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https://read.qxmd.com/read/30763862/effect-of-torrefaction-on-pinewood-pyrolysis-kinetics-and-thermal-behavior-using-thermogravimetric-analysis
#1
Qing He, Lu Ding, Yan Gong, Weifeng Li, Juntao Wei, Guangsuo Yu
Torrefaction is a promising pretreatment technology for biomass thermochemical conversion. In this study, pinewood (PW) and PW250 (torrefied at 250 °C) were prepared for pyrolysis. Torrefaction was carried out in a fixed bed reactor and the pyrolysis was studied by thermogravimetric analyzer using six different heating rates. The results showed that the content of hemicellulose in biomass decreased while cellulose and lignin increased after torrefaction. Moreover, the C-O peaks of torrefied biomass was strengthened in FTIR spectrum and the crystallinity degree was enhanced according to XRD analysis...
January 30, 2019: Bioresource Technology
https://read.qxmd.com/read/30763861/lymphoepithelial-cyst-of-the-pancreas-a-case-report-and-summary-of-imaging-features-of-pancreatic-cysts
#2
Yosuke Namba, Akihiko Oshita, Takashi Nishisaka, Maiko Namba, Tamito Sasaki, Yasuhiro Matsugu, Toshiyuki Itamoto
INTRODUCTION: A lymphoepithelial cyst (LEC) of the pancreas is a benign and rare lesion that is difficult to diagnose preoperatively based on imaging studies. PRESENTATION OF CASE: We report a case of a 49-year-old man who presented with weight loss and diarrhea. The serum carcinoembryonic antigen and carbohydrate antigen 19-9 levels were slightly elevated to 6.7 ng/mL (reference value <5.0 ng/mL) and 45 U/mL (reference value <37 U/mL), respectively...
January 30, 2019: International Journal of Surgery Case Reports
https://read.qxmd.com/read/30763471/female-low-dose-tip-syringes-increased-complexity-of-use-may-compromise-dosing-accuracy-in-paediatric-patients
#3
Keliana O'Mara, Sarah Jane Gattoline, Christopher T Campbell
WHAT IS KNOWN AND OBJECTIVE: The International Organization for Standardization (ISO) created enteral device specifications to reduce tubing misconnections. The Global Enteral Device Supplier Association (GEDSA) supports a female design: standard and low dose tip (LDT). Concerns include increased complexity of use with adapters, dosing accuracy and workflow. No peer-reviewed studies have evaluated dosing accuracy of the complete female system with adapters. The objective of this study was to compare dosing accuracy of the female design to legacy syringes...
February 14, 2019: Journal of Clinical Pharmacy and Therapeutics
https://read.qxmd.com/read/30762765/the-correlation-between-oxidative-stress-level-and-intra-abdominal-fat-in-obese-males
#4
Xiao-Jiao Jia, Lan-Xiang Liu, Yi-Ming Tian, Rui Wang, Qiang Lu
This study aims to investigate the correlation between oxidative stress and intra-abdominal fat (IAF) in obese young and middle-aged males.The present study included 136 male examinees in the Examination Center of the First Hospital of Qinhuangdao from October 10, 2015 to December 10, 2015. Then, clinical data, oxidative stress indices (8-iso-prostaglandin F2α [8-iso-PGF2α], malondialdehyde [MDA], and superoxide dismutase [SOD]), and IAF area were recorded. All subjects were assigned into 3 groups according to body mass index (BMI): obese group (BMI ≥ 28 kg/m, 43 subjects), overweight group (24 ≤ BMI < 28 kg/m, 46 subjects), and control group (BMI < 24 kg/m, 47 subjects)...
February 2019: Medicine (Baltimore)
https://read.qxmd.com/read/30761172/identification-of-three-iso-flavonoid-glucosyltransferases-from-pueraria-lobata
#5
Xin Wang, Changfu Li, Zilin Zhou, Yansheng Zhang
(Iso)flavonoids are one of the largest groups of natural phenolic products conferring great value to the health of plants and humans. Pueraria lobata , a legume, has long been used in Chinese traditional medicine. (Iso)flavonoids mainly present as glycosyl-conjugates and accumulate in P. lobata roots. However, the molecular mechanism underlying the glycosylation processes in (iso)flavonoid biosynthesis are not fully understood. In the current study, three novel UDP-glycosyltransferases (PlUGT4, PlUGT15, and PlUGT57) were identified in P...
2019: Frontiers in Plant Science
https://read.qxmd.com/read/30761131/dendritic-cell-targeting-using-a-dna-vaccine-induces-specific-antibodies-and-cd4-t-cells-to-the-dengue-virus-envelope-protein-domain-iii
#6
Arthur Baruel Zaneti, Marcio Massao Yamamoto, Fernando Bandeira Sulczewski, Bianca da Silva Almeida, Higo Fernando Santos Souza, Natália Soares Ferreira, Denicar Lina Nascimento Fabris Maeda, Natiely Silva Sales, Daniela Santoro Rosa, Luís Carlos de Souza Ferreira, Silvia Beatriz Boscardin
Dengue fever has become a global threat, causing millions of infections every year. An effective vaccine against all four serotypes of dengue virus (DENV) has not been developed yet. Among the different vaccination strategies available today, DNA vaccines are safe and practical, but currently induce relatively weak immune responses in humans. In order to improve immunogenicity, antigens may be targeted to dendritic cells (DCs), the main antigen presenting cells and orchestrators of the adaptive immune response, inducing T and B cell activation...
2019: Frontiers in Immunology
https://read.qxmd.com/read/30760978/matured-hop-bitter-acids-in-beer-improve-lipopolysaccharide-induced-depression-like-behavior
#7
Takafumi Fukuda, Rena Ohya, Keiko Kobayashi, Yasuhisa Ano
Recent studies have demonstrated a close association between neural inflammation and development of mental illnesses, such as depression. Clinical trials have reported that treatment with non-steroidal anti-inflammatory drugs is associated with reduced risk of depression. Moreover, nutritional approaches for the prevention and management of depression have garnered significant attention in recent years. We have previously demonstrated that iso-α-acids (IAAs)-the bitter components in beer-suppress hippocampal microglial inflammation, thereby improving cognitive decline...
2019: Frontiers in Neuroscience
https://read.qxmd.com/read/30760654/prognostic-value-of-left-atrial-size-and-functional-indices-measured-by-3-dimensional-speckle-tracking-analysis
#8
Miki Tsujiuchi, Takenori Yamauchi, Mio Ebato, Hideyuki Maezawa, Ayaka Nogi, Naoko Ikeda, Takuya Mizukami, Sakura Nagumo, Yoshitaka Iso, Toshio Nakadate, Akatsuki Kokaze, Hiroshi Suzuki
BACKGROUND: The prognostic value of indices for left atrial volumes (LAV) and reservoir function measured by 3D speckle-tracking analysis (3DSTA) has not been determined. Methods and Results: LA maximal and minimal volume indices (LAVImax, LAVImin), and LA emptying fraction (LAEmpF) were measured via 2D echocardiography (2DE) and 3DSTA in 514 patients (62% male, mean age: 66±15 years) with various cardiovascular diseases. Two cutoff values using normal±2SD (cutoff criterion 1) and receiver-operating characteristic analysis (cutoff criterion 2) were evaluated...
February 13, 2019: Circulation Journal: Official Journal of the Japanese Circulation Society
https://read.qxmd.com/read/30759452/mif-inhibition-enhances-pulmonary-angiogenesis-and-lung-development-in-congenital-diaphragmatic-hernia
#9
Shahana Perveen, Kamesh Ayyasola, Nahla Zagloul, Hardik Patel, Kanta Ochani, David Orner, Helene Benveniste, Michael Salerno, Paul Vaska, Zhang Zuo, Yousef Alabed, Mansoor Nasim, Edmund J Miller, Mohamed Ahmed
BACKGROUND: Congenital diaphragmatic hernia (CDH) is a complex birth anomaly with significant mortality and morbidity. Lung hypoplasia and persistent pulmonary hypertension (PPHN) limit survival in CDH. Macrophage migration inhibitory factor (MIF), a key regulator of innate immunity, is involved in hypoxia-induced vascular remodeling and PPHN. We hypothesized that antenatal inhibition of MIF in CDH fetuses, would reduce vascular remodeling, and improve angiogenesis and lung development...
February 13, 2019: Pediatric Research
https://read.qxmd.com/read/30759315/revisiting-a-historic-concept-using-quantum-crystallography-are-phosphate-sulfate-and-perchlorate-anions-hypervalent
#10
Malte Fugel, Lorraine A Malaspina, Rumpa Pal, Sajesh P Thomas, Ming W Shi, Mark A Spackman, Kunihisa Sugimoto, Simon Grabowsky
There are many examples of atoms in molecules that violate Lewis' octet rule, since they have more than four electron pairs assigned to their valence. These atoms are referred to as being hypervalent. However, hypervalency may be regarded as an artifact arising from Lewis' description of molecules, which is based on the assumption that electrons are localized in 2-center 2-electron bonds and lone pairs. In the present paper, we examine the iso-electronic phosphate (PO₄³¯), sulfate (SO₄²¯) and perchlorate (ClO₄¯) anions with respect to the concept of hypervalency...
February 13, 2019: Chemistry: a European Journal
https://read.qxmd.com/read/30759292/cohnella-candidum-sp-nov-radiation-resistant-bacterium-from-soil
#11
SooHyun Maeng, Myung Kyum Kim, Jun Hwee Jang, Hana Yi, Gayathri Subramani
A Gram-stain positive, endospore-forming, circular, convex, cream colored, designated strain 18JY8-7T , was isolated from soil collected in Jeju Island, South Korea. Phylogenetic analysis using 16S rRNA gene sequences showed that strain 18JY8-7T formed a distinct lineage within the family Paenibacillaceae (order Bacillales, class Bacilli), and is closely related to Cohnella rhizosphaerae (96.1%, sequence similarity) and Cohnella xylanilytica (96.0%). Optimal growth occurred at 30 °C, pH 6.5 and in the absence of NaCl...
February 13, 2019: Antonie Van Leeuwenhoek
https://read.qxmd.com/read/30758644/pedobacter-pollutisoli-sp-nov-isolated-from-tetrabromobisphenol-a-contaminated-soil
#12
Yang Mu, Zhuang Ke, Chen-Xi Feng, Xiao-Wei Wang, Xiao-Wen Wang, Hong-Mei Wang, Qing Chen, Jian He
A Gram-stain negative, strictly aerobic, non-spore forming, non-motile, rod-shaped bacterium, designated TBBPA-24T , was isolated from tetrabromobisphenol A-contaminated soil in China. Phylogenetic analysis based on the 16S rRNA gene sequences showed that strain TBBPA-24T was most closely related to Pedobacter nanyangensis Q4T (96.5%) and Pedobacter 'zeaxanthinifaciens' TDMA-5T (96.1%). Chemotaxonomic analysis revealed that strain TBBPA-24T possessed MK-7 as the major respiratory quinone and lipid, aminolipid, phospholipid, phosphatidylethanolamine, and phosphoaminolipid as the major polar lipid...
February 13, 2019: Current Microbiology
https://read.qxmd.com/read/30758282/taibaiella-helva-sp-nov-isolated-from-farmland-soil-in-china
#13
Ling-Ling Chen, Ting Hu, Zi-Yu Xing, Jia-Sen Lu, Han Yang, Xing Huang
A yellow-coloured bacterial strain, designated F-4T , was isolated from a farmland soil sample from Qianshan, Anhui province, China. Strain F-4T was Gram-stain-negative, strictly aerobic, oval-shaped, motile (by gliding) and non-spore-forming. Growth occurred at 20-35 °C (optimum, 30 °C), at pH 6.0-8.0 (pH 7.0) and with 0-1.0 % (w/v) NaCl (0 %). Phylogenetic analysis based on 16S rRNA gene sequences showed that strain F-4T belonged to the genus Taibaiella. 16S rRNA gene sequence similarity values between strain F-4T and the type strains of the three recognized species of the genus Taibaiella, Taibaiella koreensis KACC 17171T , Taibaiella soli KCTC 42277T and Taibaiella chishuiensis JCM 19637T , were 98...
February 13, 2019: International Journal of Systematic and Evolutionary Microbiology
https://read.qxmd.com/read/30758281/lysobacter-psychrotolerans-sp-nov-isolated-from-soil-in-the-tianshan-mountains-xinjiang-china
#14
Yang Luo, Hongqiang Dong, Meng Zhou, Yaolong Huang, Hua Zhang, Wenliang He, Hongmei Sheng, Lizhe An
A novel aerobic bacterial strain, designated ZS60T , with long, rod-shaped, gram-staining-negative, aerobic cells was isolated from the soil in the Tianshan Mountains, Xinjiang, China. Phylogenetic analysis based on its 16S rRNA gene sequence indicated that strain ZS60T was affiliated with the genus Lysobacter, and was most closely related to Lysobacter daejeonensis GH1-9T (96.9 %), Lysobacter caeni BUT-8T (96.8 %) and Lysobacter ruishenii CTN-1T (96.7 %). The average nucleotide identity values between strain ZS60T , L...
February 13, 2019: International Journal of Systematic and Evolutionary Microbiology
https://read.qxmd.com/read/30755738/in-vitro-activities-of-antimicrobial-peptides-and-ceragenins-against-legionella-pneumophila
#15
A Seher Birteksoz-Tan, Zuhal Zeybek, Mayram Hacioglu, Paul B Savage, Cagla Bozkurt-Guzel
Legionella pneumophila is a waterborne intracellular pathogenic bacterium, the most frequent cause of human legionellosis and a relatively common cause of community-acquired and nosocomial pneumonia. Some legionellosis outbreaks are related to the presence of biofilms, which provide a reservoir for L. pneumophila strains. We investigated the in vitro activities of antibiotics; erythromycin and doxycycline, antimicrobial peptides AMPs; melittin, LL-37 and CAMA (cecropin A (1-7)-Melittin A (2-9) and ceragenins; CSA-8, CSA-13, CSA-44, CSA-131 and CSA-138 against L...
February 12, 2019: Journal of Antibiotics
https://read.qxmd.com/read/30755318/identification-and-quantification-of-perfluorooctane-sulfonamide-isomers-by-liquid-chromatography-tandem-mass-spectrometry
#16
Guoqiang Shan, Liping Yang, Jinyu Zhao, Ning Liu, Haochen Cui, Wenjue Zhong, Lingyan Zhu
Characterization of the isomers perfluorooctane sulfonamide (PFOSA), a key intermediate of the perfluorooctane sulfonate (PFOS) precursors, is a prerequisite to understand the contribution of precursors to PFOS in the environmental and biological matrices. However, the lack of commercial standards makes quantification of the PFOSA isomers in complex matrices a big challenge. For the first time, a liquid chromatography-tandem mass spectrometry (LC-MS/MS) method was established to identify and quantify PFOSA isomers...
February 5, 2019: Journal of Chromatography. A
https://read.qxmd.com/read/30754639/first-principles-study-of-the-electronic-vibrational-properties-and-anharmonic-effects-of-some-si-based-type-ii-binary-clathrates
#17
Dong Xue, Charley W Myles
Electronic, vibrational, and anharmonic studies on some binary clathrate A x Si136 (A = Na, K, Rb, Cs; 0 < x ≤ 24) are theoretically presented. The Fermi energy lies in the range of 1.1 eV to 1.4 eV for Na x Si136 and increases as stoichiometry ( x ) is tuned from 8 to 12 to 16. The determined isotropic "Mexican-hat" shape of the guest-host potential describing Na motion in the Si28 cage indicates the "off-center" position when the temperature is elevated beyond zero. Accordingly, the calculated Na "off-center" displacements correlate well with the X-Ray Diffraction (XRD) data (0...
February 11, 2019: Materials
https://read.qxmd.com/read/30754020/simultaneous-removal-of-aniline-antimony-and-chromium-by-zvi-coupled-with-h-2-o-2-implication-for-textile-wastewater-treatment
#18
Xue Gang, Qi Wang, Yajie Qian, Pin Gao, Yiming Su, Zhenhong Liu, Hong Chen, Xiang Li, Jiabin Chen
Aniline, antimony (Sb) and chromium (Cr) are typical and regulated co-contaminants in textile wastewater, but their removal was often investigated individually. In this work, simultaneous removal of aniline, Sb and Cr by ZVI coupled with H2 O2 was studied. With the dosage of 0.5 g L-1 ZVI and 2 mM H2 O2 , aniline, Sb and Cr can be removed completely at pH 3. Experiment with iso-propanol as the radical scavenger confirmed that OH derived from Fenton reaction accounts for aniline degradation, but not for Sb and Cr removal...
February 5, 2019: Journal of Hazardous Materials
https://read.qxmd.com/read/30747619/sinomicrobium-soli-sp-nov-isolated-from-arctic-soil
#19
Xiupian Liu, Qiliang Lai, Yaping Du, Xiaorong Zhang, Huanzi Zhong, Zongze Shao
A bacterial strain, designated N-1-3-6T , was isolated from a soil sample collected from the arctic regions. The cells were short rods, Gram-stain-negative, catalase- and oxidase-positive. Growth was observed with 0-12 % (w/v) NaCl, with optimal growth at 0.5-2 %, and at pH 6.0-9.0, with optimum of pH 7.0, and a growth temperature of 10-45 °C, with an optimum of 28-37 °C. Phylogenetic analysis based on the 16S rRNA gene placed N-1-3-6T in the genus Sinomicrobium with the closest relative being Sinomicrobium pectinilyticum 5DNS001T , exhibiting 95...
February 12, 2019: International Journal of Systematic and Evolutionary Microbiology
https://read.qxmd.com/read/30747616/bacillus-acidinfaciens-sp-nov-isolated-from-farmland-soil
#20
Leni Sun, Yan Chen, Wei Tian, Lunguang Yao, Zhaojin Chen, Wenkai Ouyang
A Gram-stain-positive, rod-shaped, motile bacterial strain, designated 3-2-2T , was isolated from field topsoil collected from a western suburb of Nanyang city, Henan province, China. Phylogenetic analysis based on 16S rRNA gene sequences indicated that strain 3-2-2T was a member of the genus Bacillus and most closely related to Bacillus fortis R-6514T (98.9 % similarity), Bacillus terrae RA9T (98.0 %) and Bacillus fordii R-7190T (97.7 %). A draft genome sequence determined for strain 3-2-2T revealed a DNA G+C content of 42...
February 12, 2019: International Journal of Systematic and Evolutionary Microbiology
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