How to promote the household energy transition (HET) has become an important response extreme climate change. Our paper examines whether a low-carbon city pilot (LCCP) can HET. We empirically use Staggered Difference-in-Differences (DID) model explore its mechanisms. The results indicate that LCCP substantially primary driving mechanism underlying this is enhanced governmental emphasis on carbon emission reduction and elevated public environmental awareness. However, increased local...

Abstract The antidiabetic activity of the total lignan from plant Fructus Arctii , used in China for control diabetes, was investigated models alloxan‐induced diabetic mice and hyperglycemic‐hyperlipidemic rats. biochemical parameters studied were: blood glucose, glucose tolerance, serum insulin, triglycerides, cholesterol high density lipoprotein (HDL). Total given to rats daily 10 days at doses 2.0, 1.0, 0.5 g/kg 1.38, 0.69, 0.35 respectively. alloxan‐diabetic animals showed significant...

Using the data of drilling, logging, core, experiments and production, heterogeneity differential hydrocarbon accumulation model deep reservoirs in Cretaceous Qingshuihe Formation (K1q) western section foreland thrust belt southern Junggar Basin are investigated. The target characterized by superimposition conglomerates, sandy conglomerates sandstones, with high content plastic clasts. reservoir space is mainly composed intergranular pores. overall tight, conglomerate has best physical...

The Lower Cretaceous Bashijiqike Formation, which is an important gas exploration target in the Kuqa Depression, Tarim Basin, China, excellent case illustrating diagenesis and reservoir property variations of tight sandstone with burial depths ranging from 3500 m to 8000 m. Thus, integrated approaches incorporating thin-section petrographic characterization, mineral morphology identification, X-ray diffraction analysis, tests, fluid inclusion analysis were applied investigate different...

The orogenic base metal deposits gain more and attentions in recent years. ore-forming fluids associated with these are enriched reduced sulfur have low salinity. Since this kind of fluid has affinity to transport metals, pre-enrichment sulfide should take place during the formation deposits. Dongshengmiao Zn-Pb-Cu deposit, which is located northern margin North China Block, was considered as a two-stage mineralization process proposed by previous researchers, but other researchers that...

A static magnetic field (SMF) assisted freezing system, which can generate a with strength of 0–180 Gs at the center samples, was designed. The simulation and measurement methods determined that extreme values internal induction intensity samples were less than 5% compared center. deionized water 0.9% NaCl solution subjected to experiment. had maximum supercooling 20, 80, 160 Gs; degree increased ranging from 0 100 Gs. extent tended be stable within range 100–180 SMFs could increase...

Carbon emission reduction was a crucial objective for China’s green transformation, yet establishing regional cooperation with neighboring areas posed significant challenge in carbon governance. We investigated the spillover effects of emissions trading (CET) on among Chinese cities, employing spatial difference-in-differences (DID), Callaway and Sant’Anna DID (CSDID), other methodologies. Our paper integrated datasets high-speed rails, dialects, at prefecture-level city scale. The findings...

Abstract Garnet occurs in a wide range of rock types, from mantle peridotites to granites, eclogites skarns. In recent years, garnet LA‐ICP‐MS (Laser Ablation Inductively Coupled Plasma Mass Spectrometry) U‐Pb dating has provided powerful solution for retrieving the ages formations, but successful is often prohibited by low concentration U. However, U, trace element garnet, unknown prior analysis. this study, we propose that U can be predicted contents major and minor elements, which...

Nowadays, with the leap‐forward development of computer technology and transformation information management concepts, China’s construction industry is quietly entering era refined management. Accurate estimation cost control have become among key considerations industry. For calculation engineering quantity, there are already many software devices that can be used for structure which means incorrect operation personnel has been reduced to some extent, improving work efficiency measurement...

At present, data mining technology is continuously researched in science and application. With the rapid development of remote sensing satellite industry, especially launch satellites with high-resolution sensors, amount information obtained from images has increased dramatically, which largely promoted application various industries. This technique mines useable less complete accurate while ensuring low program complexity. In order to determine impact techniques on feature extraction...

黄铁矿是金矿床中一种重要的载金矿物,其所含微量元素特征可以反映成矿热液性质、矿床类型等关键信息。机器学习方法能高效处理海量的黄铁矿微量元素数据并进行相关研究,前人利用随机森林、决策树、神经网络等不同算法,训练了相关的分类器,但是仍存在训练金矿类型偏少、使用元素种类偏少、矿床类型判别效果不佳等问题。因此本文采用机器学习中的主成分分析方法,拟训练并建立一个能直观反映大部分金矿类型不同特征的判别图解,进而评估使用黄铁矿化学元素作为不同矿床类型判别器的稳健性。数据集中共收集了来自卡林型、浅成低温热液型、造山型、斑岩型、IOCG、SEDEX和VMS七种矿床类型、近百个矿床的6939套黄铁矿LA-ICP-MS微量元素数据。统计结果显示,卡林型和IOCG型金矿床中黄铁矿的Au、As、Cu、Se等微量元素富集程度最高,造山型和浅成低温型的较富集,VMS和SEDEX型矿床中个别元素显著富集,而斑岩型金矿床中黄铁矿的各微量元素含量普遍较低。通过数据预处理,选择十种微量元素,绘制了不同成因类型金矿床黄铁矿成分的二维判别图解,并选择4个矿床实例进行了验证判别。两张判别图解联用能较好的区分出卡林型、斑岩型...

Isolated DC/DC converters have the disadvantage of inefficiency, instability, magnetic bias and shoot-through problems, etc.They also influence other electrical devices severely in same power network.Therefore, a novel photovoltaic off-grid inverter based on boost converter is designed this paper.The following works been done study: to design circuit inverter, parameters simulate.The research paper has laid theoretical foundation for industrial applications.

The Ediacaran Dengying Formation dolostones were the crucial carrier of co-evolution between biota and environment before Cambrian Explosion solid mineral petroleum resources. Based on petrological mineralogical analyses, at Liaojiacao Section consists micritic, fine-crystalline medium-crystalline algal-bonded or algal-clastic dolostones. Moreover, micritic mostly retain original sedimentary structure with widespread microbial mats, algal spots, traces, other fossils. Recrystallization,...

The fragmentation of protected areas is a common issue in global conservation, which means new approach to planning and management needs be explored. In this paper, we proposed the concept group natural (GNPA) studied construction GNPAs. Firstly, spatial distribution characteristics 1363 (NPAs) Guangdong Province were qualitatively studied. overall pattern among NPAs mountain ranges, river basins, urbanization level economic density analyzed, relationship between physical geography social...

Combined with the development status of green building industry in our country, this paper builds evaluation index system building, and explores network relationship among indexes by introducing level analysis method, obtaining weight coefficient different index. Then on basis size each factor it determines influence degree primary which has a great system, so as to provide find out adapting various types.

In order to explore the relationship between water consumption (WC) and economic growth (EG) in China, this paper introduced concepts related with decoupling fields of resources environmental research define EG from WC. Furthermore, assessing approach was built up a coefficient proposed estimate degree. Afterwards, relations WC 1997 2008 were investigated. The results show strong agricultural GDP primary industry weak EG. It can be concluded that plays an important role improve degree