论以国土资源节约集约利用方式促进山西省经济转型发展

国土资源是人类生存和发展之本,节约集约是经济社会可持续发展之基。山西省作为资源枯竭型地区,土地利用较为粗放,集约利用程度不高;矿山企业呈现"多、小、散、乱"的格局,资源消耗高、浪费大的问题十分突出。当务之急是推进经济转型,从资源低效滥用粗放扩张型,转为资源节约集约高效利用质量效益型,把节约集约利用国土资源作为转变发展方式的一个突破口和切入点,促进区域经济健康可持续发展。     

小型等离子体声源在水声领域的应用前景分析

简要介绍了液电效应及等离子体声源的一些基本情况，并根据实验采集到的不同等离子声源数据，选取了其中 2 组进行分析。对实验采集到的等离子声源单次脉冲声信号和脉冲串声信号进行了时域信号分析，通过 MATLAB 软件计算了信号在不同时刻的能量幅值。随后，在频域对信号进行频谱分析，通过 FFT 变换分析了信号在频域范围内的能量分布。之后，对信号的功率谱进行了估计，用 PSD 算法分析了能量在不同频率上的分布信息，得出了等离子体声源信号频率范围广、低频能量大的结论。最后，结合等离子体声源信号频率及能量分布情况，对等离子体声源在水声领域的应用前景进行了分析。     

浅析卫片执法检查与国土资源执法监察工作的关系

卫片执法检查作为国土资源执法监察工作的一个重要执法手段,在维护国土资源管理利用秩序、推动可持续发展方面发挥了重要作用。其工作周期较长,部分基层政府和部门将大量时间和精力花在卫片执法检查上,导致日常执法监察工作因时间因素,无法有效开展,造成了“重卫片检查、轻日常监管”现象的发生。     

江苏沿海贝类软体中麻痹性贝毒素种类及含量变化的多年观测研究

Paralytic shellfish toxins(PSTs) are notorious neurotoxins that threaten public health and food safety worldwide.Although PST monitoring programs have recently been established throughout China, the profiles and variation of PSTs in important commercial clams(e.g., Mactra veneriformis, Ruditapes philippinarum, and Meretrix meretrix) along the Jiangsu Province coastline remain largely unexplored. In this study, a validated hydrophilic interaction liquid chromatography–tandem mass spectrometry(HILIC-MS/MS) method was used to examine PST profiles and levels in 540 clam samples from natural production areas along Jiangsu Province coastline during2014–2016. Although the PST levels(≤6.38 μg saxitotoxin equivalents(eq)/kg) were consistently below European Union regulatory limits(≤800 μg saxitotoxin eq/kg) during this time period, saxitotoxin, decarbamoylsaxitotoxin,and gonyautoxins 1 and 4 were detected, and nearly 40% of the samples were saxitotoxin-positive. The PST levels also varied significantly by seasons, with peak values observed in May during 2014–2016. This is the first systematic report of PSTs in clams from Jiangsu Province, and additional research and protective measures are needed to ensure the safety of clams harvested in this area.