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随着人们生活水平的不断提高,儿童食品市场迅猛发展,市场规模不断扩大,但是行业内部各种乱象已经引起了社会的广泛关注。通过分析儿童食品市场的现状,明确儿童食品法律概念不清晰、监管标准缺失、市场准入门槛虚设及相关监管法律和主体缺位是儿童食品市场无序发展的重要原因,在此基础上提出明确法律定义、制定监管标准、弥补法律空白等建议,以期实现对儿童食品市场的有效法律监管,为儿童的健康成长保驾护航。 相似文献
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目的:研究高血压候选基因β3肾上腺素能受体基因β3-Adrenergic receptor(ADRB3)在日本人群的分布,并探讨ADRB3基因Trp64Arg多态性与原发性高血压病(essential hypertension,EH)的关系.方法:采用流行病学调查方法分析肥胖指数、血浆胆固醇和甘油三酯等临床指标,同时调查受检者吸烟和饮酒等生活习惯;Taqman-PCR法分析ADRB3基因Trp64Arg多态性在大样本日本人群(样本总数2 714人,其中HT组1 328例,非高血压组(NT)1 386例)的分布及其与临床指标间的相关性.结果:除总胆固醇外,其余指标如年龄、性别、肥胖指数、舒张期血压、收缩期血压、HDL-脂蛋白和甘油三酯等在Trp/Trp、Trp/Arg和Arg/Arg这3类基因型携带者中均无显著性差异;卡方检验结果显示ADRB3的Trp64Arg基因型(p=0.425)与等位基因频率(p=0.501)在HT与NT之间没有显著统计学意义;ADRB3的Trp64Arg基因多态性与高血压病Logistic回归模型分析结果显示,卡方值(wald)为0.356;比值比为0.884;95%的可信区间为0.589~1.326,p值为0.551.结论:按照p<0.05统计学标准,ADRB3的Trp64Arg多态性可能与日本人群EH无关.Abstract: To investigate the correlation between Trp64Arg polymorphism in β3-adrenergic gene and essential hypertension (EH) in large scale Japanese, a case-control study consisting of 1 328 essential hypertensive subjects (HT) and 1 386 normotensive controls (NT) was performed. All subjects were urban residents randomly selected from the Ehime Prefecture of Japan. Body mass index (BMI) was recorded in the epidemiological investigation process, some biochemical indicators (HDL, LDL, triglyceride and cholesterol) were measured from the blood plasma of the subjects. Meanwhile, we investigated some life-style factors of the subjects, including smoking and alcohol use. The ADRB3 Trp64Arg polymorphisms were determined in DNA extracted from peripheral blood leukocytes by Taqman-polymerase chain reaction (Taqman-PCR). Except total cholesterol, the other indicators studied (age, sex, BMI, SBP, DBP and HDL)did not differ significantly among the Trp/Trp, Trp/Arg and Arg/Arg genotype carriers. Chi-square anal ysis showed no statistically significant differences in either genotype distribution (p=0. 425) or allele frequencies (p=0. 501) between hypertensive and normotensive subjects. The logistic regression model results demonstrated that there were no association between ADRB3 gene Trp64Arg polymorphisms and hypertension subjects, and Wald=0. 356, Odd=0.884, 95%CI was 0.589-1.326, and p=0.551. Therefore, the present study suggests that the ADRB3 gene Trp64Arg polymorphisms might not be significantly associated with hypertension in homogeneous Japanese. 相似文献
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1997年8月,自治区植检站组织我区部分地、市、县植检站负责人分两批先后到浙江省杭州市、建德市和广东省湛江市、徐闻县及海南省三亚市等地学习取经。所到之处,均受到了当地农业局领导和植检同行的热情接待。通过眼见耳闻,大家获益非浅,感触颇深,觉得外省同行的先进工作经验和方法,确实值得我区借鉴和学习。 现将这次考察体会最深的几点作为“他山之石”介绍给大家,以起到参考和借鉴的作用。1 政府领导的重视支持是做好植物检疫工作的关键。 在全国治理公路“三乱”的严峻形势下,浙江省仍能保留防止稻水象甲传播的14个检查点,省有关… 相似文献
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盐、碱胁迫与温度对黄花苜蓿种子发芽的影响 总被引:1,自引:0,他引:1
为了探讨盐、碱胁迫与温度交互作用对黄花苜蓿(Medicago falcata)种子萌发的影响,选用两种中性盐(NaCl、Na2SO4)和两种碱性盐(Na2CO3、NaHCO3),3个温度(10/20 ℃、15/25 ℃和25/35 ℃)处理,测定各因子对种子最终发芽率及发芽速度的影响。结果表明,盐、碱胁迫与温度及其交互作用对黄花苜蓿种子发芽均有显著影响(P<0.05)。黄花苜蓿种子发芽率和发芽速度在10/20 ℃或15/25 ℃处理下最高,并且两者之间差异不显著(P>0.05)。随着盐、碱胁迫浓度的增加,种子发芽率和发芽速度降低,且碱性盐的胁迫作用大于中性盐。25/35 ℃高温显著抑制了各个处理下黄花苜蓿种子发芽,并且加剧了盐、碱胁迫对种子萌发的抑制作用。黄花苜蓿对碱性盐和高pH有一定的耐受性,在25 mmol·L-1的Na2CO3和30 mmol·L-1的NaHCO3处理下均能良好发芽。 相似文献