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granular activated carbons from palm nut shells for gold di-cyanide adsorption

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International Journal of Minerals,Metallurgy and Materials 2013年第2期20卷 172-179页

作者： william K.Buah Paul T.williams Energy Research Institute The University of LeedsLeeds LS2 9JTUnited Kingdom

granular activated carbons were produced from palm nut shells by physical activation with steam. The proximate analysis of palm nut shells was investigated by thermogravimetric analysis, and the adsorption capacity of the activated carbons, produced as a result of shell pyrolysis at 600℃ followed by steam activation at 900℃ in varying activation times, was evaluated using nitrogen adsorption at 77 K. Applicability of the activated carbons for gold dicyanide adsorption was also investigated. Increasing the activation hold time with the attendant increase in the degree of carbon burn-off results in a progressive increase in the surface area of the activated carbons, reaching a value of 903.1 m2/g after activation for 6 h. The volumes of total pores, mieropores, and mesopores in the activated carbons also increase progressively with the increasing degree of carbon burn-off, resulting from increasing the activation hold time. The gold di-cyanide adsorption of the activated carbons increases with the rise of pore volume of the activated carbons. The gold di-cyanide adsorption of palm nut shell activated carbon obtained after 6-h activation at 900℃ is superior to that of a commercial activated carbon used for gold di-cyanide adsorption.

关键词： activated carbon adsorption gold cyanides processing pyrolysis

Light-absorbing Particles in Snow and Ice: Measurement and Modeling of Climatic and Hydrological impact

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Advances in Atmospheric Sciences 2015年第1期32卷 64-91页

作者： Yun QIAN Teppei J.YASUNARI Sarah J.DOHERTY Mark g.FLANNER william K.M.LAU MINg Jing Hailong WANg Mo WANg Stephen g.WARREN Rudong ZHANg Atmospheric Sciences and global Change Division Pacific Northwest National Laboratory goddard Earth Sciences Technology and Research Universities Space Research Association NASA goddard Space Flight Center Department of Atmospheric Sciences University of Washington Department of Atmospheric Sciences University of Michigan Earth System Science Interdisciplinary Center University of Maryland College Park 20740MD USA Earth Science Division NASA Goddard Space Flight Center National Climate Center China Meteorological Administration Key Laboratory of Tibetan Environment Changes and Land Surface Processes Institute of Tibetan Plateau ResearchChinese Academy of Sciences College of Atmospheric Sciences Lanzhou University

Light absorbing particles（LAP, e.g., black carbon, brown carbon, and dust） influence water and energy budgets of the atmosphere and snowpack in multiple ways. In addition to their effects associated with atmospheric heating by absorption of solar radiation and interactions with clouds, LAP in snow on land and ice can reduce the surface reflectance（a.k.a., surface darkening）, which is likely to accelerate the snow aging process and further reduces snow albedo and increases the speed of snowpack melt. LAP in snow and ice（LAPSI） has been identified as one of major forcings affecting climate change, *** the fourth and fifth assessment reports of IPCC. However, the uncertainty level in quantifying this effect remains very high. In this review paper, we document various technical methods of measuring LAPSI and review the progress made in measuring the LAPSI in Arctic, Tibetan Plateau and other mid-latitude regions. We also report the progress in modeling the mass concentrations, albedo reduction, radiative forcing, and climatic and hydrological impact of LAPSI at global and regional scales. Finally we identify some research needs for reducing the uncertainties in the impact of LAPSI on global and regional climate and the hydrological cycle.

关键词： light-absorbing aerosol snow ice albedo measurement climate modeling hydrological cycle

Use of the Endocuff during routine colonoscopy examination improves adenoma detection: A meta-analysis

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World Journal of gastroenterology 2016年第43期22卷 9642-9649页

作者： Matthew Chin william Karnes M Mazen Jamal John g Lee Robert Lee Jason Samarasena Matthew L Bechtold Douglas L Nguyen Division of gastroenterology and Hepatology University of California Irvine Division of gastroenterology Long Beach Veterans Affairs Health System Division of gastroenterology University of Missouri Health

AIM To perform meta-analysis of the use of Endocuff during average risk screening *** Scopus, Cochrane databases, MEDLINE/Pub Med, and CINAHL were searched in April 2016. Abstracts from Digestive Disease Week, United European gastroenterology, and the American College of gastroenterology meeting were also searched from 2004-2015. Studies comparing EC-assisted colonoscopy(EAC) to standard colonoscopy, for any indication, were included in the analysis. The analysis was conducted by using the Mantel-Haenszel or DerS imonian and Laird models with the odds ratio(OR) to assess adenoma detection, cecal intubation rate, and complications performed. RESULTS Nine studies(n = 5624 patients) were included in the analysis. Compared to standard colonoscopy, procedures performed with EC had higher frequencies for adenoma(OR = 1.49, 95%CI: 1.23-1.80; P = 0.03), and sessile serrated adenomas detection(OR = 2.34 95%CI: 1.63-3.36; P gnificant difference in cecal intubation rates between the EACgroup and standard colonoscopy(OR = 1.26, 95%CI: 0.70-2.27, I2 = 0%; P = 0.44). EAC was associated with a higher risk of complications, most commonly being superficial mucosal injury without higher frequency for *** The use of an EC on colonoscopy appears to improve pre-cancerous polyp detection without any difference in cecal intubation rates compared to standard colonoscopy.

关键词： Colonoscopy Endocuff Adenoma detection

gastrointestinal and liver disease in patients with schizophrenia:A narrative review

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World Journal of gastroenterology 2022年第38期28卷 5515-5529页

作者： Rebecca K grant william M Brindle Mhairi C Donnelly Pauline M McConville Thomas g Stroud Lorenzo Bandieri John N Plevris The Centre for Liver and Digestive Disorders Royal Infirmary of EdinburghEdinburghEH164SAUnited Kingdom general Adult Psychiatry Royal Edinburgh HospitalEdinburghEH105HFUnited Kingdom

Schizophrenia is a severe mental illness which can have a devastating impact onan individual’s quality of life. Comorbidities are high amongst patients and lifeexpectancy is approximately 15 years less than the general population. Despite thewell-known increased mortality, little is known about the impact of gastrointestinaland liver disease on patients with schizophrenia. We aimed to reviewthe literature and to make recommendations regarding future care. Literaturesearches were performed on PubMed to identify studies related to gastrointestinaland liver disease in patients with schizophrenia. High rates of chronic liverdisease were reported, with Non-Alcoholic Fatty Liver Disease being of particularconcern;antipsychotics and metabolic syndrome were contributing factors. Ratesof acute liver failure were low but have been associated with antipsychotic useand paracetamol overdose. Coeliac disease has historically been linked to schizophrenia;however, recent research suggests that a causal link is yet to be *** is emerging regarding the relationships between schizophrenia andpeptic ulcer disease, inflammatory bowel disease and irritable bowel syndrome;clinical vigilance regarding these conditions should be high. Patients with schizophreniapoorly engage with bowel cancer screening programmes, leading to latediagnosis and increased mortality. Clozapine induced constipation is a significantissue for many patients and requires close monitoring. There is a significantburden of gastrointestinal and liver disease amongst patients with *** levels of support from all members of the medical team are essential toensure that appropriate, timely care is provided.

关键词： Schizophrenia gastrointestinal disease Liver disease Mental health

Ovarian autoimmune disease： clinical concepts and anima models

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Cellular & Molecular Immunology 2014年第6期11卷 510-521页

作者： Bryce D Warren william K Kinsey Lynda K Mcginnis Lane K Christenson Susmita Jasti Anne M Stevens Brian K Petroff Margaret g Petroff Department of Anatomy and Cell Biology University of Kansas Medical Center Kansas City KS USA Department of Molecular and Integrative Physiology University of Kansas Medical Center Kansas City KS USA Research Center for Immunity and I mmunotherapies Children's Hospital and Regional Medical Center and Division of Rheumatology Department of Pediatrics University of Washington Seattle WA USA Department of Internal Medicine University of Kansas Medical Center Kansas City KS USA Present address: Department of Pathobiology and Diagnostic Investigation Michigan State University College of Veterinary Medicine East Lansing MI USA

The ovary is not an immunologically privileged organ, but a breakdown in tolerogenic mechanisms for ovary-specific antigens has disastrous consequences on fertility in women, and this is replicated in murine models of autoimmune disease. Isolated ovarian autoimmune disease is rare in women, likely due to the severity of the disease and the inability to transmit genetic information conferring the ovarian disease across generations. Nonetheless, autoimmune oophoritis is often observed in association with other autoimmune diseases, particularly autoimmune adrenal disease, and takes a toll on both society and individual health. Studies in mice have revealed at least two mechanisms that protect the ovary from autoimmune attack. These mechanisms include control of autoreactive T cells by thymus-derived regulatory T cells, as well as a role for the autoimmune regulator （AIRE）, a transcriptional regulator that induces expression of tissue-restricted antigens in medullary thymic epithelial cells during development of T cells. Although the latter mechanism is incompletely defined, it is well established that failure of either results in autoimmune-mediated targeting and depletion of ovarian follicles. In this review, we will address the clinical features and consequences of autoimmune-mediated ovarian infertility in women, as well as the possible mechanisms of disease as revealed by animal models.

关键词： Ovarian autoimmune clinical concepts animal models

Tracking invasion and invasiveness in Queensland fruit flies： From classical genetics to ＇omics＇

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Current Zoology 2015年第3期61卷 477-487页

作者： william B. SHERWIN Marianne FROMMER John A. SVED Kathryn A. RAPHAEL John g. OAKESHOTT Deborah C.A. SHEARMAN A. Stuart gILCHRIST Evolution and Ecology Research Centre University of NSW Sydney NSW 2052 Australia Murdoch University Cetacean Research Unit Murdoch University South Road Murdoch WA 6150 Australia CSIRO Land & Water Flagship Cltmies Ross St Canberra ACT 2601 Australia

Three Australian tephritid fruit flies （Bactrocera tryoni - Q-fly, Bactrocera neohumeralis - NEO, and Bactrocera jarvisi - JAR） are promising models for genetic studies of pest status and invasiveness. The long history of ecological and physi- ological studies of the three species has been augmented by the development of a range of genetic and genomic tools, including the capacity for forced multigeneration crosses between the three species followed by selection experiments, a draft genome for Q-fly, and tissue- and stage-specific transcriptomes. The Q-fly and NEO species pair is of particular interest. The distribution of NEO is contained entirely within the wider distribution of Q-fly and the two species are ecologically extremely similar, with no known differences in pheromones, temperature tolerance, or host-fruit utilisation. However there are three clear differences be- tween them： humeral callus colour, complete pre-mating isolation based on mating time-of-day, and invasiveness. NEO is much less invasive, whereas in historical times Q-fly has invaded southeastern Australia and areas of Western Australia and the North- em Territory. In southeastern fruit-growing regions, microsatellites suggest that some of these outbreaks might derive from ge- netically differentiated populations overwintering in or near the invaded area. Q-fly and NEO show very limited genome diffe- rentiation, so comparative genomic analyses and QTL mapping should be able to identify the regions of the genome controlling mating time and invasiveness, to assess the genetic bases for the invasive strains of Q-fly, and to facilitate a variety of improve- ments to current sterile insect control strategies for that species

关键词： Bactrocera genomics STERILE-insect-technique Interspecific-hybridisation

Striatal oxidative damages and neuroinflammation correlate with progression and survival of Lewy body and Alzheimer diseases

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Neural Regeneration Research 2022年第4期17卷 867-874页

作者： Huifangjie Li william C.Knight Jinbin Xu Department of Radiology Washington University School of MedicineSt.LouisMOUSA

Neurodegenerative diseases are a class of chronic and complex disorders featuring progressive loss of neurons in distinct brain *** mechanisms responsible for the disease progression in neurodegeneration are not fully *** this observational study,we have examined diverse biochemical parameters in the caudate and putamen of patients with Lewy body diseases(LBDs)and Alzheimer disease(AD),shedding some light on the involvement of oxidative damage and neuroinflammation in advanced *** performed Spearman and Mantel-Cox analyses to investigate how oxidative stress and neuroinflammation exert comprehensive effects on disease progression and *** progression in LBDs correlated positively with poly(ADP-Ribose)and triggering receptors expressed on myeloid cell 2 levels in the striatum of LBD cohorts,indicating that potential parthanatos was a dominant feature of worsening disease progression and might contribute to switching microglial inflammatory *** progression in AD corresponds negatively with 8-oxo-7,8-dihydro-2′-deoxyguanosine(8-oxo-d g)and myeloperoxidase concentrations in the striatum,suggesting that possible mitochondria dysfunction may be involved in the progression of AD via a mechanism ofβ-amyloid entering the mitochondria and subsequent free radicals *** with lower striatal 8-oxo-d g and myeloperoxidase levels had a survival advantage in *** age of onset also affected disease *** requests for the postmortem biochemistry,genetics,and autoradiography studies were approved by the Washington University Alzheimer's Disease Research Center(ADRC)Biospecimens Committee(ethics approval reference number:T1705,approval date:August 6,2019).Recombinant DNA and Hazardous Research Materials were approved by the Washington University Environmental Health&Safety Biological Safety Committee(approval code:3739,approval date:February 25,2020).Radioactive Material Authorization was approved

关键词： Alzheimer disease disease progression Lewy body diseases microglia neurodegeneration oxidative damage striatum survival

History and Progress of the North American Soil geochemical Landscapes Project,2001-2010

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地学前缘 2012年第3期19卷 19-32页

作者： David B.Smith william F.Cannon Laurel g.Woodruff Francisco Moreira Rivera Andrew N.Rencz Robert g.garrett US geological Survey MS 973 Denver CO 80225 USA US geological Survey MS 9541 Reston VA 20192 USA US geological Survey 2280 Woodale Drive St. Paul MN 55112 USA Servicio geologico Mexicano 78280 San Luis Potosl S. L. P. Mexrico geological Survey of Canada Natural Resources Canada 601 Booth St. Ottawa ON Canada K IA OE8

In 2007,the *** Survey,the geological Survey of Canada,and the Mexican geological Survey initiated a low-density(1 site per 1600 km2,13323 sites) geochemical and mineralogical survey of North American soils(North American Soil geochemical Landscapes Project).Sampling and analytical protocols were developed at a series of workshops in 2003-2004 and pilot studies were conducted from *** ideal sampling protocol at each site includes a sample from 0-5 cm depth,a composite of the soil A horizon,and a sample from the soil C *** g,Na,S,Ti,Ag,Ba,Be,Bi,Cd,Ce,Co,Cr,Cs,Cu,ga,In,La,Li,Mn,Mo,Nb,Ni,P,Pb,Rb,Sb,Sc,Sn,Sr,Te,Th,Tl,U,V,W,Y,and Zn by inductively coupled plasma-mass spectrometry and inductively coupled plasma-atomic emission spectrometry following a near-total digestion in a mixture of HCl,HNO3,HClO4,and *** methods are used for As,Hg,Se,and total C on this same size *** major mineralogical components are determined by a quantitative X-ray diffraction *** in the conterminous *** completed in 2010(c.4800 sites) with chemical and mineralogical analysis currently *** Mexico,approximately 66% of the sampling(871 sites) had been done by the end of 2010 with completion expected in *** completing sampling in the Maritime provinces and portions of other provinces(472 sites,7.6% of the total),Canada withdrew from the project in *** results for a swath from the central *** Florida clearly show the effects of soil parent material and climate on the chemical and mineralogical composition of soils.A sample archive will be established and made available for future investigations.

关键词：墨西哥地质学电感耦合等离子体

Bisphenol A exposure alters release of immune and developmental modulators and expression of estrogen receptors in human fetal lung fibroblasts

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Journal of Environmental Sciences 2016年第10期28卷 11-23页

作者： Laziyan Mahemuti Qixuan Chen Melanie C. Coughlan Min Zhang Maria Florian Ryan J Mailloux Xu-Liang Cao Kylie A. Scoggan william g. Willmore Xiaolei Jin Regulatory Toxicology Research Division Bureau of Chemical Safety Food Directorate HPFB Health Canada Ottawa Ontario Canada Food Research Division Bureau of Chemical Safety Food Directorate HPFB Health Canada Ontario Canada Nutrition Research Division Bureau of Nutritional Sciences Food Directorate HPFB Heakh Canada Ottawa Ontario Canada Sector Strategies Division Risk Management Bureau Safe Environments Directorate HECSB Health Canada Ottawa Ontario Canada Institute of Biochemistry Departments of Biology and Chemistry Carleton University Ottawa Ontario Canada

Bisphenol A （BPA） has been shown to exert biological effects through estrogen receptor （ER）-dependent and ER-independent mechanisms. Recent studies suggest that prenatal exposure to BPA may increase the risk of childhood asthma. To investigate the underlying mechanisms in the actions of BPA, human fetal lung fibroblasts {hFLFs） were exposed to varying doses of BPA in culture for 24 hr. Effects of BPA on localization and uptake of BPA, cell viability, release of immune and developmental modulators, cellular localization and expression of ERa, ERβ and g-protein coupled estrogen receptor 30 （gPR30）, and effects of ERs antagonists on BPA-induced changes in endothelin-1 （ET-1） release were examined. BPA at 0.01-100 μmol/L caused no changes in cell viability after 24 hr of exposure, hFLFs expresses all three ERs. BPA had no effects on either cellular distribution or protein expression of ERa, however, at 100 μmol/L （or 23 μmol/L intracellular BPA） increased ERβ protein levels in the cytoplasmic fractions and gPR30 protein levels in the nuclear fractions. These paralleled with increased release of growth differentiation factor-15, decreased phosphorylation of nuclear factor kappa B p65 at serine 536, and decreased release of ET-1, interleukin-6, and interferon gamma-induced protein 10. ERs antagonists had no effects on BPA-induced decrease in ET-1 release. These data suggest that BPA at 100 μmol/L altered the release of immune and developmental modulators in hFLFs, which may negatively influence fetal lung development, maturation, and susceptibility to environmental stressors, although the role of BPA in childhood asthma remains to be confirmed in in viuo studies.

关键词： Bisphenol AHuman fetal lung fibroblastsEstrogen receptorsAntagonistsCytokinesChemokinesImmune and developmentalmodulators