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Branching Ratios from H→γγ and H→Zγ with a 125 GeV Higgs Boson

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Journal of Modern Physics 2012年第12期3卷 1835-1839页

作者： Alejandro Gutiérrez-Rodríguez María de los Angeles Hernández-Ruíz Polet Castaneda-Almanza Alejandro González-Sánchez facultad de física Universidad Autonoma de ZacatecasZacatecasMexico Unidad Académica de ciencias Químicas Universidad Autonoma de ZacatecasZacatecasMexico

Motivated by the recent result reported from LHC on the di-photon search from the Standard Model (SM) Higgs boson, we obtain limits on the anomalous couplings Hγγ and HZγ. We also perform a calculation at tree level of the decay widths as well as of the branching ratios for the reactions H → γγ and H → Zγ in the context of effective lagrangian for Higgs boson masses 115 ≤MH ≤ 130 GeV. We find that the decay widths and branching ratios from these reactions enhanced significantly due to the anomalous Hγγ and HZγ vertex, which would lead to measurable effects in Higgs signals at the LHC. Moreover, our results complement other studies on the channels H → γγ and H → Zγ.

关键词： Standard Model Higgs Boson Models beyond the Standard Model

Isotopic Variations of Oxygen (δ^(18)O) in Benthic foraminifera under Antiestuarine Conditions in the Colorado River delta

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Open Journal of Geology 2018年第2期8卷 104-123页

作者： Miguel A.Santa Rosa-del Río Ismael Yarbuh Rigoberto Guardado-france Ronald M.Spelz Raúl Herrera-Gutiérrez Karla Mejia-Pina Miguel Agustín Tellez-Duarte Luis Antonio Cupul-Magana Universidad Autónoma de Baja California Facultad de Ciencias MarinasArea de GeologíaEnsenadaMéxico

Benthic foraminifera are excellent environmental indicators;CaCO3 test records the isotopic concentration of their surroundings and can be used to analyze environmental changes that occur during a certain time period. Stable isotopes, particularly those of oxygen (δ18O), are useful for interpreting ancient environments, given that they are used as “proxy” environmental variables (temperature and salinity). In this study, we provide ranges of isotopic variation in benthic foraminifera communities from the Colorado River delta. four sampling campaigns were conducted in one year (2009-2010) in the adjacent subtidal zone of Baja California. four transects with a total of sixteen sample station were drawn perpendicular to the coastline. Here, we recorded the following in situ: sand-type, salinity, and temperature. In the laboratory, 300 individuals per sample were separated, and sub-samples were taken for isotopic analysis. Data was processed using the software’s R 2.12.2, PAST 1.81 and Arc Map 9.3. forty species were identified in the dead assemblages (Thanatocoenosis), whereas thirteen species were found in the living assemblages (Biocoenosis). The most abundant species in both communities belong to the genera Ammonia and Cribroelphidium. In the living assemblages, isotopic variation −2.15% to 5.94% within a temperature interval of 11°C, indicated antiestuarine conditions. In the dead assemblages, isotopic composition −3.04 to −0.74 served as a sign of estuarine conditions prior to damming.

关键词： Stable Isotopes Living Assemblages dead Assemblages Upper Gulf of California

Information-Based Numerical Distances between Equilibrium and Non-Equilibrium States

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Journal of Modern Physics 2020年第7期11卷 1031-1043页

作者： Angel Ricardo Plastino Gustvo Luis ferri Mario Carlos Rocca Angelo Plastino CeBio y departamento de ciencias Básicas Universidad Nacional del Noroeste de la Prov. de Buenos Aires Junin Argentina Argentina’s National Research Council (CONICET) La Plata Argentina departamento de física Facultad de Ciencias Exactas y Naturales Universidad Nacional de La Pampa Junin Argentina departamento de física Universidad Nacional de La Plata La Plata Argentina departamento de matemática Universidad Nacional de La Plata La Plata Argentina SThAR - EPfL Lausanne Switzerland

We consider a typical master equation describing thermal time-evolution. In parallel, we also consider a quasi static canonical description of the same problem. We are able to devise a way of numerically comparing these two treatments and concoct a distance-measure between them. In this way, one is in a position to know how far or close equilibrium and off-equilibrium can get. The first, rather surprising observation, is that our systems lose structural details as N grows. Also, the time-evolution of the distance between the two pertinent probability distributions is quite sensitive to the heating-cooling process.

关键词： Information Theory Master Equation Thermal Time-Evolution Equilibrium-Off Equilibrium Distances

Serum Adiponectin levels in Different Phenotypes of Polycystic Ovary Syndrome

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Open Journal of Endocrine and Metabolic Diseases 2012年第4期2卷 125-131页

作者： Carolina fux Otta Paula Szafryk de Mereshian Raquel Kaplan Gabriel Santino Iraci Silvia Ojeda José Ochoa Andrés Albrecht Natalia filipone Marta fiol de Cuneo Cátedra de farmacología Aplicada Facultad de Ciencias Médicas Universidad Nacional de Córdoba (UNC) Córdoba Argentina Cátedra de fisiología Humana Facultad de Ciencias Médicas Universidad Nacional de Córdoba (UNC) Córdoba Argentina departamento de Endocrinología y Diabetes Hospital Universitario de Maternidad y Neonatología (HUM y N) Córdoba Argentina Diangus Diagnóstico por imágenes docencia e investigación Córdoba Argentina Grupo de Probabilidad y Estadística Facultad de Matemática Astronomía y Física (UNC) Córdoba Argentina Laboratorio MEGA Rafaela Santa Fe

Objectives: to evaluate and compare serum adiponectin levels in different phenotypes of polycystic ovary syndrome (PCOS) and to investigate their correlation with endocrine and metabolic parameters. Material and methods: we studied 5 groups of patients: A (n = 20): H (hyperandrogenism) + O (oligoanovulation) + P (polycystic ovary) [classic phenotype];B (n = 17): H + O [classic phenotype but normal ovaries];C (n = 15): H + P [Ovulatory phenotype];D (n = 17): O + P [Normoandrogenic phenotype];and E (n = 16) control group. Body mass index, waist circumference, waist/hip ratio, blood pressure and hirsutism were evaluated. Serum concentrations of adiponectin, insulin, Creactive protein, SHBG, androgens and lipids were measured. Oral glucose tolerance test was performed. Results: there were no differences between the groups in terms of age and BMI. Total cholesterol, LDL-C and triglyceride levels were higher in phenotype A than in C (P P = 0.03). HOMA-IR, insulin and glucose/insulin ratio were significantly higher in phenotypes A and D vs C and E (P P P f PCOS. Our results suggest that adiponectin could be used as a biochemical marker to identify phenotypes at increased metabolic risk.

关键词： Polycystic Ovary Syndrome Phenotypes Adiponectin

A DYNAMICS APPROACH TO THE COMPUTATION Of EIGENVECTORS Of MATRICES

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Journal of Computational Mathematics 2005年第6期23卷 657-672页

作者： S. Jiménez L. Vézquez Colaborador honorifico Dept. Matemátiea AplicadaUniversidad Complutense de Madrid 28040 Madrid Spain dept. matemdtica Aplicada Facultad de Informática Universidad Complutense de Madrid 28040 Madrid Spain Centro de Astrobiologla CSIC/INTA 28850 Torrejón de Ardoz Madrid Spain

We construct a family of dynamical systems whose evolution converges to the eigenvectors of a general square matrix, not necessarily symmetric. We analyze the convergence of those systems and perform numerical tests. ... 详细信息

关键词： Smallest real eigenvalue Iterative method

Tecia solanivora infestation increases tuber starch accumulation in Pastusa Suprema potatoes

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Journal of Integrative Plant Biology 2018年第11期60卷 1083-1096页

作者： Pavan Kumar Etzel Garrido Kun Zhao Yi Zheng Saleh Alseekh Erandi Vargas-Ortiz Alisdair R.fernie Zhangjun fei Katja Poveda Georg Jander Boyce Thompson Institute for Plant Research 533 Tower RoadIthacaNY 14853USA department of Entomology Cornell UniversityIthacaNY 14853USA Max Planck Institute of Molecular Plant Physiology Wissenschaftspark GolmAm Muhlenberg 114476 PotsdamGermany department of entomology and nematology university of floridaGainesvilleFL 32611USA unidad de microbiologia basica y aplicada facultad de ciencias naturalesuniversidad autonoma de queretaroAv.de las Ciencias SINJuriquillaquerdtaroMdxico department of molecular biology institute for scientific and technological research of san luis potosiMexico

In response to infestation with larvae of the Guatemalan tuber moth （Tecia solanivora）, some Solanum tuberosum （potato） varieties exhibit an overcompensa- tion response, whereby the total dry mass of uninfested tubers is increased. Here, we describe early responses, within the first few days, of T. solanivora feeding, in the Colombian potato variety Pastusa Suprema. Non- targeted metabolite profiling showed significant second- ary metabolism changes in T. solanivora-infested tubers, but not in uninfested systemic tubers. In contrast, changes in primary metabolism were greater in unin- fested systemic tubers than in the infested tubers, with a notable 80% decline in systemic tuber sucrose levels within 1 d of T. solanivora infestation. This suggested either decreased sucrose transport from the leaves or increased sink strength, i.e., more rapid sucrose to starch conversion in the tubers. Increased sucrose synthesis was indicated by higher rubisco activase and lower starch synthase gene expression in the leaves of infested plants. Elevated sink strength was demonstrated by 45% more total starch deposition in systemic tubers of T. solanivord- infested plants compared to uninfested control plants. Thus, rather than investing in increased defense of uninfested tubers, Pastusa Suprema promotes deposition of photoassimilates in the form of starch as a response to T. solanivora infestation.

关键词： Tecia solanivora infestation increases tuber starch accumulation in Pastusa Suprema potatoes figure

Pretreatment inflammatory indices predict Bevacizumab response in recurrent Glioma

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Cancer Drug Resistance 2020年第3期3卷 623-635页

作者： Alicia Martínez-González Raquel Cabrera Marta Lloret Pedro C.Lara department de matemáticas Universidad de Castilla-La ManchaETSI IndustrialesAvdaCiudad Real 13071Spain. Oncología Radioterápica Hospital Universitario de Gran Canaria Dr Negrin Barranco de la Ballena s/nLas Palmas de Gran CanariaLas Palmas 35010Spain. facultad de ciencias de la Salud Universidad de Las Palmas de Gran CanariaPaseo de Blas Cabrera Felipes/nLas Palmas de Gran CanariaLas Palmas 35016Spain. fundación Canaria del Instituto Canario de Investigación del Cáncer Avda de la Trinidad 61 Torre Agustín Arevalo 7 planta La LagunaSanta Cruz de Tenerife 38204Spain. San Roque University Hospitals Dolores de la Rocha5Las Palmas de Gran CanariaLas Palmas 35001Spain. fernando Pessoa Canarias University Dolores dela Rocha 14Las Palmas de Gran CanariaLas Palmas 35016Spain.

Aim:It remains unclear what the best therapeutic option for recurrent glioma patients after Stupp treatment ***(BVZ)is commonly administered in progression,but it appears that only some patients *** would be useful to find biomarkers that determine beforehand who these patients ***:The protocol included 31 high-risk progressing glioma patients after Stupp treatment who received BVZ 5-10 mg/kg every 14 days and temozolomide(3-19 cycles,150-200 mg five days each 28-day cycle)during a mean of eight cycles of BVZ or until tumor progression or unacceptable *** analyzed the clinical outcome values of inflammatory indices measured before BVZ ***:Lymphocyte level before BVZ administration was the best independent predictor of overall survival(HR=0.34;95%CI:0.145-0.81;P=0.015).The area under the receiver operating characteristic(ROC)curve was 0.823,with 1.645 being the optimal cut-off value,and 0.80 and 0.85 the sensitivity and specificity values,*** and non-responder survival curves were also significantly different,considering the first and second tertiles as cut-off *** number of BVZ cycles was not related to *** neutrophil platelet levels,platelet-to-lymphocyte ratio(PLR),and neutrophil-to-lymphocyte ratio(NLR)did not have independent predictive *** variables were not correlated with each ***,patients with high NLR and PLR simultaneously(double positive PLR-NLR)showed a worse clinical outcome than the rest(P=0.043).Conclusion:Pretreatment lymphocyte levels and double positive PLR-NLR could be used as non-invasive hematological prognostic markers for recurrent gliomas treated with bevacizumab.A close relationship emerged between inflammation and angiogenesis.

关键词： Recurrent glioma bevacizumab predictive biomarker inflammatory indices lymphocytes

Water Quality Assessment of a Tropical Mexican Lake Using Multivariate Statistical Techniques

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Journal of Environmental Protection 2015年第3期6卷 215-224页

作者： Jessica Badillo-Camacho Eire Reynaga-delgado Isela Barcelo-Quintal Pedro f.Zarate del Valle Ulrico J.Lopez-Chuken Eulogio Orozco-Guareno Jorge Israel AlvarezBobadilla Sergio Gomez-Salazar departamento de Quimica Universidad de Guadalajara-Centro Universitario de Ciencias Exactas e IngenieriasGuadalajaraMexico departamento de farmacobiologia Universidad de Guadalajara-Centro Universitario de Ciencias Exactas e IngenieriasGuadalajaraMexico departamento de ciencias Basicas Universidad Autonoma MetropolitanaUnidad AzcapotzalcoMexico D.F.Mexico facultad de ciencias Quimicas Universidad Autonoma de Nuevo LeonSan Nicolas de los GarzaMexico departamento de Ingenieria Quimica Universidad de Guadalajara-Centro Universitario de Ciencias Exactas e IngenieriasGuadalajaraMexico

Water quality of Mexican tropical lake Chapala was assessed through multivariate statistical techniques, cluster analysis (CA) and principal component analysis (PCA) at ten different monitoring sites for ten physicochemical variables and six metals. This study evaluated and interpreted complex water quality data sets and apportioned of pollution sources to get better information about water quality. from descriptive statistics results, the highest concentrations of metals occurred during the dry season, and this trend was explained by the fact that an unusual rainy event occurred during the month of february 2009 and brought metals into the lake by runoffs from nearby mountains. According to international criteria for water consumption by aquatic organisms [USEPA], only Zn concentration values were below these criteria whereas the values of Ni, Pb, Cd and fe were above the corresponding values set in these criteria (Ni: 52 μg·L-1, Pb: 2.5 μg·L-1, Cd: 0.25 μg·L-1, and fe: 1000 μg·L-1). The correlations were observed by PCA, which were used to classify the samples by CA, based on the PCA scores. Seven significant cluster groups of sampling locations—(sites 4 and 5), (sites 3 and 9), (site 7), (site 10), (sites 2 and 6), (site 8) and (site 1)— were detected on the basis of similarity of their water quality. The results revealed that the stress exerted on the lake caused by waste sources follows the order: domestic > agricultural > industrial.

关键词： Multivariate Statistical Analysis toxic Metals Water Quality Lake Pollution

Multi-temporal NDVI analysis using UAV images of tree crowns in a northern Mexican pine-oak forest

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林业研究:英文版 2023年第6期34卷 1855-1867页

作者： JoséLuis Gallardo-Salazar Marcela Rosas-Chavoya Marín Pompa-García Pablito Marcelo López-Serrano Emily García-Montiel Arnulfo Meléndez-Soto Sergio Iván Jiménez-Jiménez Instituto de Investigaciones Agropecuarias y forestales Universidad Michoacana de San Nicolás de Hidalgo(UMSNH)58330 MoreliaMichoacánMexico Programa Institucional de Doctorado en ciencias Agropecuarias y forestales Universidad Juárez del Estado de DurangoRío Papaloapan y Blvd.DurangoValle del Sur s/n34120 DurangoDurangoMéxico facultad de ciencias forestales Universidad Juárez del Estado de DurangoRío Papaloapan y Blvd.DurangoValle del Sur s/n34120 DurangoDurangoMéxico Instituto de Silvicultura e Industria de la Madera Universidad Juárez del Estado de DurangoBoulevard del Guadiana 501Ciudad UniversitariaTorre de Investigación34120 DurangoMéxico INIfAP-CENID RASPA Centro Nacional de Investigación Disciplinaria en Relación Agua-Suelo-Planta-Atmósfera Margen derecha canal Sacramento km 6.5Zona industrial35140 Gómez PalacioDurangoMexico

The use of unmanned aerial vehicles(UAV)for forest monitoring has grown significantly in recent years,providing information with high spatial resolution and temporal *** with multispectral sensors allow the use of indexes such as the normalized difference vegetation index(NDVI),which determines the vigor,physiological stress and photo synthetic activity of *** study aimed to analyze the spectral responses and variations of NDVI in tree crowns,as well as their correlation with climatic factors over the course of one *** study area encompassed a 1.6-ha site in Durango,Mexico,where Pinus cembroides,Pinus engelmannii,and Quercus grisea *** images were acquired with UAV and information on meteorological variables was obtained from NASA/POWER *** ANOVA explored possible differences in NDVI among the three *** correlation was performed to identify the linear relationship between NDVI and meteorological *** differences in NDVI values were found at the genus level(Pinus and Quercus),possibly related to the physiological features of the species and their *** grisea had the lowest NDVI values throughout the year which may be attributed to its sensitivity to relative humidity and *** the use of UAV with a multispectral sensor for NDVI monitoring allowed genera differentiation,in more complex forest analyses hyperspectral and LiDAR sensors should be integrated,as well other vegetation indexes be considered.

关键词： Multispectral images Normalized diff erence Vegetation index Phenology Unmanned aerial vehicles Multitemporal analysis