基于脱钩理论的烟台市碳排放效应分析

[目的]通过分析烟台市2000—2011年碳排放与经济发展之间的关系,为烟台市碳减排及发展低碳经济提供参考。[方法]基于土地利用碳源/碳汇研究的理论框架和计算模型,首先对烟台市土地利用、能源消费等数据进行分析,计算了不同土地利用类型的碳源/汇。然后利用Tapio脱钩模型分析该区碳排放与经济发展之间的脱钩弹性关系。[结果](1)建设用地是主要碳源,其面积与净碳排放量成倒U型库兹涅茨曲线关系。(2)林地为主要碳汇,其他用地影响较小且主要表现为碳汇。(3)烟台市净碳排放量在2001—2011年持续增长,年均增长率不断降低。[结论]烟台市碳减排工作已取得一定的成效,但减排形势依然严峻。其经济发展3个阶..

The Research on a New BP Algorithm and its Application in the Fault Diagnosis Expert System for VVVF Speed Regulating System

根据bP算法的基本理论，针对bP算法收敛速度慢，提出了一种加快bP算法收敛速度的变步长bP算法，并将其应用到变频调速故障诊断专家系统中，加快了专家系统的推理速度，有效地诊断了变频调速系统在运行中发生的故障.Based on the basic theory of BP network algorithm and consideration of its slow convergent speed, this paper presents a variable step BP algorithm for accelerating its convergent speed is proposed, and this algorithm is integrated into fault diagnosis expert system for VVVF Speed Regulating System.The system can diagnose the faults of VVVF Speed Regulating System effectively.河南省自然科学基

Study on Catalytic Pyrolysis of Diatom Chaetoceros sp. by Py-GC/MS Technology

The catalytic pyrolysis characteristics of diatom Chaetoceros sp. powders were investigated by pyrolysis-gas chromatography/mass spectrometry （Py-GC/MS） technology. Using HZSM-5 as catalyst, the effect of Si/A1 ratio in HZSM-5, catalyst consumption, pyro

超细vo2粉末的制备及其可逆相变的原位表征

Oxalic acid was chosen as the reductant to prepare superfine VO2 powders from V2O5 under high-purity N2 atmosphere. The effect of V2O5：H2C2O4 molar ratio on the VO2 purity was investigated. X-ray diffraction（XRD）, scanning electron microscopy（SEM） and en

Preparation of VO_2 Superfine Powders by a Redox Method and In Situ Characterization on the Reversible Phase Transition

Oxalic acid was chosen as the reductant to prepare superfine VO2 powders from V2O5 under high-purity N2 atmosphere. The effect of V2O5：H2C2O4 molar ratio on the VO2 purity was investigated. X-ray diffraction（XRD）, scanning electron microscopy（SEM） and en