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Photonic dark matter portal and quantum physics

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Chinese Physics C 2016年第2期40卷 40-46页

作者： s.A.A1avi f.s.Kazemian Department of Physics Hakim Sabzevari University P. O. Box 397 Sabzevar Iran

We study a model of dark matter in which the hidden sector interacts with standard model particles via a hidden photonic *** investigate the effects of this new interaction on the hydrogen atom,including the stark,Zeeman and hyperfine *** the accuracy of the measurement of energy,we obtain an upper bound for the coupling constant of the model as f≤10^-*** also calculate the contribution from the hidden photonic portal to the anomalous magnetic moment of the muon as αμ≤ 2.2 × 10^-23（for the dark particle mass scale 100MeV）,which provides an important probe of physics beyond the standard model.

关键词： dark matter quantum physics hidden sector photonic portal

Metasomatic stages and scapolitization Effects on Chemical Composition of Pasveh Pluton,NW Iran

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Journal of Earth science 2011年第5期22卷 619-631页

作者： s A Mazhari s Amini J Ghalamghash f Bea Department of Geology Payame Noor University Department of Geology Tarbiat Moallem University Geological survey of Iran Department of Mineralogy and Petrology Fuentenueva CampusUniversity of Granada

Pasveh gabbros are mafic component of a plutonic complex in the northwest sanandaj- sirjan Zone. These cumulative rocks are composed of plagioclase and calcic clinopyroxene （Cpx）, which yield unusually high CaO （〉19 wt.%） in whole-rock chemistry. Petrographical and geochemical data suggest that Pasveh gabbros can be divided into two groups： free scapolite and scapolite-bearing gabbros. The second group has higher Na20, K20, and P205 relative to free scapolite ones and is enriched in LIL （large ion lithophile） and Hfs （high field strength） elements. Two stages of metasomatism affected the primary composition of mafic rocks. firstly, high temperature reaction caused to invert primary high Ti clinopyroxene to low Ti cUnopyroxene＋high Ti amphibole. This reaction was extensive and included all gabbroic samples. Hydrothermal fluids involved in this process can be derived from dehydration reactions of country rocks or from other magmas incorporated in the formation of Pasveh complex pluton. The second metasomatic stage relates to scapolitization of limited parts of gabbroic rocks. An external saline fluid, which is composed of major NaCI and minor KCI and P205 components, impacted locally on Pasveh gabbros and formed the second metasomatic stage. Possible sources of Na and Cl are primary evaporites or brines, which were present in the host sediments of the gabbros. The carbonate-free nature of these hydrothermal fluids suggests that hydrothermal fluids responsible for the formation of scapolite in Pasveh gabbros are derived from marine evaporitic parentage.

关键词： Iran sanandaj-sirjan Zone Pasveh pluton gabbro metasomatism high Ti Cpx low Ti Cpx amphibole scapolite.

The theoretical study of the efficiency of diffusion deposition of nanoaerosols in the extended range of the Peclet numbers

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Particuology 2023年第6期77卷 47-55页

作者： R.f.Mardanov s.K.Zaripov V.f.sharafutdinov N.I.Lobachevskii Institute of Mathematics and Mechanics Kazan(Volga Region)Federal UniversityKremlevskaya ul.18KazanTatarstan420008Russia

The efficiencies of the diffusion deposition of nanoaerosols for a single fiber for the models of aerosol filter and wire mesh screen are studied numerically in the extended range of the Peclet number *** rectangular periodic cell model for fluid flow and convective-diffusive transport of small aerosol particles is *** of the previous theoretical and experimental studies of single fiber diffusion deposition efficiency were for the case of Pe>*** array with uniform square or chess grid of fibers and of a row of circular cylindrical fibers are considered as the filter and wire mesh screen *** flow and particles transport equations are solved numerically using the Boundary Element *** obtained numerical data are used to derive the approximate formulas for the deposition efficiency in the entire range of the Peclet number for the various porosities of the filter medium or distances between fibers in a wire mesh *** derived dependencies take into account nonlinearity of the deposition efficiency at the low Peclet *** obtained analytical dependencies compare well with the numerical and experimental data.

关键词： Arrayof fibers Row of fibers Periodic cell model Convection-diffusion equation single fiber efficiency

Data-driven drug repositioning using olfactory omics profiles:challenges and perspectives in neurodegeneration

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Neural Regeneration Research 2025年第7期20卷 1997-1998页

作者： Paz Cartas-Cejudo Adriana Cortés Mercedes Lachén-Montes Elena Anaya-Cubero Joaquín fernández-Irigoyen Enrique santamaría Clinical Neuroproteomics Unit Proteomics PlatformNavarrabiomedHospitalario Universitario de Navarra(HUN)Universidad Pública de Navarra(UPNA)IdiSNANavarra Institute for Health ResearchPamplonaSpain

Data-driven drug repositioning using olfactory omics profiles-challenges and perspectives in neurodegeneration:Neurodegenerative diseases are characterized by progressive degeneration and loss of neuronal function in the central nervous *** diseases are often characterized as proteinopathies,which are disorders primarily driven by the aggregation or misfolding of specific amyloid proteins within cells,leading to their dysfunction and eventual *** the gain-of-function hypothesis related to the aggregation of these proteins,recently,an alternative hypothesis regarding the loss-of-function of the soluble monomeric proteins during the process of aggregation into amyloids is gaining *** last event is called proteinopenia and refers to conditions characterized by a deficiency or decrease in the levels of specific soluble proteins in the body(Ezzat et al.,2023).It has been demonstrated that levels of soluble proteins involved in neurodegenerative diseases are decreased.

关键词： diseases drug amyloid

Large deflection response-based geometrical nonlinearity of nanocomposite structures reinforced with carbon nanotubes

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Applied Mathematics and Mechanics(English Edition) 2020年第8期41卷 1227-1250页

作者： s.ZGHAL A.fRIKHA f.DAMMAK Laboratory of Electromechanical systems National Engineering School of SfaxUniversity of SfaxB.P W3038SfaxTunisia

This paper deals with the nonlinear large deflection analysis of functionally graded carbon nanotube-reinforced composite(fG-CNTRC)plates and panels using a finite element *** on the first-order shear deformation theory(fsDT),the proposed model takes into account the transverse shear deformations and incorporates the geometrical nonlinearity type.A C^0 isoparametric finite shell element is developed for the present nonlinear model with the description of large displacements and finite *** adopting the extended rule of mixture,the effective material properties of fG-CNTRCs are approximated with the introduction of some efficiency *** carbon nanotube(CNT)distributions,labeled uniformly distributed(UD)-CNT,fG-VCNT,fG-O-CNT,and fG-X-CNT,are *** solution procedure is carried out via the Newton-Raphson incremental *** numerical applications in both isotropic and CNTRC composite cases are performed to trace the potential of the present *** effects of the CNT distributions,their volume fractions,and the geometrical characteristics on the nonlinear deflection responses of fG-CNTRC structures are highlighted via a detailed parametric study.

关键词： carbon nanotube(CNT) functionally graded material(fGM) geometrical nonlinearity large deflection

Natural orifice translumenal endoscopic surgery: Progress in humans since white paper

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World Journal of Gastroenterology 2011年第13期17卷 1655-1665页

作者： Byron f santos Eric s Hungness Department of surgery Feinberg School of Medicine Northwestern University Chicago IL 60611 United States

since the first description of the concept of natural orifice translumenal endoscopic surgery (NOTEs), a substantial number of clinical NOTEs reports have appeared in the literature. This editorial reviews the available human data addressing research questions originally proposed by the white paper, including determining the optimal method of access for NOTEs, developing safe methods of lumenal closure, suturing and anastomotic devices, advanced multitasking platforms, addressing the risk of infection, managing complications, addressing challenges with visualization, and training for NOTEs procedures. An analysis of the literature reveals that so far transvaginal access and closure appear to be the most feasible techniques for NOTEs, with a limited, but growing transgastric, transrectal, and transesophageal NOTEs experience in humans. The theoretically increased risk of infection as a result of NOTEs procedures has not been substantiated in transvaginal and transgastric procedures so far. Development of suturing and anastomotic devices and advanced platforms for NOTEs has progressed slowly, with limited clinical data on their use so far. Data onthe optimal management and incidence of intraoperative complications remain sparse, although possible factors contributing to complications are discussed. finally, this editorial discusses the likely direction of future NOTEs development and its possible role in clinical practice.

关键词： Natural orifice translumenal endoscopic surgery Outcomes Complications Endoscopic surgery

soil Properties in Coniferous forest stands Along a fly Ash Deposition Gradient in Eastern Germany

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Pedosphere 2005年第6期15卷 681-694页

作者： s. KLOsE f. MAKEsCHIN Institute of soil science Faculty of Forest Geo and Hydro Sciences Dresden University of Technology P.O. 1117 D-01735 Tharandt (Germany)

Physical, chemical, and microbial properties of forest soils subjected to long-term fly ash depositions were analyzed in spruce (Picea abies (L.) Karst.) stands of eastern Germany on three forest sites along an emission gradient of 3 (high input), 6, and 15 km (low input) downwind of a coal-fired power plant. Past emissions resulted in an atypical high mass of mineral fly ash constituents in the organic horizons at the high input site of 128 t ha-1 compared to 58 t ha-1 at the low input site. Magnetic susceptibility measurements proved that the high mineral content of the forest floor was a result of fly ash accumulation in these forest stands. fly ash deposition in the organic horizons at site I versus III significantly increased the pH values, effective cation exchange capacity, base saturation and, with exception of the L horizon, concentrations of mobile heavy metals Cd, Cr, and Ni, while stocks of organic C generally decreased. A principal component analysis showed that organic C content and base status mainly controlled soil microbial biomass and microbial respiration rates at these sites, while pH and mobile fractions of Cd, Cr, and Ni governed enzyme activities. Additionally, it was hypothesized that long-term fly ash emissions would eventually destabilize forest ecosystems. Therefore, the results of this study could become a useful tool for risk assessment in forest ecosystems that were subjected to past emissions from coal-fired power plants.

关键词： coniferous forests fly ash deposition magnetic susceptibility microbial biomass mobile heavy metal fraction

Risk factors for neoplastic progression in Barrett's esophagus

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World Journal of Gastroenterology 2011年第32期17卷 3672-3683页

作者： Elizabeth f Wiseman Yeng s Ang Department of Gastroenterology Royal Albert Edward Infirmary Wigan Lane Wigan Greater Manchester WN1 2NN United Kingdom faculty of Medical and Human sciences School of Translational Medicine The University of Manchester Oxford Road Manchester M13 9PL United Kingdom

Barrett's esophagus (BE) confers a significant increased risk for development of esophageal adenocarcinoma (EAC), with the pathogenesis appearing to progress through a "metaplasia-dysplasia-carcinoma" (MDC) sequence. Many of the genetic insults driving this MDC sequence have recently been characterized, providing targets for candidate biomarkers with potential clinical utility to stratify risk in individual patients. Many clinical risk factors have been investigated, and associations with a variety of genetic, specific gastrointestinal and other modifiable factors have been proposed in the literature. This review summarizes the current understanding of the mechanisms involved in neoplastic progression of BE to EAC and critically appraises the relative roles and contributions of these putative risk factors from the published evidence currently available.

关键词： Barrett’s esophagus Esophageal adeno-carcinoma Metaplasia-dysplasia-carcinoma Neoplastic progression Risk factors

Outcome of patients with acute, necrotizing pancreatitis requiring drainage-does drainage size matter?

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World Journal of Gastroenterology 2008年第5期14卷 725-730页

作者： T Bruennler J Langgartner s Lang CE Wrede f Klebl s Zierhut s siebig f Mandraka f Rockmann B salzberger s feuerbach J schoelmerich OW Hamer Department of Internal Medicine I University of Regensburg Regensburg 93042 Germany Department of Radiology University of Regensburg Regensburg 93042 Germany

AIM:To assess the outcome of patients with acute necrotizing pancreatitis treated by percutaneous drainage with special focus on the influence of drainage size and number. METHODs:We performed a retrospective analysis of 80 patients with acute pancreatitis requiring percutaneous drainage therapy for infected necroses. Endpoints were mortality and length of hospital stay. The influence of drainage characteristics such as the median drainage size, the largest drainage size per patient and the total drainage plane per patient on patient outcome was evaluated. REsULTs:Total hospital survival was 66%. Thirty-four patients out of all 80 patients (43%) survived acute necrotizing pancreatitis with percutaneous drainage therapy only. Eighteen patients out of all 80 patients needed additional percutaneous necrosectomy (23%). Ten out of these patients required surgical necrosectomy in addition, 6 patients received open necrosectomy without prior percutaneous necrosectomy. Elective surgery was performed in 3 patients receiving cholecystectomy and one patient receiving resection of the parathyroid gland. The number of drainages ranged from one to fourteen per patient. The drainage diameter ranged from 8 french catheters to 24 french catheters. The median drainage size as well as the largest drainage size used per patient and the total drainage area used per patient did not show statistically significant influence on mortality. CONCLUsION:Percutaneous drainage therapy is an effective tool for treatment of necrotizing *** bore drainages did not prove to be more effective in controlling the septic focus.

关键词： Acute necrotizing pancreatitis Percutaneous drainage Drainage size Interventional radiology Percutaneous necrosectomy