Summary Microplastics have been proposed as emerging threats for terrestrial systems they may potentially alter the physicochemical/biophysical soil environments. Due to variety of properties microplastics and soils, microplastic‐induced effects in ecosystems are greatly manifold. Here, we studied three polymer (polyamide‐6, polyethylene, polyethylene terephthalate) on with four different types. The success patterns, interaction relationships, assembly processes bacterial communities were...

Effective transformation from paraelectric to a high fraction of ferroelectric phase is crucial produce piezoelectric materials with constant for broad applications. In polyvinylidene fluoride (PVDF) thin films, both mechanical stretching and electric poling processes have been found be critical in the α → β transformation. However, PVDF fibers fabricated by electrospinning process, roles not well explored. Here, properties forcespinning, spinning process without poling, characterized...

The agro-pastoral ecotone serves as an important ecological transition zone between grassland and cropland. It plays a crucial role in providing forage maintaining the security of Northern China. China has initiated many restoration projects ecotone. Separating affecting factors anthropogenic activities natural change on may help guide future projects. This study investigated over Inner Mongolia (APEI) using land use data, vegetation index, monthly climate social economic data from 2010 to...

We studied changes in the concentrations of aggregate-cementing agents after different reclamation times and with fertilization regimes, as well formation mechanism aggregates reclaimed soil, to provide a theoretical basis for rapid soil fertility subsidence area coal mines Shanxi province, China. In this study, samples 0-20 cm depth were collected from four treatments long-term experiment started 2008: no fertilizer (CK), inorganic (NPK), chicken manure compost (M), 50% plus (MNPK). The...

Molecular and stable carbon isotopic compositions of 32 crude oils from the Kekeya area Southwest Depression, Tarim Basin, were analyzed comprehensively to clarify oil groups trace sources. The results indicate that lacustrine shale sequences within Upper-Middle Permian Pusige Formation (P3–2p) are major effective sources; thermal maturation effects exert crucial impact on geochemical oils. In structural belt, produced Lower-Neogene, Middle-Paleogene Middle-Cretaceous sandstone reservoirs...

Soil organic carbon (SOC) plays a key role in improving soil quality and optimizing crop yield. Yet little is known about the fate of macroaggregates (>0.25 mm) under long-term fertilization their relative importance SOC sequestration reclaimed calcareous soil. Therefore, effects mineral fertilizers manure on mechanisms (OC) stabilization were investigated this study. Four treatments used: unfertilized control (CK), fertilizer (NPK), compost chicken alone (M), plus (MNPK). Samples from 0–20...

Abstract The uncertainty surrounding the thermal regimes of ultra‐deep strata in Tarim and Sichuan basins, China, is unfavorable for further hydrocarbon exploration. This study summarizes contrasts present‐day paleo heat flow, geothermal gradient deep formation temperatures basins. average flow basins are 42.5 ± 7.6 mW/m 2 53.8 , respectively, reflecting characteristics ‘cold’ ‘warm’ with unified depths 0–5,000 m, 0–6,000 m 0–7,000 Basin 21.6 2.9 °C/km, 20.5 2.8 °C/km 19.6 while 0–6,000m...

Abstract The organic matter (OM) enrichment mechanisms and depositional environment characteristics of lacustrine source rocks in the western Bozhong Sag, Bohai Bay Basin Northeast China remain controversial. To address these issues, based on Rock‐Eval pyrolysis, kerogen macerals, H/C O/C ratios, GC‐MS, major trace elements, Dongying Formation Member (Mbr) 3 (E d ), Shahejie mbrs 1 2 s 1+2 Mbr ) Sag were studied. above methods used to reveal their geochemical properties, OM origins...

Wildlife diversity after Wenchuan Earthquake: a case from Guangguangshan Valley of Longxi-Hongkou National Nature Reserve, Southwest China Zhishu Xiao, Li Hu, Xiang Wang, Tao Shang, Dahai Zhu, Zhilong Zhao, Xiaoqun Huang 1 State Key Laboratory Integrated Management Pest Insects and Rodents in Agriculture, Institute Zoology, Chinese Academy Sciences, Beijing 100101 2 Bureau Dujiangyan, Sichuan 611830

In this article, silicon on insulator (SOI) was fabricated by separation implanted oxygen (SIMOX) layer transfer process. The thickness uniformity of the top Si (superficial SOI) evaluated spectroscopic ellipsometry remains constant through etch-stop thinning A defect-free observed transmission electron microscopy, as well its atomic-scale sharp interface that adjacent to buried oxide (BOX) layer. Si/BOX properties, including upper BOX surface roughness and state density, were investigated...

摘要:

When Shenzhou spaceship docked onto the space station, it will be set as dormancy mode. Space station controls and manages electrical power of spacecrafts combination. In RVD mission Tiangong-1, proximal sampling feedback voltage control, grid-connected supply architecture combination, was designed applied in orbit. This prototype management combination is a successful test verification for its application future manned station.

The controlling factors of organic-rich shale accumulation is essential for the exploration and development oil gas resources. sedimentary environment plays a vital role in formation sediments lacustrine facies. This article unravels mineralogy, geochemistry, paleoenvironmental evolution during deposition Paleogene Shahejie Formation (Es3L). It discusses effects paleoclimate, paleosalinity, paleoredox conditions, paleowater depth, paleoproductivity on organic matter (OM) enrichment. Finally,...

To complement the lack of information on HIV epidemiological trends and spatial distribution in Bengbu. Demographic statistics used Cochran-Armitage test, autocorrelation was to detect disease clusters, clustering diseases determined by spatial-temporal scans, regression examine correlation between socioenvironmental factors. 16.35% were 25–29 years old, 8.56% 55–59 old 7.60% aged 65–69 years. There have been significant changes prevalence HIV/AIDS among age, education time, marital status...

In order to clarify the evolution path of sudden traffic accidents under special state "construction while opening traffic" in expressway reconstruction and expansion projects, improve scientificity emergency command decision-making pertinence disposal measures, this paper first analyzes 12 accident scenarios 4 typical risk events interactive influence construction operations operations. After that, key scenario elements are selected based on matrix, representation method is determined by...

Abstract The focal area of this study was the northern South China Sea (NSCS; 18.5°-22.5°N, 1.0°-8.0°E), located on northwestern shelf SCS. surface p CO 2 ( 2w ), sea temperature (SST) and salinity (SSS) measured by continuous measurement system during four field surveys to show their spatiotemporal variations in NSCS. Low southwestern region PRE were observed seasons, particularly spring summer. Pearl River diluted water (PRDW) discharged a large amount nutrients into nearshore waters,...

OBJECTIVE: To explore biological exposure markers, we investigated the chromium content in peripheral erythrocytes from occupational population with broad ranges of soluble chromate exposure, as candidate biomarker may provide scientific evidence for health risk assessment chromate-exposed population. METHODS: A cross-sectional study was conducted exposed workers employed at a factory district Jinan city, Shandong Province. The studied contained 114 different processes plants, which included...