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Deciphering the fiber quality of Gossypium barbadense *** in La Convención,Cusco,Perú

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Journal of Cotton Research 2024年第3期7卷 231-242页

作者： MORALES-ARANIBAR Luis SAENZ Manuel Canto MORALES-ARANIBAR carlos Genaro rivera Marite Yulisa Nieves AGUILERA Jorge González STEINER Fábio BARDIVIESSO Diógenes Martins ZUFFO Alan Mario National Intercultural University of Quillabamba Cusco 08741Peru Universidad Nacional Agraria La Molina(UNALM) Lima 012Peru Graduate School Jorge Basadre Grohmann National UniversityTacna 583000Peru National Institute of Agrarian Innovation(INIA) Lima 15024Peru Department of Agronomy State University of Mato Grosso do Sul(UEMS)Cassilândia 79540‑000MSBrazil Department of Agronomy State University of Maranhão(UEMA)Balsas 65800‑000MABrazil

Background The quality of cotton fiber determines its value in the textile market,influencing agricultural profitability and the efficiency of textile *** selection of genotypes with superior fibers is a key factor for genetic improvement programs seeking adaptability and sustainability in the face of climate *** demonstrates the strategic importance of this plant for sustainable agriculture and the global textile *** objective of this research was to decipher the fiber quality of Gossypium barbadense *** in the native Amazonian communities of La Convención,Cusco-Perú,and to evaluate other critical aspects of native cotton that have not yet been *** methodology included non-probability sampling for accessibility,qualitative and quantitative analyses,and multivariate *** fiber length(mm),micronaire index(maturity/fineness),fiber strength(gf/tex),length uniformity index(%),fiber elongation(%),maturation index(%),and short fiber index(%)were the fiber characteristics evaluated using the HVI method in cotton *** Cotton accessions collected from Koribeni(Gossypium spp.)and Shivankoreni(Gossypium barbadense ***)stood out for their fiber quality properties,especially length,strength,and uniformity,which highlights their relevance for advanced textile applications and potential for use in plant genetic improvement *** These findings reinforce the need to conserve and study these native cotton accessions from the Peruvian Amazon region,which can offer promising perspectives for the textile industry and agricultural biodiversity.

关键词： Cotton Sustainability Amazonian communities Cotton fiber quality

Austrian syndrome:Resurgence of an old and deadly triad

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Journal of Intensive Medicine 2024年第2期4卷 261-264页

作者： Kristian rivera Dolors Viles Marta Zielonka carlos Izurieta Tania Ramírez Martínez Diego Menéndez Department of Cardiology University Hospital Arnau de VilanovaInstitut de Recerca Biomèdica de Lleida(IRBLleida)LleidaSpain

Introduction The Gram-positive bacterium,Streptococcus pneumoniae(***),often colonizes the nasopharynx;however,it is one of the major microorganisms that cause pneumonia and meningitis.[[1],[2],[3]]It presents several virulence factors,such as surface proteins and enzymes,pneumolysin toxin,and a polysaccharide capsule,which is mainly responsible for the immune response;the capsule also facilitates classification of the bacterium into several serotypes.[1,2]In vulnerable individuals,the bacterium may lead to the development of invasive pneumococcal disease(IPD),which is defined as an infection of normally sterile locations.

关键词： capsule sterile infection

Determination of energy dissipation of a spider silk structure under impulsive loading

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Frontiers of Mechanical Engineering 2015年第3期10卷 306-310页

作者： Jorge ALENCASTRE carlos MAGO Richard rivera 1.Pontificia Universidad Católica del Perú Lima Perú

Various researches and studies have demonstrated that spider silk is much stronger and more deformable than a steel string of the same diameter from a mechanical approach. These excellent properties have caused many scientific disciplines to get involved, such as bio-mechanics, bio-materials and bio-mimetics, in order to create a material of similar properties and characteristics. It should be noted that the researches and studies have been oriented mainly as a quasi-static model. For this research, the analysis has taken a dynamic approach and determined the dissipation energy of a structure which is made of spider silk ＂Dragline＂ and produced by the Argiope- Argentata spider, through an analytical-experimental way, when being subjected to impulsive loading. Both experi- mental and analytical results, the latter obtained by using adjusted models, have given high levels of dissipation energy during the first cycle of vibration, which are consistent with the values suggested by other authors.

关键词： dissipation energy impact visco-elasticmaterial spider silk

Vector-valued operators, optimal weighted estimates and the C_p condition

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Science China Mathematics 2020年第7期63卷 1339-1368页

作者： María Eugenia Cejas Kangwei Li carlos Pérez Israel Pablo rivera-Ríos BCAM—Basque Center for Applied Mathematics Bilbao 48009Spain CONICET Departamento de MatematicaFacultad de Ciencias ExactasUniversidad Nacional de La PlataLa Plata 1900Argentina Department of Mathematics University of the Basque CountryBilbao 48080Spain Ikerbasque Basque Foundation of ScienceBilbao 48013Spain INMABB CONICETDepartamento de MatematicaUniversidad Nacional del SurBahia Blanca 8000Argentina

In this paper some new results concerning the C_p classes introduced by Muckenhoupt(1981)and later extended by Sawyer(1983),are *** particular,we extend the result to the full expected range p>0,to the weak norm,to other operators and to their vector-valued *** of those results rely upon sparse domination,which in the vector-valued case are provided as *** will also provide sharp weighted estimates for vector-valued extensions relying on those sparse domination results.

关键词： A_p weights quantitative estimates C_p estimates vector-valued extensions sparse domination maximal functions Calderon-Zygmund operators commutators

Pressure drop analysis on the positive half-cell of a cerium redox flow battery using computational fluid dynamics: mathematical and modelling aspects of porous media

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Frontiers of Chemical Science and Engineering 2021年第2期15卷 399-409,F0004页

作者： Fernando F.rivera Berenice Miranda-Alcantara German Orozco carlos Ponce de Leon Luis F.Arenas National Council of Science and Technology(CONACYT) Mexico City 03940Mexico Center of Research and Technological Development in Electrochemistry(CIDETEQ) Queretaro 76703Mexico Electrochemical Engineering Laboratory Energy Technology Research GroupFaculty of Engineering and Physical SciencesUniversity of SouthamptonSouthampton SO171BJUK

Description of electrolyte fluid dynamics in the electrode compartments by mathematical models can be a powerful tool in the development of redox flow batteries(RFBs)and other electrochemical *** order to determine their predictive capability,turbulent Reynolds-averaged Navier-Stokes(RANS)and free flow plus porous media(Brinkman)models were applied to compute local fluid velocities taking place in a rectangular channel electrochemical flow cell used as the positive half-cell of a cerium-based RFB for laboratory *** different platinized titanium electrodes were considered,a plate plus a turbulence promoter and an expanded metal *** pressure drop was validated against experimental data obtained with typical cerium *** was found that the pressure drop values were better described by the RANS approach,whereas the validity of Brinkman equations was strongly dependent on porosity and permeability values of the porous media.

关键词： CFD simulation porous media porous electrode pressure drop redox flow battery

Nuclear factor erythroid 2-related factor 2 a master regulator of retinal vascular regeneration

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Eye Science 2016年第3期31卷 127-129页

作者： Jose carlos rivera Department of Ophthalmology Maisonneuve-Rosemont Hospital Research CenterUniversity of MontrealMontrdalQCCanada

In this issue of PNAS,Wei and colleagues demonstrate that the Nuclear factor erythroid 2-related factor 2(Nrf2),a well-known cell-intrinsic cytoprotective factor and critical regulator of the anti-oxidant response plays an important function in reparative angiogenesis by suppressing the antiangiogenic effects of Semaphorin 6A(Sema6A),a membrane-associated guidance molecule expressed

关键词： In

Gastrointestinal disorders associated with migraine: A comprehensive review

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World Journal of Gastroenterology 2016年第36期22卷 8149-8160页

作者： carlos R Cámara-Lemarroy Rene rodriguez-Gutierrez Roberto Monreal-Robles Alejandro Marfil-rivera Servicio de Neurología Hospital Universitario "Dr. José E. González" Universidad Autónoma de Nuevo León Servicio de Endocrinología Hospital Universitario "Dr. José E. González" Universidad Autónoma de Nuevo León Servicio de Gastroenterología Hospital Universitario "Dr. José E. González" Universidad Autónoma de Nuevo León

Migraine is a recurrent and commonly disabling primary headache disorder that affects over 17% of women and 5%-8% of men. Migraine susceptibility is multifactorial with genetic, hormonal and environmental factors all playing an important role. The physiopathology of migraine is complex and still not fully understood. Many different neuropeptides, neurotransmitters and brain pathways have been implicated. In connection with the myriad mechanisms and pathways implicated in migraine, a variety of multisystemic comorbidities(e.g., cardiovascular, psychiatric and other neurological conditions) have been found to be closely associated with migraine. Recent reports demonstrate an increased frequency of gastrointestinal(GI) disorders in patients with migraine compared with the general population. Helicobacter pylori infection, irritable bowel syndrome, gastroparesis, hepatobiliary disorders, celiac disease and alterations in the microbiota have been linked to the occurrence of migraine. Several mechanisms involving the gut-brain axis, such as a chronic inflammatory response with inflammatory and vasoactive mediators passing to the circulatory system, intestinal microbiota modulation of the enteric immunological milieu and dysfunction of the autonomic and enteric nervous system, have been postulated to explain these associations. However, the precise mechanisms and pathways related to the gut-brain axis in migraine need to be fully elucidated. In this review, we survey the available literature linking migraine with GI disorders. We discuss the possible physiopathological mechanisms, and clinical implications as well as several future areas of interest for research.

关键词： Migraine Headache Microbiota Review Gastrointestinal diseases

Hepatitis C virus molecular evolution:Transmission,disease progression and antiviral therapy

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World Journal of Gastroenterology 2014年第43期20卷 15992-16013页

作者： Maria Victoria Preciado Pamela Valva Alejandro Escobar-Gutierrez Paula Rahal Karina Ruiz-Tovar Lilian Yamasaki carlos Vazquez-Chacon Armando Martinez-Guarneros Juan carlos Carpio-Pedroza Salvador Fonseca-Coronado Mayra Cruz-rivera Laboratorio de Biología Molecular División PatologíaHospital de Ni?os "Ricardo Gutiérrez"Buenos Aires C1425EFDArgentina Instituto de Diagnóstico y Referencia Epidemiológicos Mexico 01480Mexico Department of Biology Institute of BioscienceLanguage and Exact ScienceS?o Paulo State UniversityS?o José do Rio PretoSP 13560-970Brazil Laboratorio de Inmunobiología de Enfermedades Infecciosas Unidad de Investigación MultidisciplinariaFacultad de Estudios Superiores CuautitlánUniversidad Nacional Autónoma de MéxicoCuautitlán IzcalliEstado de México 54714Mexico Departmento de Microbiología y Parasitología Facultad de MedicinaUniversidad Nacional Autónoma de MéxicoMexico City 04510Mexico

Hepatitis C virus(HCV)infection represents an important public health problem *** of HCV morbidity and mortality is a current challenge owned to several viral and host *** molecular evolution plays an important role in HCV transmission,disease progression and therapy *** high degree of genetic heterogeneity characteristic of HCV is a key element for the rapid adaptation of the intrahost viral population to different selection pressures(e.g.,host immune responses and antiviral therapy).HCV molecular evolution is shaped by different mechanisms including a high mutation rate,genetic bottlenecks,genetic drift,recombination,temporal variations and *** evolutionary processes constantly rearrange the composition of the HCV intrahost population in a staging *** advances in the understanding of the molecular mechanism controlling HCV replication have facilitated the development of a plethora of direct-acting antiviral agents against *** a result,superior sustained viral responses have been *** rapidly evolving field of anti-HCV therapy is expected to broad its landscape even further with newer,more potent antivirals,bringing us one step closer to the interferon-free era.

关键词： Hepatitis C virus Evolution Phylogenetics Drug resistance Clinical outcome

Inhibition of the growth and development of mosquito larvae of Culex quinquefasciatus(Diptera:Culicidae) treated with extract from leaves of Pseudocalymma alliaceum(Bignonaceae)

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Asian Pacific Journal of Tropical Medicine 2014年第8期7卷 594-601页

作者： carlos Granados-Echegoyen Rafael Pérez-Pacheco Marcos Soto-Hernndez Jaime Ruiz-Vega Luicita Lagunez-rivera Nancy Alonso-Hernandez Rene Gato-Armas CIIDIR-OAXACA Instituto Poluécnico NacionalCalle Hornos 1003Santa CruzXoxocotlnOaxacaMéxico.C.P.71230 Colegio de Postgraduados MontecilloEstada de MéxicoMexico Institute de Medicina Tropical "Pedro Kouri" La HabanaCuba

Objective:To determine larvicidal activity of the essential oil,hydrolat and botanical extracts derived from leaves ol Pseudocalymma alliaceum an mosquito larvae of Culex ***:Groups of twenty lanae were used in the larvicidal *** mortality,relative growth rate,the larval and pupal duration and viability was *** essential oil was analyzed by solid phase microextraction using gas chromatography coupled to mass ***:Essential oil at 800 ppm showed larvicidal activity at 24 h with lethal values of LC_(50) and LC_(90) of 267.33 and 493.63 *** hvdrolat at 20% and 10% on 2nd stage larvae showed 100%effectiveness after 24 *** aqueous extract at 10% had a relative growth index of *** the ethanolic and methanolic extract obtained values of 0.76 and 0.70 and control reached *** treated with 10% of methanol,ethanol and aqueous extract showed a reduction in larval duration of 5.00,2.20 and 4.35 days;ethanol extract at 1% provoke decrease of 2.40 days in the development and exhibited an increment of 3.30 days when treated with 0.01%.Aqueous,ethanol and methanol extracts at 10%reduced in 6.15,3.42 and 5.57 days pupal *** main compounds were diallyl disulfide(50.05%),diallyl sulfide(11.77%) and disulfide di-2-propenyl(10.37%).Conclusions:The study demonstrated for the first time,the larvicidal activity of the essential oil and hydrolat of Pseudocalymma alliaceum:aqueous,ethanol and methanol extracts inhibited the normal growth and development of mosquito larvae,prolonging and delaying larval and pupal duration.

关键词： Pseudocallyma Mosquito control growth inhibition Botanical extracts Essential oils Hydrolat