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ISBN: (纸本)9787313320964

摘要： 随着经济发展和能源结构调整，准确的电力需求预测对保障电力供应、优化电网布局至关重要。本书深入探讨了电力需求预测这一关键领域，涵盖了从基本理论到前沿技术的全面内容，包括深度学习、人工智能等新兴技术的应用；通过对上海电力市场的实证分析，展示了不同方法在实际应用中的效果，并提出了适用于上海经济的预测模型和技术。本书可为电力行业从业者提供实用的参考。

关键词： F-actin microstructures   Viscoelasticity   Glucose environment   Living cancer cell   Atomic force microscopy  

摘要： F-actin microstructures dominate cellular viscoelasticity and have been used to identify the migration and malignance of living cancer cells. Diabetic cancer patients suffer from increased metastasis and tumor recurrence. However, the long-term evolution and correlation of F-actin microstructures and viscoelasticity distribution are still poorly understood in living cancer cells under varying glucose environment. Herein, by using atomic force microscopy with amplitude modulation-frequency modulation and nanoindentation mode, we characterized the hierarchical F-actin microstructures and the multi-passage viscoelasticity evolution in living Huh-7 cancer cells transferred from high to low glucose level. The highly oriented stress fibers connected by thinner fiber networks were observed in high glucose environment. The circumferential actin networks composed by straight segment-like fibers and the randomly distributed actin fragments connected by ultrathin crosslinking fibers were observed in low glucose environment. The viscoelasticity within the nucleus and the cytoplasm of living Huh-7 cancer cells showed long-term fluctuations over tens of passages after switching glucose environments. The viscoelasticity of cytoplasm was more responsive to the change of glucose environments than nucleus, which was due to the reorganization of F-actin microstructures. Our work provides the microstructural and nanomechanical understanding on the migration and proliferation of living cancer cells under varying glucose environment.

关键词： Metal removal   High-throughput sequencing   Microbial community analysis   Mine discharges   Sulfate-reducing bacteria  

摘要： Using box-type pilot-scale bioreactors installed at an abandoned mine site, we investigated the influence of pH, hydraulic retention time (HRT), and ethanol concentration on reactor performance and microbial community during acid mine drainage (AMD) treatment. Bioreactors with 25 h of HRT that were fed 1.04 mM of ethanol at both pH near-neutral and acidic conditions showed sulfate reduction, predominantly by Desulfosporosius- and Desulfovibrio-related sulfate-reducing bacteria (SRB), that decreased zinc concentrations to less than the Japanese national effluent standard. Under acidic conditions at 12.5 h HRT, the bioreactor showed reducing conditions and effective treatment with a high dominance of Desulfosporosius-related SRB (relative abundance: more than 25%). In contrast, under acidic conditions at 6 h HRT or 0.521 mM ethanol, neither sulfate reduction nor SRB were observed. For striking a balance between ethanol metabolism and sulfate reduction when AMD passes directly through the bioreactor (pH 3.5 was increased to near-neutral values due to the limestone at the top of the reactor), operating conditions of 12.5 h HRT and 1.04 mM ethanol were suitable for maintaining the stable, prolonged operation of the sulfate-reducing bioreactor.

关键词： 社区服务   尊重需求   社区管理探索  

摘要： 社区服务在社区治理中占据核心地位，满足居民的“尊重需求”是其重要的研究议题。文章以万源市秦川社区为例，探讨了“和面书记”如何通过满足居民的“尊重需求”提升社区服务质量。研究基于需求层次理论和人本主义需要理论，分析了“尊重需求”在社区服务中的作用及其对居民认同、感和安全感的促进。研究强调，高质量社区服务应关注居民居住、出行、娱乐、日常便捷服务及儿童友好空间需求，构建分层次、分类型的服务体系，提供差异化、专业化和实时性服务。秦川社区实践表明，将需求理论应用于社区服务，以“尊重需求”为核心，形成“需求-尊重-服务-需求”循环机制，是实现社区服务理论与实践成功结合的关键。

摘要： 工程项目经营效益是项目承包企业的核心经济来源,工程承包企业开展项目建设的最终目标即为获得工程项目的经营利润.在当前的市场环境下,工程项目经济效益通常受到很多复杂因素影响,导致工程管理部门很难采用静态、固定的技术指标进行评价.如何利用动态分析方法评价工程项目的经营效益,已成为工程承包企业以及项目管理部门急待解决的重要问题.