[Spectral Characteristics and Sources of Dissolved Organic Matter in Inflow Rivers of Baiyangdian Lake Water in Summer Flood Season].

DOM is the largest reservoir of organic carbon in the world, and it plays a crucial role in the biogeochemical cycles of natural water bodies. A river is a transition area connecting source water and receiving water that controls the DOM exchange between them. Therefore, in this study, ultraviolet visible spectroscopy (UV-vis) and three-dimensional fluorescence spectroscopy (EEMs) combined with parallel factor analysis (PARAFAC) were used to analyze the spectral characteristics and sources of dissolved organic matter in the Fuhe River, Xiaobai River, Baigouyin River, and Puhe River of Baiyangdian.

Development and validation of a machine learning model for differential diagnosis of malignant pleural effusion using routine laboratory data.

Background: The differential diagnosis of malignant pleural effusion (MPE) and benign pleural effusion (BPE) presents a clinical challenge. In recent years, the use of artificial intelligence (AI) machine learning models for disease diagnosis has increased.

Objective: This study aimed to develop and validate a diagnostic model for early differentiation between MPE and BPE based on routine laboratory data.

The effects of four primers and two cement types on the bonding strength of zirconia.

Background: To evaluate the effects of four ceramic primers and two cement types on the bonding strength and durability between zirconia and resin cement.

Methods: A total of 115 polished and air-abraded zirconia blocks were randomly divided into five groups (with 23 in each group) to test the performance of various primers. Meanwhile, all primer samples were divided into two subgroups randomly to measure the difference between the two cement types.

The effect of adhesive surface with porcelain sintering and two silane coupling agents on the adhesive properties of zirconia.

Background: To explore the effect of adhesive surface with porcelain sintering and different silane coupling agents on adhesive properties of zirconia ceramics.

Methods: Zirconia blocks (n=72) were randomly divided into two large groups (n=36) according to whether the adhesive surface was treated with sintered porcelain: N (no porcelain sintering), P (porcelain sintering). Then, according to different silane coupling agents, each group was randomly divided into three small groups, six small groups in total (n=12): NN (no porcelain sintering and agent), NM (no porcelain sintering + Monobond-S), NC (no porcelain sintering + Clearfil Repair); PN (porcelain sintering + no agent), PM (porcelain sintering + Monobond-S), PC (porcelain sintering + Clearfil Repair).

Enhancing the Rapid Na-Storage Performance via Electron/Ion Bridges through GeS/Graphene Heterojunction.

Hybridizing carbonous matrix into metal sulfide is confirmed as an effective strategy to enhance electrode conductance and structure stability. However, a comprehensive understanding of the interface reaction mechanism between active materials and carbon substrate is still urgently needed. Based on the band energy theory, a route to enhance the rate ability for electrode is exploited on regulating interfaces of substrates/active heterojunction.

Discrimination of vertebral fragility fracture with lumbar spine bone mineral density measured by quantitative computed tomography.

Background/objective: This study is a case-control study to explore risk and protective factors, including clinical data and bone mineral density (BMD), affecting vertebral body fragility fracture in elderly men and postmenopausal women. In addition, we investigate the effectiveness of lumbar spine BMD by quantitative computed tomography (QCT) in discriminating vertebral fragility fracture.

Methods: In this case-control study, 52 males and 198 females with vertebral fragility fracture were compared with sex- and age-matched healthy controls to analyse the risk factors that may affect vertebral fragility fracture.

Effect of Nb and F Co-doping on LiMnNiCoO Cathode Material for High-Performance Lithium-Ion Batteries.

The LiMnNbCoNiOF ( = 0, 0.01, 0.03, 0.

Effect of Ti-doping on the electrochemical performance of sodium vanadium(iii) phosphate.

NaV Ti (PO) ( = 0.00, 0.05, 0.

Chinese Herbal Medicine for Osteoporosis: A Meta-analysis of Randomized Controlled Trials.

Osteoporosis is a major public health problem in the elderly population. Several studies have suggested that Chinese herbal medicine has antiosteoporotic activities that might be beneficial for osteoporosis. This study aimed to assess the effectiveness of Chinese herbal medicine in osteoporosis patients.

Increased frequency of self-fertile isolates in Phytophthora infestans may attribute to their higher fitness relative to the A1 isolates.

Knowledge of population dynamics of mating types is important for better understanding pathogen's evolutionary potential and sustainable management of natural and chemical resources such as host resistances and fungicides. In this study, 2250 Phytophthora infestans isolates sampled from 61 fields across China were assayed for spatiotemporal dynamics of mating type frequency. Self-fertile isolates dominated in ~50% of populations and all but one cropping region with an average frequency of 0.

VOPO4 nanosheets as anode materials for lithium-ion batteries.

VOPO4 nanosheets are successfully synthesized using a hydrothermal method followed by calcination. The XRD results reveal that obtained products are crystallized in the orthorhombic VOPO4 phase. SEM and TEM images demonstrate that VOPO4 products possess unique nanosheet morphology.

Electrochemical properties of VPO4/C nanosheets and microspheres as anode materials for lithium-ion batteries.

VPO4/C nanosheets and microspheres are successfully synthesized via a hydrothermal method followed by calcinations. The XRD results reveal that the obtained products both have an orthorhombic VPO4 phase. The SEM and TEM images demonstrate that nanosheets and spherical morphology can be obtained by controlling the synthesis conditions.

[Molecular epidemiological study on HIV/AIDS under the follow-up program in Zhejiang province in 2009].

Objective: To analyze the molecular epidemiological characteristics on HIV infectors/AIDS patients (HIV/AIDS) under a follow-up program in Zhejiang province in 2009.

Methods: 303 cases were randomly sampled. Information on the cases was collected and followed by genomic DNA extraction.

[Molecular characteristics of HIV-1 CRF01_AE strains in Zhejiang province in 2009].

Objective: To analyze the molecular epidemiological characteristics of HIV-1 subtype CRF01_AE strains being prevailed among HIV/AIDS in Zhejiang province in 2009.

Methods: A total of 303 subjects were identified by stratified random sampling among HIV infected individuals in Zhejiang province in 2009. Gag fragments of the HIV-1 strains were amplified by nested polymerase chain reaction from the DNA extracted from whole blood of HIV-1 infected individuals.

[Survey of HIV drug resistance threshold in Zhejiang province from 2009 to 2011].

Objective: To survey the prevalence of drug resistant HIV in Zhejiang province in 2009-2011.

Methods: WHO truncated sequential sampling technique was adopted annually by using 63, 62 and 57 samples of newly diagnosed as HIV positive and aged 16-25 years in Hangzhou, Ningbo and Wenzhou from 2009 to 2011, respectively. RNA was prepared and HIV pol region was amplified by RT-PCR and nested PCR.

[Relationship between strain subtypes and transmission of HIV infection within marriage-based immigrant women in rural area of Zhejiang province].

Objective: To analyze the relationship between strain subtypes and transmission of HIV infection on marriage-based immigrant women, their spouses and children in rural area of Zhejiang province.

Methods: Marriage-based immigrant women with HIV infection, their HIV infected spouses and children in rural area in Zhejiang province, were selected as study objects. Analysis on genetic sequence and epidemiologic information was carried out.

[Subtype and transmission of HIV strain in both HIV infected spouses in Zhejiang province].

Objective: To analyse the subtype and transmission of HIV strain in both HIV infected spouses.

Methods: Reported both HIV infected spouses were selected as objects. Analysis on genetic sequence and high risk behaviors was carried out.

[Genotypic drug-resistance of HIV-1 CRF01_AE in Zhejiang province, 2004-2007].

Objective: To study the genotypic drug-resistant mutation among treat-naïve or treated patients infected with HIV-1 CRF01_AE in Zhejiang province during 2004-2007.

Methods: HIV-1 pol amplicons (PR + RT) from 13 treated and 43 treat-naïve patients were obtained by reverse transcription-polymerase chain reaction (RT-PCR). The sequences were analyzed for genotypic antiretroviral resistance through online tools (http://hivdb.

[Rapid simultaneous detection of Salmonella and Shigella using modified molecular beacons and real-time PCR].

Objective: Dual detection of Salmonella and Shigella using modified molecular beacons and real-time PCR was developed. The established method was applied to rapid diagnosis of Salmonella and Shigella' food poisoning, and for routine monitoring programs.

Methods: Two sets of primers were designed based on the core sequence of invA gene and ssaR gene published on GenBank to detect Salmonella, and ipaH gene were selected to detect Shigella.