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Effects and safety of natriuretic peptides as treatment of cirrhotic ascites:A systematic review and meta-analysis

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World Journal of Hepatology 2022年第4期14卷 827-845页

作者： rasmus Hvidbjerg Gantzel Mikkel Breinholt kjær Peter Jepsen Niels kristian Aagaard Hugh Watson Lise Lotte Gluud Henning Grønbæk Department of Hepatology and Gastroenterology Aarhus University HospitalAarhus N 8200Denmark Gastroenterology Unit Copenhagen University HospitalHvidovre 2650Denmark Department of Clinical Medicine University of CopenhagenHvidovre 2650Denmark

BACkGrOUND Natriuretic peptides are involved in the cascade of pathophysiological events occurring in liver cirrhosis,counterbalancing vasoconstriction and anti-natriuretic *** effects of natriuretic peptides as treatment of cirrhotic ascites have been investigated only in small studies,and definitive results are *** To examine the effects and safety of natriuretic peptides in cirrhosis patients with *** We searched MEDLINE,Web of Science,Scopus,Cochrane Library and Embase for all available studies applying intravenous administration of any natriuretic peptide to patients suffering from cirrhotic *** was not limited by treatment duration or dose,or by follow-up *** randomised controlled trials and non-randomised studies were eligible for *** primary outcome was change in renal sodium *** outcomes included safety measures and changes in renal water excretion,plasma aldosterone concentration,and plasma renin *** Twenty-two studies were *** natriuretic peptide(ANP)was the only intensively studied *** excretion increased in response to continuous ANP infusion and was more pronounced when infusion rates of>30 ng/kg/min were administered compared with≤30 ng/kg/min(Preover,natriuresis was significantly higher in study subgroups with mild/moderate ascites compared with moderate/severe and refractory ascites(Preased renal water excretion,although without reaching a statistically significant dose-response *** aldosterone concentration and plasma renin activity were significantly lower at baseline in study subgroups achieving a negative sodium balance in response to an ANP administration compared with treatment non-responders(Pressure decreases occurred less frequently when ANP doses≤30 ng/kg/min were *** quality of evidence for a natriuretic response to ANP was low,mainly due to small sample size

关键词： Atrial natriuretic peptide B-type natriuretic peptide Urodilatin Cirrhosis Ascites refractory ascites

Synthesis and characterization of CNT/Ce-TiO_2 nanocomposite for phenol degradation

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Journal of rare Earths 2012年第7期30卷 651-658页

作者： Shaari N Tan S H Mohamed A r School of Chemical Engineering Engineering Campus University Sains Malaysia

An innovative photocatalyst, Carbon nanotube （CNT） supported Ce-TiO2 nanocomposite was successfully synthesized via modi-fied sol gel method and investigated in a batch reactor for abolition of phenol under UV light spectrum. Characterization of catalyst micro-structure and internal properties were done by means of X-ray diffraction （XrD）, Brunauer-Emmett-Teller （BET）, scanning electron micros-copy （SEM）, transmission electron microscopy （TEM） and UV-vis diffuse reflectance spectra （DrS）. Ce doping can inhibit phase transfor-mation from anatase to rutile and eliminate the recombination of electron-hole pairs in the catalyst. The presence of CNT in TiO2 composite can both increase the photoactivity under UV and change surface properties to achieve sensitivity to visible light. The optimum mass ratio of CNT support and cerium （Ce） dopant in TiO2 was the prominent factor to harvest CNT/Ce-TiO2 photocatalyst nanocomposite. The results demonstrated that optimum mass ratio of CNT：TiO2：Ce was 0.02：1.0：0.06, which resulted in the great performance of the photocatalyst to de-grade about 94% of phenol in a 50 mg/L solution in only 3 h. In this paper, dissimilar role of CNT support and Ce dopant in the TiO2 photo-catalysis of phenol was also discussed.

关键词： carbon nanotube (CNT) cerium TiO2 nanocomposite photocatalyst phenol rare earths

response of C_(2)H_(2)F_(4)superheated emulsion to quasi-mono-energetic neutrons at low frequency

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radiation Detection Technology and Methods 2024年第2期8卷 1202-1207页

作者： V.kumar M.Das S.Ali N.Biswas r.Shil k.Banerjee P.Pallav M.Nandy Saha Institute of Nuclear Physics Kolkata700064India Homi Bhabha National Institute Training School ComplexAnushakti NagarMumbai400094India Physics Department Jadavpur UniversityKolkata700032India Physics Department Visva BharatiSantiniketanWB731235India Variable Energy Cyclotron Centre Kolkata700064India Physics Department Victoria College InstitutionKolkata700009India

Background The response of superheated emulsion detector with different halocarbons as active liquid to poly-energetic and mono-energetic neutrons has been carried out by different *** C_(2)H_(2)F_(4)detectors have not been explored *** liquid has shown the potentiality of sensitivity to low-mass dark *** previous calibration of this liquid was carried out with the poly-energetic *** In the present work,to better characterize the detector with neutrons,it is irradiated with quasi-mono-energetic neutrons and the results are compared with neutrons from *** run the detector for the dark matter search,it is required to calibrate it with neutrons,preferably with mono-energetic *** mono-energetic neutron is not available at all establishments;hence,it was calibrated with quasi-mono-energetic *** The response of superheated emulsion consisting of the droplets of C_(2)H_(2)F_(4)has been studied using the quasi-mono-energetic *** superheated droplets have been fabricated in a visco-elastic gel *** shock waves generated by the passage of the energetic particles are detected by the acoustic sensors coupled to the *** measurement has also been carried out for the blank target and beam-off *** and conclusion It is observed that the(Pvar)response of the emulsion in the low-frequency range is sharper for the quasi-mono-energetic neutrons from 7Li(p,n)reaction and wider for the poly-energetic neutrons from *** fundamental frequency associated with bubble nucleation(FF values)is similar for the neutrons from 7Li-target and 241Am-Be *** precise characterization of such detector is required for the application in neutron measurement as well as for the dark matter search experiment apart from the basic understanding of the radiation-induced bubble nucleation.

关键词： Superheated emulsion Bubble nucleation-Low frequency Quasi-mono-energetic Neutrons

Perception and attitude of pastoralists on livestock-wildlife interactions around Awash National Park, Ethiopia: implication for biodiversity conservation

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Ecological Processes 2017年第1期6卷 129-141页

作者： Yihew Biru Zewdu k.Tessema Mengistu Urge Department of Biology School of Natural and Computational SciencesDire Dawa UniversityPO Box 1632Dire DawaEthiopia School of Animal and range Sciences College of Agriculture and Environmental SciencesHaramaya UniversityPO Box 138Dire DawaEthiopia.

Introduction:Pastoral livestock share grazing areas and watering points with wildlife around the protected areas in Eastern *** causes a high degree of livestock-wildlife interactions,leading to conflicts between the local community and park ***,understanding the perception and attitude of local people towards livestockwildlife interaction is very crucial to optimize both livestock production and biodiversity conservation in protected *** paper presents the perception and attitude of local community towards livestock-wildlife interactions around Awash National Park(ANP),***:Interview to 180 randomly selected households,representing Afar,Ittu,and kereyu ethnic groups living around ANP,was conducted from August to December 2015 using a semi-structured *** on community attitude towards wildlife,livestock production systems,and its constraints were collected through focus group-and key informant *** used ordinal logistic regression model to analyze community attitude towards wildlife ***:respondents ranked feed shortage(0.38),lack of water(0.32),and climate change(0.30)as the major constraints of livestock production around ANP.A high degree of conflict(79%;χ^(2)=24.09;df=2;P=0.000)between the local community and park was *** 73%of the households would be ready to live in harmony with the ***,85%of park staff considered the community as a threat,due to high livestock grazing pressure and illegal park resource ***,community attitude towards wildlife significantly varied(χ^(2)=46.28;df=4;P=0.00)particularly due to educational level(χ^(2)=15.96;df=6;P=0.014),income source(χ^(2)=16.77;df=2;P=0.00),and distance of household from ANP(χ^(2)=20.51;df=4;P=0.00).The logistic regression model revealed that ethnic group,education,benefit obtained,and conflict with the park were significantly associated with attitude towards wildlife(χ^(2)15=76.62;df=16;P=0.000).Conclusions:Maj

关键词： Biodiversity conservation Conflict Livestock production Pastoral community Protected areas

Gravastar in the framework of symmetric teleparallel gravity

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Chinese Physics C 2023年第5期47卷 221-231页

作者： Sneha Pradhan Sanjay Mandal P.k.Sahoo Department of Mathematics Birla Institute of Technology and Science-PilaniHyderabad CampusHyderabad 500078India

We present a novel gravastar model based on the Mazur-Mottola(2004)method with an isotropic matter distribution in f(Q)*** gravastar,which is a hypothesized substitute for a black hole,is built using the Mazur-Mottola *** approach allows us to define the gravastar as having three *** first one is an inner region with negative pressure;the next region is a thin shell that is made up of ultrarelativistic stiff fluid,and we studied the proper length,energy,entropy,and surface energy density for this ***,we demonstrated the possible stability of our suggested thin shell gravastar model through the graphical study of the surface *** exterior Schwarzschild geometry describes the outer region of the *** the context of f(Q)gravity,we discovered analytical solutions for the interior of gravastars that are free of any type of singularity and the event horizon.

关键词： gravastar modified gravity non-metricity kuchowicz metric potential

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Si_3N_4/Ni nanocomposite formed by electroplating: Effect of average size of nanoparticulates

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Transactions of Nonferrous Metals Society of China 2010年第6期20卷 1017-1023页

作者： M.A.kHAZrAYIE A.r.S.AGHDAM Department of Materials Engineering Faculty of Engineering Tarbiat Modares University

Properties of Si3N4/Ni electroplated nanocomposite such as corrosion current density after long time immersion,roughness of obtained layer and distribution of nanometric particulates were *** effective factors for fabrication of nanocomposite coatings were fixed for better studying the effect of the average size of *** effects of the different average size of nanometric particulates(ASNP)from submicron scale(less than 1μm)to nanometric scale(less than 10 nm)were *** nanostructures of surfaces were examined by scanning electron microscopy(SEM),transmission electron microscopy(TEM)and atomic force microscopy(AFM).Corrosion rates of the coatings were determined using the Tafel polarization *** is seen that decreasing the ASNP will lead to lower corrosion current densities;however,in some cases,pitting phenomena are *** roughness illustrates a minimum level while the distribution of nanometric particulates is more uniform by decreasing the *** effects of pulsed current on electrodeposition(frequency,duty cycle)and concentration of nanoparticulates in electrodeposition bath on trend of obtained curves have been *** surface methodology was applied for optimizing the effective operating conditions of *** levels studied were frequency range between 1 000 and 9 000 Hz,duty cycle between 10%and 90%and concentration of nanoparticulates of 10-90 g/L.

关键词： corrosion electrodeposition nanocomposite nanostructure nano diamond

Stem cells, growth factors and scaffolds in craniofacial regenerative medicine

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Genes & Diseases 2016年第1期3卷 56-71页

作者： Viktor Tollemar Zach J.Collier Maryam k.Mohammed Michael J.Lee Guillermo A.Ameer russell r.reid The University of Chicago Pritzker School of Medicine ChicagoIL 60637USA Department of Orthopedic Surgery and rehabilitation Medicine The University of Chicago Medical CenterChicagoIL 60637USA Laboratory of Craniofacial Biology and Development Section of Plastic and Reconstructive SurgeryDepartment of SurgeryThe University of Chicago MedicineChicagoIL 60637USA Department of Surgery Feinberg School of MedicineChicagoIL 60611USA Biomedical Engineering Department Northwestern UniversityEvanstonIL 60208USA

Current reconstructive approaches to large craniofacial skeletal defects are often complicated and ***-sized defects are unable to heal via natural regenerative processes and require surgical intervention,traditionally involving autologous bone(mainly in the form of nonvascularized grafts)or *** bone grafts remain the gold standard of care in spite of the associated risk of donor site *** engineering approaches represent a promising alternative that would serve to facilitate bone regeneration even in large craniofacial skeletal *** strategy has been tested in a myriad of iterations by utilizing a variety of osteoconductive scaffold materials,osteoblastic stem cells,as well as osteoinductive growth factors and small *** of the major challenges facing tissue engineers is creating a scaffold fulfilling the properties necessary for controlled bone *** properties include osteoconduction,osteoinduction,biocompatibility,biodegradability,vascularization,and progenitor cell *** review will provide an overview of how optimization of the aforementioned scaffold parameters facilitates bone regenerative capabilities as well as a discussion of common osteoconductive scaffold materials.

关键词： Bone regeneration Craniofacial defects Osteogenesis regenerative medicine Scaffolds Tissue engineering

Computational study of inverse ferrite spinels

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Chinese Physics B 2019年第5期28卷 305-311页

作者： A EL Maazouzi r Masrour A Jabar M Hamedoun Laboratory of Materials Processes Environment and Quality Cadi Ayyad University National School of Applied Sciences Institute of Nanomaterials and Nanotechnologies

The magnetic properties of inverse ferrite Fe_(3+) Fe_(3+)Co_(2+) O^(2-)_4, Fe^(3+) Fe^(3+)Cu^(2+) O^2_(-4), Fe^(3+) Fe^(3+)Fe^(2+) O^2_(-4),and Fe^(3+) Fe^(3+)Ni^(2+) O^(2-)_4spinels have been studied using Monte Carlo simulation. We have also calculated the critical and Curie Weiss temperatures from the thermal magnetizations and inverse of magnetic susceptibilities for each *** hysteresis cycles have been found for the four systems. Finally, we found the critical exponents associated with magnetization, magnetic susceptibility, and external magnetic field. Our results of critical and Curie Weiss temperatures are similar to those obtained by experiment results. The critical exponents are similar to those of known 3 D-Ising model.

关键词： inverse ferrites spinels Monte Carlo simulation critical and Curie Weiss temperatures magnetic hysteresis cycles critical exponents

LOW-rANk MATrIX COMPLETION WITH POISSON OBSErVATIONS VIA NUCLEAr NOrM AND TOTAL VArIATION CONSTrAINTS

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Journal of Computational Mathematics 2024年第6期42卷 1427-1451页

作者： Duo Qiu Michael k.Ng Xiongjun Zhang School of Mathematics and Physics Wuhan Institute of TechnologyWuhan 430205China Department of Mathematics Hong Kong Baptist UniversityKowloon TongHong Kong SARChina School of Mathematics and Statistics and Hubei key Laboratory of Mathematical Sciences Central China Normal UniversityWuhan 430079China

In this paper,we study the low-rank matrix completion problem with Poisson observations,where only partial entries are available and the observations are in the presence of Poisson *** propose a novel model composed of the kullback-Leibler(kL)divergence by using the maximum likelihood estimation of Poisson noise,and total variation(TV)and nuclear norm *** the nuclear norm and TV constraints are utilized to explore the approximate low-rankness and piecewise smoothness of the underlying matrix,*** advantage of these two constraints in the proposed model is that the low-rankness and piecewise smoothness of the underlying matrix can be exploited simultaneously,and they can be regularized for many real-world image *** upper error bound of the estimator of the proposed model is established with high probability,which is not larger than that of only TV or nuclear norm *** the best of our knowledge,this is the first work to utilize both low-rank and TV constraints with theoretical error bounds for matrix completion under Poisson *** numerical examples on both synthetic data and real-world images are reported to corroborate the superiority of the proposed approach.

关键词： Low-rank matrix completion Nuclear norm Total variation Poisson observations