To understand the land use development trends in Shaanxi Province under different scenarios and effectively assess the spatiotemporal evolution of terrestrial ecological carbon stocks in Shaanxi Province under land use changes, the study used Markov-FLUS and InVEST models to analyze the impact of land use changes in Shaanxi Province from 2000 to 2020. The impact of carbon storage changes and the spatiotemporal changes in land use structure, carbon storage, and carbon density under three different scenarios were simulated and assessed in Shaanxi Province in 2025 and 2030. The results showed: ① The ROC values of various categories in the coupled Markov-FLUS model were all above 0.
View Article and Find Full Text PDFThe large-scale construction of new districts has led to severe soil heavy metal pollution. Therefore, taking Fengdong New District as the target research area, the descriptive statistics of heavy metal content characteristics and Kriging interpolation analysis have been conducted, and the potential ecological risk index and information diffusion theory were further combined to create an information diffusion model based on risk assessment. Finally, the pollution degree, ecological risk, and risk occurrence probability of Pb, Cu, Cd, and Hg were discussed.
View Article and Find Full Text PDFBMC Pregnancy Childbirth
February 2023
Background: A growing number of cytogenetic techniques have been used for prenatal diagnosis. This study aimed to demonstrate the usefulness of karyotyping, BACs-on-Beads (BoBs) assay and single nucleotide polymorphism (SNP) array in prenatal diagnosis during the second trimester based on our laboratory experience.
Methods: A total of 10,580 pregnant women with a variety of indications for amniocentesis were enrolled in this retrospective study between January 2015 and December 2020, of whom amniotic fluid samples were analysed in 10,320 women.
Background And Purpose: Rapid eye movement (REM) Rapid eye movement sleep behavior disorder (RBD) is a common non-motor symptom of PD. However, the association between the rs3910105 genotype and RBD in Parkinson's disease (PD) remains unclear.
Methods: This study used Parkinson's Progression Markers Initiative (PPMI) data and included 270 patients with newly diagnosed PD without RBD who were divided into rs3910105 C carriers (CC+CT; = 187) and TT carriers ( = 83).
To explore the micromechanism of the structural changes of anthracite due to heat accumulation by water and pyrite, during oxidation, anthracite with coal samples was selected in this work from Baijiao Coalmine, Sichuan, China. The samples were added with water of 1, 5, 10, 15, and 20 mass % and pyrite of 1, 2, 4, and 6 mass % and were conducted to experimented torts. As compared with the raw coal sample, the effects of water and pyrite on the microstructure of anthracite were studied.
View Article and Find Full Text PDFZhongguo Shi Yan Xue Ye Xue Za Zhi
June 2020
Objective: To analyze the genome-wide DNA methylation differences in umbilical cord blood nucleated red blood cells (NRBCs) between term and preterm infants by using the methylation gene chip technology, and to screen the genes of differential methylation and biological signaling pathways which may be related to the expression of γ-globin gene (HBG).
Methods: Umbilical cord bloods of eight term infants and eight preterm infants were collected, and NRBCs of each sample was isolated, then genome DNA was extracted and bisulfite conversion was performed. The DNA methylation sites were detected by using the Illumina 850K BeadChip.
J Matern Fetal Neonatal Med
November 2020
Although epidural analgesia is widely used during labor, its impact on breastfeeding has not yet reached a consensus. This retrospective cohort study was to investigate the association of patient-controlled epidural analgesia (PCEA) during labor with breastfeeding initiation and continuation. Medical records from 1 February, 2016 to 31 December, 2016 at Guangzhou Women and Children's Medical Center, China were reviewed for women received PCEA or not.
View Article and Find Full Text PDFDissolved organic nitrogen (DON) is an important portion of total dissolved nitrogen (TDN) transported to the coastal from land-based sources and its bioavailable moieties of DON are regarded as potentially important nitrogen sources for eutrophication in coastal environments. Based on the four field observations conducted in July, November 2012 and in March, May 2013 at the four sewage treatment plants (STPs) around the Jiaozhou Bay (JZB), the concentrations and compositions of total dissolved nitrogen (TDN) as well as total dissolved amino acids (TDAA) were analyzed, and the ratio of dissolved organic carbon (DOC) to DON and the composition and abundance of amino acids were regarded as indexes to evaluate the bioavailability of DON in STPs around JZB. The concentrations of TDN ranged from 413.
View Article and Find Full Text PDFPurpose: The protein encoded by sphingomyelin phosphodiesterase 1, acid lysosomal (SMPD1) is a lysosomal acid sphingomyelinase. While there are increasing evidences to suggest that lysosomal enzyme defects and Parkinson's disease (PD) have strong associations, and recently, SMPD1 p.L302P (c.
View Article and Find Full Text PDF