相似文献
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红树植物厦门老鼠簕(爵床科)的订正 总被引:1,自引:0,他引:1
重新检查了厦门老鼠簕的主模式和副模式标本后,发现原始文献对其鉴别特征"花……具两个苞片,无小苞片"描述有误,应改为"花……具两个小苞片,一个苞片"。基于标本室和野外观察,认为厦门老鼠簕在老鼠簕的正常变化范围之内,应归并到老鼠簕;不赞同把厦门老鼠簕降级为小花老鼠簕或毛鼠簕的变种的处理。报道了一个新异名Acanthusilici folius var.xiamenensis。 相似文献
19.
根据对沙坡头固定沙丘生物结皮的物种调查、鉴定及盖度和生物量的研究,藓类植物共2科,7属,16种,以真藓(Bryum argenteum)为优势种。随着固沙时间的延长,生物结皮中藓类和藻类总盖度呈上升趋势;沿不同年代固定沙丘坡面向上等距离梯度,藓类盖度显著下降,而藻类盖度则平稳上升。对不同年代固定沙丘生物结皮优势种真藓的生物量和固沙量的测定表明,随沙丘固定年代的增加,真藓的生物量和固沙量增加,50年代固沙区结皮层真藓生物量是944.03 kg·hm-2,固沙量是3.925×104 kg·hm-2,但固沙率随时间的增加而减少。真藓的饱和吸水量与生物量呈正相关,50年代固定沙丘藓类结皮层可吸水7.06×103 kg·hm-2,说明藓类结皮层具有很强的吸水和保水能力,对于干燥少雨的沙漠地区具有十分重要的生态学意义。 相似文献
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