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Yi Li, Hua Zhang, Zongshan Zhao, Yong Tian, Kun Liu, Feifan Jie, Liang Zhu, Huanwen Chen
Particulate matters (PMs) emitted by automobile exhaust contribute to a significant fraction of the global PMs. Extractive atmospheric pressure chemical ionization mass spectrometry (EAPCI-MS) was developed to explore the molecular dependence of PMs collected from exhaust gases produced at different vehicle engine speeds. The mass spectral fingerprints of the organic compounds embedded in differentially sized PMs (e.g., 0.22-0.45, 0.45-1.00, 1.00-2.00, 2.00-3.00, 3.00-5.00, and 5.00-10.00μm) generated at different engine speeds (e...
May 2018: Journal of Environmental Sciences (China)
Linhua Zhang, Yu Qin, Zhiming Zhang, Fan Fan, Chenlu Huang, Li Lu, Hai Wang, Xu Jin, Hanxue Zhao, Deling Kong, Chun Wang, Hongfan Sun, Xigang Leng, Dunwan Zhu
The combination of chemotherapy and photothermal therapy in multifunctional nanovesicles has emerged as a promising strategy to improve cancer therapeutic efficacy. Herein, we designed new pH/reduction dual-responsive and folate decorated polymeric micelles (FA Co-PMs) as theranostic nanocarrier to co-encapsulate doxorubicin (DOX) and indocyanine green (ICG) for targeted NIR imaging and chemo-photothermal combination therapy. The Co-PMs exhibited nano-sized structure (∼100 nm) with good monodispersity, high encapsulation efficiency of both ICG and DOX, triggered DOX release in response to acid pH and reduction environment, and excellent temperature conversion with laser irradiation...
May 16, 2018: Acta Biomaterialia
Peng Liu, Ying Wei, Hai Liao, Yingying Fan, Ru Li, Nana Feng, Gaoxiong Duan, Demao Deng, Wei Qin
Premenstrual syndrome (PMS) is a menstrual cycle-related disorder. Although the precise pathophysiology is not fully understood, it is increasingly believed that the central nervous system plays a vital role in the development of PMS. The aim of this study is to elucidate specific functional connectivity between the thalamus and cerebral cortex. Resting-state functional magnetic resonance imaging (fMRI) data were obtained from 20 PMS patients and 21 healthy controls (HCs). Seed-based functional connectivity between the thalamus and six cortical regions of interest, including the prefrontal cortex (PFC), posterior parietal cortex, somatosensory cortex, motor cortex/supplementary motor area, temporal and occipital lobe, was adopted to identify specific thalamocortical connectivity in the two groups...
May 17, 2018: Brain Imaging and Behavior
Yong Feng, Hailong Li, Deli Wu, Changzhong Liao, Yiang Fan, Po-Heng Lee, Kaimin Shih
Supported metallic palladium (Pd) acts as a real catalyst for peroxymonosulfate (PMS) activation to produce highly oxidizing species. However, the species produced are surface-bound in nature, and their use for pollutant degradation requires an inert supporting material to minimize the surface scavenging effect. In this study, we synthesized Pd nanoparticles (NPs) on different supporting materials (Al2 O3 , TiO2 , SiO2 , g-C3 N4 , C, and TiC), and compared their reactivity toward PMS activation for the first time...
May 9, 2018: Chemosphere
Qingqing Ma, Lin Cui, Shuang Zhou, Yan Li, Weijie Shi, Shiyun Ai
In this work, we have developed a low-cost and green strategy for nanoscale zero-valent iron (ZVI) in situ encapsulated in lignin-derived hydrochar (Fe@HC) by a facile one-pot synthesis route. The as-synthesized Fe@HC was characterized for physicochemical properties by X-ray diffraction (XRD), X-ray photoelectron spectra (XPS), scanning electron microscopy (SEM), energy-dispersive spectroscopy (EDS), transmission electron microscope (TEM), thermal gravimetric analysis (TGA), and Fourier-transform infrared spectroscopy (FT-IR)...
May 14, 2018: Environmental Science and Pollution Research International
Federica Sacco, Bruno Paun, Oriol Lehmkuhl, Tinen L Iles, Paul A Iaizzo, Guillaume Houzeaux, Mariano Vázquez, Constantine Butakoff, Jazmin Aguado-Sierra
The aim of the present study is to characterize the hemodynamics of left ventricular (LV) geometries to examine the impact of trabeculae and papillary muscles (PMs) on blood flow using high performance computing (HPC). Five pairs of detailed and smoothed LV endocardium models were reconstructed from high-resolution magnetic resonance images (MRI) of ex-vivo human hearts. The detailed model of one LV pair is characterized only by the PMs and few big trabeculae, to represent state of art level of endocardial detail...
2018: Frontiers in Physiology
Jialin Hu, Fuzheng Zhao, Xu-Xiang Zhang, Kan Li, Chaoran Li, Lin Ye, Mei Li
Information is currently limited regarding the distribution of antibiotic resistance genes (ARGs) in smog and their correlations with airborne bacteria. This study characterized the diversity and abundance of ARGs in the particulate matters (PMs) of severe smog based on publicly available metagenomic data, and revealed the occurrence of 205 airborne ARG subtypes, including 31 dominant ones encoding resistance to 11 antibiotic types. Among the detectable ARGs, tetracycline, β-lactam and aminoglycoside resistance genes had the highest abundance, and smog and soil had similar composition characteristics of ARGs...
February 15, 2018: Science of the Total Environment
Shaodong Hou, Li Ling, Dionysios D Dionysiou, Yuru Wang, Jiajia Huang, Kaiheng Guo, Xuchun Li, Jingyun Fang
Halides and natural organic matter (NOM) are inevitable in aquatic environment and influence the degradation of contaminants in sulfate radical (SO4•‒)-based advanced oxidation processes. This study investigated the formation of chlorate in the co-exposure of SO4•‒, chloride (Cl‒), bromide (Br‒) and/or NOM in UV/persulfate (UV/PDS) and cobalt(II)/peroxymonosulfate (Co/PMS) systems. The formation of chlorate increased with increasing Cl‒ concentration in the UV/PDS system, however, in the Co/PMS system, it initially increased and then decreased...
May 10, 2018: Environmental Science & Technology
Aimal Khan, Shuhua Zou, Ting Wang, Jerosha Ifthikar, Ali Jawad, Zhuwei Liao, Ajmal Shahzad, Audrey Ngambia, Zhuqi Chen
Yolk shell Mn2O3@Mn5O8 was prepared through a facile synthetic procedure and was demonstrated to be a highly efficient and stable catalyst in peroxymonosulfate (PMS) activation for the catalytic degradation of organic contaminants. Mn2O3@Mn5O8 exhibits much improved activity compared with other classic manganese catalysts such as ε-MnO2, Mn2O3 and Mn3O4, and this performance was due to its yolk shell structure, mesoporous shell, well-defined interior voids, particular particle size and mixed valence states...
May 10, 2018: Physical Chemistry Chemical Physics: PCCP
Aleena Mohib, Amara Zafar, Areeba Najam, Hafsa Tanveer, Rehana Rehman
Objective The aim of this study was to investigate the existence, knowledge, and the attitude of female students towards premenstrual syndrome (PMS). Methods This cross-sectional study was conducted in three universities in Karachi, Pakistan. A total of 448 female students participated in the study. The clinical criterion of American College of Obstetricians and Gynecologists (ACOG) for PMS was used to assess the prevalence of PMS in the participants. The questionnaire was set in four parts, one each to assess the knowledge, the attitude, and practices regarding PMS and one to assess the gap between self-perceived PMS and actual PMS...
March 8, 2018: Curēus
Angelika Hüppe, Jana Langbrandtner, Winfried Häuser, Heiner Raspe, Bernd Bokemeyer
INTRODUCTION:  Assessment of disease activity in Crohn's disease (CD) and ulcerative colitis (UC) is usually based on the physician's evaluation of clinical symptoms, endoscopic findings, and biomarker analysis. The German Inflammatory Bowel Disease Activity Index for CD (GIBDICD ) and UC (GIBDIUC ) uses data from patient-reported questionnaires. It is unclear to what extent the GIBDI agrees with the physicians' documented activity indices. METHODS:  Data from 2 studies were reanalyzed...
May 9, 2018: Zeitschrift Für Gastroenterologie
Yi Wang, Qing-Song Zhou, Bo Zhou, Zhong-Yi Sun, Feng-Shuo Jin
Objective: To investigate the therapeutic efficacy and safety of Gujing Maisiha Tablets combined with natural vitamin E in the treatment of idiopathic asthenospermia. METHODS: This study included 135 outpatients with idiopathic asthenospermia received in our hospital from February 2015 to January 2016. We randomly divided them into a treatment group (n = 65, aged 22-44 [mean 32.8] yr) and a control group (n = 55, aged 21-43 [mean 33.7] yr) to be treated with Gujing Maisiha Tablets combined with natural vitamin E or natural vitamin E only, both for 90 days...
December 2017: Zhonghua Nan Ke Xue, National Journal of Andrology
A F Favela-Mendoza, G Martínez-Cortes, M M Romero-Prado, E M Romero-Tejeda, M C Islas-Carbajal, M Sosa-Macias, I Lares-Asseff, H Rangel-Villalobos
WHAT IS KNOWN AND OBJECTIVE: CYP2C19 genotypes presumably allow the prediction of the metabolizer phenotypes: poor (PMs), extensive (EMs) and ultra-rapid (UMs). However, evidence from previous studies regarding this predictive power is unclear, which is important because the benefits expected by healthcare institutions and patients are based on this premise. Therefore, we aimed to complete a formal evaluation of the diagnostic value of CYP2C19 and CYP3A4 genes for predicting metabolizer phenotypes established by omeprazole (OME) administration in 118 healthy children from Jalisco (western Mexico)...
May 7, 2018: Journal of Clinical Pharmacy and Therapeutics
Seon-Pil Jin, Zhenyu Li, Eun Kyung Choi, Serah Lee, Yoen Kyung Kim, Eun Young Seo, Jin Ho Chung, Soyun Cho
BACKGROUND: Particulate matter (PM) is an integral part of air pollution, which is a mixture of particles suspended in the air. Recently, it has been reported that PM is associated with increased risks of skin diseases, especially atopic dermatitis in children. However, it is unclear if PM directly goes into the skin and what mechanisms are involved in response to PM. OBJECTIVE: To see whether PM could penetrate into the barrier-disrupted skin, produce reactive oxygen species (ROS), and elicit an inflammatory response...
April 30, 2018: Journal of Dermatological Science
Xiao Li, Jiayuan Yu, Guixiang Li, Hui Liu, Aili Wang, Linjing Yang, Weijia Zhou, Benli Chu, Shengwei Liu
Constructing hierarchical structure is an effective approach to improve the activities of catalysts. Herein, a novel hierarchical structure of TiO2 nanodots anchored on N-doped carbon nanotubes encapsulated Co nanoparticles (TiO2 /Co@NCT) was synthesized by a simple pyrolysis method. Their catalytic performances were examined in the oxidative and light-assisted degradation of recalcitrant pollutants in the presence of the peroxymonosulfate (PMS). The Orange II removal efficiency within 15 min reached about 98...
April 27, 2018: Journal of Colloid and Interface Science
Yifu Li, Xingzhong Yuan, Dongbo Wang, Hou Wang, Zhibin Wu, Longbo Jiang, Dan Mo, Guojing Yang, Renpeng Guan, Guangming Zeng
In this study, zero valent iron (ZVI) activated peroxymonosulfate (PMS) as novel technique (i.e. ZVI-PMS technology) was employed to enhance sludge dewatering. In optimal sludge dewatering conditions of ZVI and KHSO5 dosages, the specific resistance to filtration (SRF) was reduced by 83.6%, which was further decreased to 90.6% after combination of ZVI-PMS with thermal treatment at 50 °C (i.e. ZVI-PMS-T technology). Subsequently, the ESR spectrum and quenching tests demonstrated that OH, rather than SO4 - , was predominant radicals in ZVI-PMS conditioning...
April 21, 2018: Bioresource Technology
J Rodríguez-Chueca, C García-Cañibano, R-J Lepistö, Á Encinas, J Pellinen, J Marugán
This study explores the enhancement of UV-C tertiary treatment by sulfate radical based Advanced Oxidation Processes (SR-AOPs), including photolytic activation of peroxymonosulfate (PMS) and persulfate (PS) and their photocatalytic activation using Fe(II). Their efficiency was assessed both for the inactivation of microorganisms and the removal or micropollutants (MPs) in real wastewater treatment plant effluents. Under the studied experimental range (UV-C dose 5.7-57 J/L; UV-C contact time 3 to 28 s), the photolysis of PMS and PS (0...
April 21, 2018: Journal of Hazardous Materials
Mengdi Jiang, Qingyue Zhang, Yuefei Ji, Deyang Kong, Junhe Lu, Xiaoming Yin, Quansuo Zhou, Corinne Ferronato, Jean-Marc Chovelon
Peroxymonosulfate (PMS) is increasingly used as an oxidant for in situ remediation of organic contaminants in soil and groundwater. In this study we demonstrated that sulfamethazine (SMZ) could be transformed by PMS in the absence of any activators. Such transformation was ascribed to the oxidation by PMS per se, rather than free radicals (SO4 - or HO), superoxide (O2 - ), or singlet oxygen (1 O2 ). The aniline moiety of SMZ molecule was the reactive site for PMS oxidation, leading to the formation of nitrated products...
May 1, 2018: Science of the Total Environment
Yong Feng, Changzhong Liao, Lingjun Kong, Deli Wu, Yiming Liu, Po-Heng Lee, Kaimin Shih
Ferrous ions (Fe2+ ) are environmentally friendly materials but show extremely inefficient persulfate activation. Polymeric graphitic carbon nitride (g-C3 N4 ) has recently shown potential to activate persulfates, but the process requires intense light irradiation. To overcome these drawbacks, we designed an innovative heterogeneous iron catalyst by doping Fe into g-C3 N4 (Fe-g-C3 N4 ) and used it to activate peroxymonosulfate (PMS) for degradation of pollutant phenol. The catalysts synthesized were fully characterized with various techniques, such as X-ray diffraction, Mössbauer spectroscopy, and X-ray photoelectron spectroscopy...
April 25, 2018: Journal of Hazardous Materials
Tao Li, Sheng Xie, Yan Tan, Zi-Ping Xie, Wan-Rong Wang, Heng Li
Objective: To explore the feasibility, safety and clinical effect of mid-frequency transcutaneous electrical acupoint stimulation (TEAS) combined with oral tamoxifen (TAM) in the treatment of oligoasthenozoospermia. METHODS: We randomly and equally assigned 120 patients with idiopathic oligoasthenozoospermia to receive oral TAM, mid-frequency TEAS, or TAM+TEAS, all for 8 weeks. Before and after treatment, we recorded the semen volume, total sperm count, sperm concentration, sperm motility, percentage of progressively motile sperm (PMS), and the levels of follicle-stimulating hormone (FSH), luteotrophic hormone (LH) and testosterone (T) in the peripheral serum and compared these parameters among the three groups of patients...
October 2017: Zhonghua Nan Ke Xue, National Journal of Andrology
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