Marco Battaglia博士是加拿大领先的精神疾病和成瘾研究机构(CAMH)儿童和青少年抑郁症中心的高级科学家以及多伦多大学精神病学教授。2023年10月,Marco Battaglia博士和Yves De Koninck院士在《Science Advances》杂志上发表“Enhanced harm detection following maternal separation: Transgenerational transmission and reversibility by inhaled amiloride”一文。通过将小鼠幼崽与亲生母体分离转至养母反复实验(RCF),测试小鼠对6%高CO2的呼吸响应,以及在中枢神经系统疾病(如癫痫、偏头痛、多发性硬化、脑缺血再灌注损伤等)方面有极大的发展前景的一种临床常用降压药物阿米洛利对小鼠高CO2呼吸响应的影响等一系列实验。结果发现,与对照组小鼠相比,处理组小鼠成年后对疼痛更敏感,并表现出社交和行为问题,并且当暴露于6%高二氧化碳时,它们往往会出现过度换气现象(Fig1A)。使用阿米洛利后,可显著降低RCF小鼠的呼吸换气(Fig4A)量。实验中的呼吸与气体交换分析测量采用如下SSI定制高分辨率小动物呼吸代谢测量系统,详情可咨询易科泰能量代谢测量实验室。
uestions often arise as to how much residual biodegradable matter remains in sludges from biological processes after previous treatment has been completed( EPA’s F-bio test). In one case, sludge samples were removed from two facultative lagoons. Tests were conducted to determine the methane potential remaining in the sludges and to determine if the sludges were suitable for land spreading. Samples of the sludge containing 20.5 and 22.7 g VSS were transferred to respective reaction vessels and methane production was measured over a period of 18 days. Methane production ranged from 120 mL in one sample to 160 in the second sample as shown in the Figure below. The gas production rate was high for only about 2 days and then leveled off to a rate of about 4 mL/day. The COD conversion equivalent of the produced gas was only about 0.3 to 0.4 g per sample, thereby representing VSS conversions of 1.47 and 1.76 %. The sludge was then deemed to be suitable for land application without further treatment.微生物降解呼吸仪链接:http://www.instrument.com.cn/netshow/SH101516/C121937.htm#
无土栽培系统(Soilless Culture System,SCS)是一种不用天然土壤作基质的植物生产栽培技术,它可以减少甚至消除传统栽培方式造成的土壤质量恶化和日益严重的环境问题等。作为一种走向可持续发展的集约化生产方法,近年越来越受欢迎。例如,荷兰几乎所有的温室区域都使用SCS,因为它们具有优点,包括节省高达50%的水和肥料、能够营养性或生产性地引导作物生长,以及更高的产量和更好的质量等。目前国内外常用的一些堆肥生长基质的物理和化学特性相对良好,而生长基质的生物稳定性作为植物生长的重要因素尚不清楚。2023年该院Graham Howell教授团队在国际园艺学《Horticulturae》杂志发表了“Using Respirometry to Investigate Biological Stability of Growing Media in Aerobic Conditions”一文,详细介绍了SSI呼吸代谢系统构建的堆肥生物降解动态呼吸仪测量五种无土栽培生长基质(分别为厌氧沼渣纤维AD、树皮BC、椰壳纤维CR、木纤维WF和绿色堆肥GC)在有氧条件下单一材料的微生物活性、水分对测试的影响、添加营养物质对测试的影响、以及不同生长基质混合的交互作用影响等的研究成果。