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How well does XAd resin extraction recover halogenated disinfection byproducts for comprehensive identification and toxicity testing?

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Journal of Environmental Sciences 2022年第7期34卷 264-275页

作者： Xiaobin Liao Joshua M.Allen caroline O.Granger Susan d.Richardson department of Chemistry and Biochemistry University of South CarolinaColumbiaSouth Carolina 29208USA Institute of Municipal and Environmental Engineering College of Civil EngineeringHuaqiao UniversityFujian 361021China Currently at LanzaTech 535 Commerce DriveSopertonGeorgia 30457USA

Halogenated disinfection byproducts(dBPs) are an unintended consequence of drinking water disinfection, and can have significant toxicity. XAd resins are commonly used to extract and enrich trace levels of dBPs for comprehensive, nontarget identification of dBPs and also for in vitro toxicity studies. However, XAd resin recoveries for complete classes of halogenated dBPs have not been evaluated, particularly for low, environmentally relevant levels(ng/L to low μg/L). Thus, it is not known whether levels of dBPs or the toxicity of drinking water might be underestimated. In this study, dAX-8/XAd-2 layered resins were evaluated, considering both adsorption and elution from the resins, for extracting 66 dBPs from water. Results demonstrate that among the 7 classes of dBPs investigated, trihalomethanes(THMs), including iodo-THMs, were the most efficiently adsorbed, with recovery of most THMs ranging from 50%-96%, followed by halonitromethanes(40%-90%). The adsorption ability of XAd resins for haloacetonitriles, haloacetamides, and haloacetaldehydes was highly dependent on the individual species. The adsorption capacity of XAd resins for haloacetic acids was lower(5%-48%), even after adjusting to p H 1 before extraction. Recovery efficiency for most dBPs was comparable with their adsorption, as most were eluted effectively from XAd resins by ethyl acetate. dBP polarity and molecular weight were the two most important factors that determine their recovery. Recovery of trichloromethane, iodoacetic acid, chloro-and iodo-acetonitrile, and chloroacetamide were among the lowest, which could lead to underestimation of toxicity, particularly for iodoacetic acid and iodo-acetonitrile, which are highly toxic.

关键词： XAd resins disinfection byproducts dBPs Recovery Toxicity

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High temperature X-ray diffraction study of the formation of Na_(2)Ti_(3)O_(7) from a mixture of sodium carbonate and titanium oxide

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Journal of Energy Chemistry 2022年第2期31卷 210-218页

作者： caroline Piffet Bénédicte Vertruyen Frédéric Hatert Rudi Cloots Frédéric Boschini Abdelfattah Mahmoud GREENMAT CESAM Research UnitChemistry DepartmentUniversity of Liège4000 LiègeBelgium Laboratory of Mineralogy Geology Research UnitUniversity of Liège4000 LiègeBelgium

Na2Ti3O7 has attracted much attention in the field of anode materials for Na-ion batteries thanks to its non-toxicity and very low working potential of 0.3 V vs Na0/Na+.Building a clearer picture of its formation from cheap Na_(2)CO_(3) and TiO_(2) starting materials is therefore of obvious ***,we report new insights from an in-situ high temperature X-ray diffraction study conducted from room temperature to 800°C,complemented by ex-situ *** were thereby able to position the previously reported Na_(4)Ti_(5)O_(12) and Na_(2)Ti_(6)O_(13) intermediate phases in a reaction scheme involving three successive steps and temperature *** and/or broadening of a subset of the Na_(2)Ti_(6)O_(13) reflections suggested a combination of intra-layer disorder with the well-established ordering of successive *** in-situ study was carried out on reproducible mixtures of Na_(2)CO_(3) and TiO_(2) in 1:3 molar ratio prepared by spraydrying of mixed aqueous ***-phase Na_(2)Ti_(3)O_(7) was obtained after only 8 h at 800°C in air,instead of a minimum of 20 h for a conventional solid-state route using the same *** analysis revealed~15 mm diameter granules made up from rectangular rods of a fewmm length presenting electrochemical properties in line with *** the absence of grinding or formation of intimate composites with conductive carbon,the specific capacity of 137 m Ah/g at C/5 decreased at higher rates.

关键词： Formation mechanism High temperature XRd Na_(2)Ti_(3)O_(7) Spray-drying synthesis Na-ion batteries

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Severe asthma exacerbation:Changes in patient characteristics,management,and outcomes from 1997 to 2016 in 40 ICUs in the greater Paris area

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Journal of Intensive Medicine 2024年第2期4卷 209-215页

作者： Romy Younan Jean Loup Augy Bertrand Hermann Bertrand Guidet Philippe Aegerter Emmanuel Guerot Ana Novara caroline Hauw-Berlemont Amer Hamdan Clotilde Bailleul Francesca Santi Jean-Luc diehl Nicolas Peron Nadia Aissaoui Intensive Care Unit AP-HPGeorges Pompidou European HospitalUniversitéde ParisParisFrance Intensive Care Unit AP-HPSaint Antoine HospitalUniversités de SorbonneUniversitéPierre et Marie CurieParisFrance INSERM U1136 ParisFrance Versailles Saint-Quentin-en-Yvelines University INSERM U1018Groupe Interrégional de Recherche Clinique et d'InnovationÎle-de-FranceFrance Respiratory Medicine department AP-HPGeorges Pompidou European HospitalUniversitéde ParisParisFrance Innovative Therapies in Hemostasis INSERM UMR-S1140Universitéde ParisParisFrance Intensive Care Unit and Biosurgical Research Lab(Carpentier Foundation) AP-HPGeorges Pompidou European HospitalParisFrance Paris-Cardiovascular-Research-Center INSERM U970ParisFrance

Background despite advances in asthma treatments,severe asthma exacerbation(SAE)remains a life-threatening condition in adults,and there is a lack of data derived from adult patients admitted to intensive care units(ICUs)for *** current study investigated changes in adult patient characteristics,management,and outcomes of SAE over a 20-year period in 40 ICUs in the greater Paris *** In this retrospective observational study,admissions to 40 ICUs in the greater Paris area for SAE from January 1,1997,to december 31,2016 were *** primary outcome was the proportion of ICU admissions for SAE during 5-year *** outcomes were ICU and hospital mortality,and the use of mechanical ventilation and *** analysis was performed to assess factors associated with ICU *** A total of 7049 admissions for SAE were *** each 5-year period,the proportion decreased over time,with SAE accounting for 2.84%of total ICU admissions(n=2841)between 1997 and 2001,1.76%(n=1717)between 2002 and 2006,1.05%(n=965)between 2007 and 2011,and 1.05%(n=1526)between 2012 and *** median age was 46 years(interquartile range[IQR]:32–59 years),55.41%were female,the median Simplified Acute Physiology Score II was 20(IQR:13–28),and 19.76%had mechanical *** use of mechanical ventilation remained infrequent throughout the 20-year period,whereas the use of catecholamine *** and hospital mortality rates *** associated with ICU mortality were renal replacement therapy,catecholamine,cardiac arrest,pneumothorax,acute respiratory distress syndrome,sepsis,and invasive mechanical ventilation(IMV).Non-survivors were older,had more severe symptoms,and were more likely to have received *** ICU admission for SAE remains uncommon,and the proportion of cases decreased over *** a slight increase in symptom severity during a 20-year period,ICU and hospital mortality *** requirin

关键词： Epidemiology Intensive care unit Mechanical ventilation Severe asthma exacerbation

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On the Stability of Racing Sailing Boats with Foils

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Chinese Annals of Mathematics,Series B 2018年第3期39卷 427-450页

作者： Philippe dESTUYNdER caroline FABRE département d'ingénierie Mathématique Laboratoire M2N Conservatoire National des Arts et Métiers 292rue saint Martin75003 ParisFrance Laboratoire de Mathématiques d'Orsay Univ.Paris-SudCNRSUniversitéParis-Saclay 91405 OrsayFrance

The development of foils for racing boats has changed the strategy of sailing. Recently, the America＇s cup held in San Francisco, has been the theatre of a tragicomic history due to the foils. during the last round, the New-Zealand boat was winning by 8 to 1 against the defender USA. The winner is the first with 9 victories. USA team understood suddenly （may be） how to use the control of the pitching of the inain foils by adjusting the rake in order to stabilize the ship. And USA won by 9 victories against 8 to the challenger NZ. The goal in this paper is to point out few aspects which could be taken into account in order to improve this mysterious control law which is known as the key of the victory of the USA team. There are certainly many reasons and in particular the cleverness of the sailors and of all the engineering team behind this project. But it appears interesting to have a mathematical discussion, even if it is a partial one, on the mechanical behaviour of these extraordinary sailing boats. The nunlerical exanlples given here are not the true ones. They have just been invented in order to explain the theoretical developments concerning three points： The possibility of tacking on the foils for sailing upwind, the nature of foiling instabilities, if there are, when the boat is flying and the control laws.

关键词： Hydrodynamics of foils Mathematical analysis Stability

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Pediatric upper extremity firearm injuries:an analysis of demographic factors and recurring mechanisms of injury

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World Journal of Pediatrics 2021年第5期17卷 527-535页

作者： d.Spencer Nichols Mitsy Audate caroline King david Kerekes Harvey Chim Ellen Satteson University of Florida College of Medicine.Gainesville FL.USA department of Surgery Division of Plastic and Reconstructive Surgery.University of Florida College of Medicine100138GainesvilleFL 32610USA

Background Little is known regarding risk factors specific to pedialric upper extremity firearm *** purpose of this study is to evaluate pediatric patients treated for these injuries to identify at-risk populations and recurring mechanisms of *** A 20-year retrospective review was *** 17 years of age and younger,with upper extremity injuries related to a firearm,were *** involved Fisher's exact and Chi-square *** One hundred and eighty patients were *** mean age was 12.04±4.3 *** included patients were male(85%).Interestingly,females were more frequently victims of assault(P=0.03),and males were more frequently injured due to accidental discharge(Pd race/ethnicity was White-not Hispanic or Latino(48%).The hand was the most frequent location injured(31%)and was more likely to be accidental than proximal injuries(P=0.003).Air rifes were the most common firearm type used(56%).Pistols were implicated in 47(26%)cases,rifles in 17(9%),*** in 10(6%).Ninety-nine(55%)patients had procedures in the operating *** most frequent procedure was foreign body removal(55%).Conclusions Risk factors such as male sex,W hite-not Hispanic or Latino race/ethnicity,and adolescent age were attributed to increased risk for *** sex was associated with increased risk of injury by accidental discharge and female sex with intentional *** rifles were the most common firearm type overall,although female sex was associated with increased risk for injury by powder weapon.

关键词： Firearm Injury Pediatric Trauma Upper extremity

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Old dog,new trick:The PHR-SPX system regulates arbuscular mycorrhizal symbiosis

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Molecular Plant 2022年第2期15卷 225-227页

作者： debatosh das caroline Gutjahr CUHK Shenzhen Research Institute No.10 Yuexing 2nd RoadNanshanShenzhenChina Plant Genetics TUM School of Life SciencesTechnical University of Munich(TUM)Emil Ramann Strasse 485354 FreisingGermany

Plant growth depends on the continuous availability of the macro-nutrient phosphate(Pi).However,in most soils,Pi is only poorly accessible to plants,resulting in Pi deficiency and triggering a number of Pi starvation *** strategy of plants to over-come Pi limitation is to form a symbiosis with arbuscular mycor-rhizal(AM)fungi(Smith et al.,2011),which occurs with approximately 80%of land *** fungi improve the uptake of Pi and other mineral nutrients and thereby increase plant performance and stress *** collect these minerals with an extraradical hyphal network from the soil and release them from highly branched structures,called arbuscules,into root cortex ***,Pi sufficiency causes inhibition of internal root colonization(Balzergue et al.,2011;Breuillin et al.,2010).The mechanistic basis for this has long remained *** studies have now solved this long-standing mystery and demonstrated that a canonical Pi-response regulatory module regulates AM symbiosis in accordance with the plant Pi status(Shi et al.,2021;das et al.,2022).

关键词： thereby symbiosis release

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Isolation and Characterization of SARS-CoV-2 in Kenya

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American Journal of Molecular Biology 2024年第2期14卷 66-83页

作者： Albina Makio Robinson Mugasiali Irekwa Matthew Mutinda Munyao caroline Wangui Njoroge Peter Kipkemboi Rotich Tonny Teya Nyandwaro Joanne Jepkemei Yego Anne Wanjiru Mwangi James Hungo Kimotho Ronald Tanui Vincent Rutto Samson Muuo Nzou Center for Traditional Medicine and drug Research Kenya Medical Research Institute Nairobi Kenya Center for Microbiology Research Kenya Medical Research Institute Nairobi Kenya Production department Kenya Medical Research Institute Nairobi Kenya department of Biochemistry and Microbiology Rhodes University Grahamstown South Africa Center for Virus Research Kenya Medical Research Institute Nairobi Kenya

The discovery of Severe Acute Respiratory Syndrome-Coronavirus-2 (SARS-CoV-2) in Wuhan, Hubei province, China, in december 2019 raised global health warnings. Quickly, in 2020, the virus crossed borders and infected individuals across the world, evolving into the COVId-19 pandemic. Notably, early signs of the virus’s existence were observed in various countries before the initial outbreak in Wuhan. As of 12th of April, the respiratory disease had infected over 762 million people worldwide, with over 6.8 million deaths recorded. This has led scientists to focus their efforts on understanding the virus to develop effective means to diagnose, treat, prevent, and control this pandemic. One of the areas of focus is the isolation of this virus, which plays a crucial role in understanding the viral dynamics in the laboratory. In this study, we report the isolation and detection of locally circulating SARS-CoV-2 in Kenya. The isolates were cultured on Vero Cercopithecus cell line (CCL-81) cells, RNA extraction was conducted from the supernatants, and reverse transcriptase-polymerase chain reaction (RT-PCR). Genome sequencing was done to profile the strains phylogenetically and identify novel and previously reported mutations. Vero CCL-81 cells were able to support the growth of SARS-CoV-2 in vitro, and mutations were detected from the two isolates sequenced (001 and 002). Genome sequencing revealed the circulation of two isolates that share a close relationship with the Benin isolate with the d614G common mutation identified along the S protein. These virus isolates will be expanded and made available to the Kenya Ministry of Health and other research institutions to advance SARS-CoV-2 research in Kenya and the region.

关键词： SARS-CoV-2 COVId-19 Whole Genome Sequencing Phylogenetic Analysis Nucleotide Substitutions Amino Acid Changes

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New Opportunities for Lanthanide Luminescence

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Journal of Rare Earths 2007年第3期25卷 257-274页

作者： Jean-Claude G. Bünzli Steve Comby Anne-Sophie Chauvin caroline d. B. Vandevyver Laboratory of Lanthanide Supramolecular Chemistry Ecole Polytechnique Fédérale de Lausanne BCH 1402 CH-1015 Lausanne Switzerland

Trivalent lanthanide ions display fascinating optical properties. The discovery of the corresponding elements and their first industrial uses were intimately linked to their optical properties. This relationship has been kept alive until today when many high-technology applications of lanthanide-containing materials such as energy-saving lighting devices, displays, optical fibers and amplifiers, lasers, responsive luminescent stains for biomedical analyses and in cellulo sensing and imaging, heavily rely on the brilliant and pure-color emission of lanthanide ions. In this review we first outlined the basics of lanthanide luminescence with emphasis on f-f transitions, the sensitization mechanisms, and the assessment of the luminescence efficiency of lanthanide-containing emissive molecular edifices. Emphasis was then put on two fast developing aspects of lanthanide luminescence： materials for telecommunications and light emitting diodes, and biomedical imaging and sensing. Recent advances in NIR-emitting materials for plastic amplifiers and waveguides were described, together with the main solutions brought by researchers to minimize non-radiative deactivation of excited states. The demonstration in 1999 that erbium tris（8-hydroxyquinolinate） displayed a bright green emission suitable for organic light emitting diodes （OLEds） was followed by realizing that in OLEds, 25% of the excitation energy leads to singlet states and 75% to triplet states. Since lanthanide ions are good triplet quenchers, they now also play a key role in the development of these lighting devices. Luminescence analyses of biological molecules are among the most sensitive analytical techniques known. The long lifetime of the lanthanide excited states allows time-resolved spectroscopy to be used, suppressing the sample autofluorescence and reaching very low detection limits. Not only visible lanthanide sensors are now ubiquitously provided in medical diagnosis and in cell imaging, but the feasibili

关键词： lanthanide luminescence sensitization near infrared telecommunications organic light emitting diode (OLEd) time-resolved luminescence in cellulo sensing cell imaging rare earths

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Spawning ascent durations of pelagic spawning reef fishes

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Current Zoology 2012年第1期58卷 95-102页

作者： Habrun, caroline A. Sancho, Gorka College of Charleston Department of Biology Grice Marine Laboratory 205 Fort Johnson Road Charleston SC 29412 USA

Predation risks have been hypothesized to influence spawning behaviors of coral reef fishes that broadcast gametes pelagically. The duration of spawning ascents of 13 species were measured from video footage at a single spawning site for mul- tiple coral reef fishes to investigate ff this behavior was influenced by varying risks of predation. Fishes that spawned in pairs had as- cents of longer duration than group-spawning species. duration of spawning ascents did not vary between fishes spawning at daytime and dusk, nor between group-spawning species with specific anti-predatory morphological adaptations. These results indicate that risk of predation may not significantly influence the duration of spawning ascents of pair spawning reef fishes at our study site, while group-spawning behaviors are influenced by predation. Avoidance of egg predation by benthic organisms and female mate choice are more likely to influence the pelagic spawning behaviors of all fishes observed [Current Zoology 58 （1）： 95-102, 2012].

关键词： Reef fishes Behavior Spawning Predation Mate selection

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Efficacy and tolerability of chitin-glucan combined with simethicone(GASTRAP^(■)dIRECT)in irritable bowel syndrome:A prospective,open-label,multicenter study

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World Journal of Gastrointestinal Pharmacology and Therapeutics 2024年第3期15卷 10-22页

作者： Nathalie Talbodec Pauline Le Roy Peggy Fournier Benoit Lesage Elodie Lepoutre François Castex Jean Michel Godchaux Lionel Vandeville Benjamin Bismuth Xavier Lesage Pauline Bayart Michael Genin Christel Rousseaux Veronique Maquet Salvatore Modica Pierre desreumaux caroline Valibouze department of Gastroenterology Hôpital privéLe BoisLille 59000France department of Gastroenterology Hôpital privéde Villeneuve d’AscqVilleneuve d’Ascq 59650France Univ.Lille CHU LilleULR 2694–METRICSÉvaluation des Technologies de Santéet des Pratiques MédicalesLille 59000France development of Intestinal Biotech 1 Avenue Oscar LambretLille 59045France KitoZyme SA Parc Industriel des hauts Sarts Zone 2Rue de MilmortHerstal 4040Belgium BiOkuris A Parc Industriel des hauts Sarts Zone 2Rue de MilmortHerstal 4040Belgium department of Hepato-Gastroenterology Lille University HospitalLille 59000France U1286-INFINITE Institute for Translational Research in InflammationUniv.LilleInsermCHU LilleLille 59000France department of digestive Surgery and Transplantation Lille University HospitalLille 59037France

BACKGROUNd Irritable bowel syndrome(IBS),defined according to the Rome IV diagnostic criteria,is a chronic functional gastrointestinal disorder characterized by recurrent abdominal pain related to altered bowel ***-line recommended treatments are limited to combining drugs targeting predominant symptoms,particularly pain(antispasmodics),constipation(laxatives),and diarrhea(loperamide),yielding only a limited therapeutic ***^(■)dIRECT is a class IIa medical formulation composed of a combination of chitin-glucan and simethicone indicated for the symptomatic treatment of gas-related gastrointestinal disorders by combining different mechanisms of *** To evaluate the efficacy,tolerability,and safety of 4-week GASTRAP^(■)dIRECT treatment in patients with *** In this prospective,multicenter,open-label trial,120 patients with IBS received three sticks of GASTRAP^(■)dIRECT(1.5 g/d of chitin-glucan and 0.75 mg/d of simethicone)per day for 4 *** primary endpoint was the responder rate,defined as the number of patients whose abdominal pain score decreased by≥30%from baseline to week(W)*** analysis was performed using the per-protocol *** symptoms,impact of global symptoms on daily life,change in stool consistency,and improvement in defecatory disorders were *** Overall,100 patients were *** W4,67%(95%CI:57-75)showed improvement in abdominal pain(score:5.8±2.4 vs 2.9±2.0,Pd for bloating[8.0±1.7 vs 4.7±2.9,Pders],abdominal distension[7.2±2.1 vs 4.4±3.1,Pders],and impact of global symptoms on daily life[7.1±2.0 vs 4.6±2.9,Pders].Stool consistency improved in most patients(90%and 57%for patients with liquid and hard stools,respectively).Overall,42%of patients with defecatory disorders reported very much/considerable improvements by *** severe adverse event occurred,and tolerabil

关键词： Chitin-glucan Irritable bowel syndrome Abdominal pain Flatulence defecatory disorders Stool consistency Natural non-pharmacological treatment

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