Shuitu Baochi Xuebao, 2018 煤矸石是一种潜在的资源，在现有技术条件下无法快速处理的大量煤矸石裸露堆放造成占地及生态环境问题，已成为矿区生态环境治理关注的热点。煤矸石山的植被恢复是其原位保存的最有效办法。腐殖酸作为腐殖质的主要组成成分对改善不利的植物生长环境具有积极作用。为探讨腐殖酸对煤矸石养分释放的影响，采用室内培养试验方法，研究了添加不同浓度腐殖酸及不同培养时间下煤矸石的pH、电导率（EC）变化及氮、磷、钾速效养分的释放特征。结果表明：相对于不添加腐殖酸处理（CK），添加腐殖酸的煤矸石pH明显升高，最高达到7.77 ...
余健 +7 more
doaj
Validation and Forensic Application of a Domestic Human DNA Quantitative Detection Kit [PDF]
ObjectiveTo verify the efficacy of a domestic human DNA quantification kit based on real-time fluorescence quantitative PCR in detecting the total human DNA concentration, male DNA concentration in mixed male/female DNA samples, the degree of DNA ...
CHEN Jian-gang +10 more
core +1 more source
Selective Isolation of Actinomycetes from Special Habitat and a New Strain Identification [PDF]
, 2012 放线菌的次级代谢产物是一类重要的微生物药物资源。近年来，选择性分离放线菌的方法学研究取得了显著成绩。基因筛选、培养基筛选、原位筛选等成为当今研究的重要方法。虽然这些分离方法出发点不同，但是它们都为放线菌的新药发现提供了宝贵的菌种资源。 本论文以厦门、云南、青海三地的植物根际土壤样品作为实验材料，采用了聚乳酸(Poly(L-lactide))(PLA)-明胶培养基用于稀有放线菌的分离。通过选择分离能力的比较发现，聚乳酸(PLA)-明胶培养基比腐殖酸培养基有更好的选择分离效果。利用聚乳酸(PLA ...
徐祯
core
, 2011 针对1种典型的酸性、高有机质含量类型土壤——红树林土壤,从DNA产量、DNA纯度、土壤腐殖酸类物质的提取量以及DNA提取物PCR(polymerase chain reaction)扩增反应的敏感度等方面比较了不同提取缓冲液对土壤DNA品质的影响。结果表明,酸性SDS(sodium dodecyl sulfate)提取缓冲液所获得的土壤DNA产量及纯度均较低;PVP(polyvinylpyrrolidone)提取缓冲液所获得的土壤DNA产量较高,但土壤腐殖酸类物质的提取量亦远高于其他提取缓冲液 ...
蒋云霞, 郑天凌
core
The research of micro-electrolysis process composed of discarded iron slag and coke pretreating landfill leachate [PDF]
, 2006 ［中文文摘］研究表明,废铁屑和焦炭微电解是预处理垃圾渗滤液的一种有效方法,可去除垃圾渗滤液COD、色度和腐殖酸等污染物质,改善其可生化性、降低负荷,为后续生化处理创造良好的条件。通过静态正交实验确定废铁屑和焦炭最佳投加体积比为1∶3;最佳反应pH值为4;动态实验中,反应时间为1 h时,COD和色度去除率分别高达68%和91%;BOD/COD从0.3提高到0.5左右。［英文文摘］The study shows that micro-electrolysis process is an effective ...
严滨(三达膜科技（厦门）有限公司) +5 more
core
Combined Effects of Humic Acid-Modified Magnetic Biochar and AMF on the Properties of Saline-Alkali Soil and Photosynthetic Parameters of Muskmelon [PDF]
[Objective] To improve humic acid-modified magnetic biochar (HA-MBC) and explore the combined effects of modified biochar and arbuscular mycorrhizal fungi (AMF) on the properties of saline-alkali soils and the growth of muskmelon.
CHEN Xinyan +12 more
core +1 more source
Application of miniSTR Loci and Its Detection System for Degraded Materials in Forensic Medicine#br# [PDF]
, 2018 Objective To establish multiplex system of 16 miniSTR loci, and explore its application value for the degraded materials in forensic medicine. Methods The multiplex system of 16 miniSTR loci was established using a six-dye fluorescence labeling ...
WANG Xin, CHEN Wei-zhong, ZHANG Jian, et al.
core +1 more source
Distribution and Species of Mercury in Water and Sediments from Huangpu River [PDF]
, 2005 黄浦江江水的总汞、溶解态汞和颗粒汞含量变化较大,其平均值分别为(0.4±0.44)ng/mL、(0.27±0.42)ng/mL和(0.13±0.10)ng/mL,江水中汞以溶解态汞为主.黄浦江沉积物的总汞含量为70.52ng/g~387.30ng/g,平均汞含量为(204.03±97.41)ng/g.江水和沉积物中汞的沿江分布具有中游高,上游和下游低的特征,西渡—南浦大桥江段汞含量为整个黄浦江最高的江段,汞的分布特征与两岸工农业布局相一致.沉积物总汞与有机质显著相关 ...
丁振华 +4 more
core
Adsorption of Heavy Metals Lead and Cadmium in Soil by Modified Lignite [PDF]
In this paper, the adsorption and resolution mechanism of heavy metals Pb2+ and Cd2+ by modified lignite were studied. Methods: Four single-factor gradient variables (pH value, amount of lignite, adsorption time, adsorption temperature) were designed to ...
Duanping XU +4 more
core +1 more source
Study on Abiotic Degradation and Mechanism of 23 Azole Pesticides in Waters [PDF]
, 2013 唑类农药是近年来发展最为快速的“新型”农药之一，主要作为杀菌剂和植物生长调节剂在世界范围内广泛使用。本文针对23种常用唑类农药，采用液液萃取-气相色谱-质谱联用技术（LLE-GC-MS）建立其在水中的一齐分析方法，分别在室外自然条件与室内控制条件下，研究了目标唑类农药在不同水中的非生物降解行为、影响因素及其降解机理，以期为水环境中唑类农药的残留持久性和风险评估提供科学手段和数据。 主要研究内容和结果如下： （1）天然水中23种唑类农药的LLE-GC-MS同时分析方法 采用液液萃取、GC-MS检测 ...
顾晨凯
core