检索结果-南通市图书馆

Impact of ZnSO_(4)^(-)and ZnO Nanoparticles on Seed Germination and Seedling Growth of Lettuce

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Phyton-International Journal of Experimental Botany 2023年第6期92卷 1831-1840页

作者： Adalberto Benavides-mendoza Rebeca Betancourt-galindo Nazario Francisco-Francisco Departamento de Horticultura Universidad Autónoma Agraria Antonio NarroSaltillo25315México Departamento de Materiales Avanzados Centro de Investigación en Química AplicadaSaltillo25294México Departamento de Agricultura Sustentable y Protegida Universidad Tecnológica de TehuacánTehuacán75859México

Micronutrient nanoparticles(NPs)are currently an option for chemical fertilization and biostimulation in ***,there is little information on the phytotoxic or biostimulatory effects of NPs at low concentrations of some elements,such as *** this study,the effect of low concentrations of Zn oxide(ZnO)NPs on germination,growth variables,and nutritional attributes of lettuce(Lactuca sativa L.)was evaluated in comparison to Zn *** lettuce seeds were treated with ZnSO_(4)^(-)×7H_(2)O and ZnO NPs at Zn molar concentrations of 1×10^(−3),5×10^(−3),1×10^(−4),5×10^(−4),1×10^(−5),5×10^(−5),1×10^(−6),and 5×10^(−6).The seeds treated with ZnSO4−at 5×10^(−6)registered the highest radicle length,73%more than the control *** seeds treated with ZnSO4−at 5×10^(−3)registered the lowest values,with 50%less than the control *** NPs at 5×10^(−6)significantly increased content of chlorophyll A and B and total *** results indicate the possible existence of a mechanism related to the intrinsic nanoparticle properties,especially at low concentrations.

关键词： Micronutrients biostimulation nanotechnology nanofertilizers germination chlorophyll total phenols

Minimum inhibitory but maximum non-hemolytic concentration of plasma-treated catheters coated with *** and *** extracts

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Plasma Science and Technology 2023年第12期25卷 83-96页

作者： Francisco Javier ALONSO-MONTEMAYOR Miriam Desirée DÁVILA-MEDINA Alejandro ZUGASTI-CRUZ Rosa Idalia NARRO-CÉSPEDES María guadalupe NEIRA-VELÁZQUEZ AidéSÁENZ-galindo Eduardo ALONSO-CAMPOS Autonomous University of Coahuila Saltillo 25280Mexico Center for Research in Applied Chemistry Saltillo 25294Mexico University of Monterrey San Pedro Garza García 66238Mexico

Antibacterial extract-coated catheters are promising alternatives to their conventional counterparts,but their hemocompatibility and thermal stability must be *** bacteria have developed resistance to conventional ***,the minimum inhibitory but non-hemolytic concentration(MIC-NH)and the thermal stability of Larrea tridentata(***)and Origanum vulgare(***)extract-coated catheters were ***,plasma pretreatment was performed to enhance the extract ***,the extract-coated catheters prevent Staphylococcus aureus colonization without causing hemolysis by using *** and *** extracts at MIC-NH(5000 and 2500μg ml~(-1),respectively).Moreover,it has been discovered that the extract coating and plasma treatment improved the thermal stability and the extract adhesion,***,this study provides evidence of alternative antibacterial but non-hemolytic extract-coated catheters.

关键词： antibacterial activity biocompatibility blood-contact device cold plasma nosocomial bacteria

Bioinformatic Analysis of Potential Pathogenicity Effectors of <i>Candidatus</i>Liberibacter asiaticus, Causal Agent of Citrus Huanglongbing

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

American Journal of Plant Sciences 2020年第8期11卷 1319-1330页

作者： Felipe Roberto Flores-de la Rosa Cynthia guadalupe Rodríguez-Quibrera Cristian Matilde-Hernández Ricardo Santillán-mendoza Campo Experimental Ixtacuaco Instituto Nacional de Investigaciones Forestales Agrícolas y Pecuarias (INIFAP) Km 4.5 Carretera Federal Martínez de la Torre-Tlapacoyan Tlapacoyan Veracruz México

Huanglongbing (HLB) or citrus greening is currently the most important citrus disease, caused by the bacterium Candidatus Liberibacter asiaticus (CLas). The impossibility of isolating it causes understanding its pathogenic mechanisms to be a complicated task. Recent studies identified 16 proteins with the signal peptide needed to be secreted in the plant and cause the disease. The present study aims to perform a bioinformatic analysis of these proteins with the function prediction approach by gene ontology (GO) and the detection of conserved domains. It was observed that of the 16 proteins analyzed not all are found in different infective strains reported in the literature. The GO analysis allowed us to relate different proteins with the biological process of energy and pathogenic activity, especially CLIBASIA_03315 and CLIBASIA_05115, respectively. The domain analysis allowed the observation of a β-CA domain, tentatively related to the damage caused to the chloroplast and a PAAR domain associated with the T6SS secretory system. Our results provide information on the possible function of potential pathogenicity effectors in CLas.

关键词： Effectors Proteins Function Prediction Gen Ontology Domains Citrus Greening

Analysis of Land Use and Land Cover Changes and Evaluation of Natural Generation and Potential Restoration Areas in the Mexican Huasteca Region

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Open Journal of Forestry 2014年第2期4卷 124-135页

作者： Carmelo Peralta-Rivero Carlos Contreras-Servín María G.galindo-mendoza Jean-Francois Mas Caussel Marcos Algara-Siller Multidisciplinary Graduate Programme in Environmental Sciences Autonomous University of San Luis/Coordination for Innovation and the Application of Science and TechnologySan Luis PotosiMexico Institute of Geography National Autonomous University of MexicoMoreliaMexico Multidisciplinary Graduate Programme in Environmental Sciences Faculty of EngineeringEnvironmental EngineeringAutonomous University of San LuisSan Luis PotosiMexico

This study aims to analyze temporal changes in land use and land cover change (LUCC) as well as identify areas for natural regeneration and potential areas for forest restoration in the Huasteca region for the period from 1976 to 2007. Changes were quantified in numbers and, additionally, cartography was used to identify and map the main affected areas. Different models based on Geographic Information Systems (GIS) demonstrated that LUCC have occurred on an area of 11718.82 km2, representing 17.84% of the region’s surface. Agriculture and the growth of pasture could be identified as the main human-induced activities that have led to landscape modification. In addition, forest cover is affected by a deforestation rate which is higher than the national average. Further important changes include a change from natural land cover to non-original land cover, affecting an area of 4911.88 km2 in the period from 1976-1993, and an area of 1892.5 km2 in the period from 1993-2002. Smaller changes could be observed for the period from 1993-2002 with an affected area of 1029.78 km2. At the same time, a natural regeneration from nonoriginal to original land cover took place from 1976-1993 on an area of 1318.68 km2, and also on an area of 974.18 km2 between 1993 an 2002. The surface that underwent a natural regeneration of forest cover made up 1932.07 km2. At the same time, an area of 5739.29 km2 for potential forest restoration was identified. Drawing on GIS methods and techniques, the development of thematic maps for land use, land use and land cover changes for the years of analysis (1976-1993-2002-2007) proved to be very adequate for the evaluation and analysis of the land cover and land use change, in particular with regard to the decrease of natural vegetation cover.

关键词： Land User Land Cover Natural Regeneration Forest Restoration LUCC GIS Temporal Analysis Huasteca

In the monarch butterfly the juvenile hormone effect upon immune response depends on the immune marker and is sex dependent

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Open Journal of Ecology 2013年第1期3卷 53-58页

作者： guadalupe Villanueva Humberto Lanz-mendoza Salvador Hernandez-Martinez Minerva Sanchez Zavaleta Javier Manjarrez Jose MContreras-Garduno Jorge Contreras-Garduno Center of Research in Biotic Resources Autonomous University of Mexico StateTolucaMexico Center of Research in Infectious Diseases National Institute of Public HealthCuernavacaMexico Institute of Ecology National Autonomous University of MexicoMexico CityMexico Department of Biology University of GuanajuatoGuanajuatoMexico

In insects, juvenile hormone (JH) decreases or has any effect upon the phenoloxidase (PO) activity, and favors or decreases the Antimicrobial Peptides (AMPs) expression. Although there is no information about the differential effect of such hormone, two possibilities are that it depends on (a) the immune marker recorded and (b) sexual differences. Here, three commonly used immune markers, Phenoloxidase (PO), hydrogen peroxide (H2O2), and lytic activity, were measured 3, 6 and 24 hours after administration of methoprene (JHa, an analog of juvenile hormone) in male and female monarch butterflies (Danaus plexippus). At 3 and 6 h post-JHa administration, the PO activity increased in females but it only increased at 3 h in males, whereas H2O2 levels increased only in females at 3 h. For the remaining times the JHa had a null effect on POand H2O2. On the other hand, the JHa had a null effect for lytic activity in both sexes at 3, 6 and 24 h. To our knowledge, this is the first report of a positive effect of a JHa onPOand H2O2 and suggests that this effect is sex dependent.

关键词： Immune Response Life History Juvenile Hormone Reproductive Diapause Nitric Oxide

Novel contributions of multimodality imaging in hypertension:A narrative review

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Hypertension 2015年第2期5卷 28-40页

作者： Erick Alexanderson-Rosas Enrique Berríos-Bárcenas Aloha Meave Juan Carlos de la Fuente-Mancera Mariano Oropeza-Aguilar Alejandro Barrero-Mier Andrea de guadalupe Monroy-González Raul Cruz-mendoza Gerardo Yoshiaki Guinto-Nishimura Nuclear Cardiology Department National Institute of Cardiology Ignacio ChávezMexico City 14080Mexico Cardiac Magnetic Resonance Department National Institute of Cardiology Ignacio ChávezMexico City 14080Mexico

Hypertension is currently one of the most prevalent il nesses worldwide,and is the second most common cause of heart failure,only behind ischemic *** development of novel multimodality imaging techniques in recent years has broadened the diagnostic methods,risk stratification and monitoring of treatment of cardiovascular diseases available for *** magnetic resonance(CMR) has a great capacity to evaluate cardiac dimensions and ventricular function,is extremely useful in ruling-out ischemic cardiomyopathy,the evaluation of the vascular system,in making the differential diagnosis for resistant hypertension and risk stratification for hypertensive cardiomyopathy and constitutes today,the method of choice to evaluate left ventricular systolic *** tomography(CT) is the method of choice for the evaluation of vascular anatomy,including coronary arteries,and is also able to provide both functional and structural ***,nuclear cardiology studies have been traditionally used to evaluate myocardial ischemia,along with offering the capacity to evaluate ventricular,endothelial and cardiac innervation function;information that is key in directing the treatment of the *** this narrative review,the most recent contributions of multimodality imaging to the patient with hypertension(CMR,CT and nuclear cardiology) will be reviewed.

关键词： Cardiac imaging techniques Multimodality imaging Magnetic resonance imaging Multidetector computed tomography Cardiac-gated single photon emission computed tomography Positron emission tomography Hypertension

Reference penile size measurement and correlation with other anthropometric dimensions:a prospective study in 800 men

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Asian Journal of Andrology 2022年第6期24卷 620-623页

作者： Martina Sole Ignacio Tobia Gonzalezi Martin Compagnucci guadalupe Colucci Marcos Dalvit Bernardo Chiconi Omar A Layus Guillermo Gueglio Gaston Rey-Valzacchi Department of Urology at Hospital Italiano Buenos Aires C1199ABBArgentina Department of Urology at Sanatorio Allende Cordoba 5000Argentina Department of Urology at Hospital Privado de la Comunidad Mar del Plata 7600Argentina Department of Urology at Hospital Central Mendoza 5500Argentina

Virility and sexual pleasure have long been associated with penile size and this,in turn,has typically been linked to some anthropometric measurements,such as foot size or height,leading to various misconceptions from both men and *** intention is to estimate penile size parameters in Argentina and evaluate the correlation between penile size and certain anthropometric *** is a cross-sectional,descriptive,multicenter,and observational *** patients who underwent a urological procedure were included in four hospitals located in different regions of the *** anthropometric measurements were obtained:height,weight,penile circumference,flaccid and stretched length,and foot length.A total of 8o0 patients were *** left foot was 26.4 *** flaccid penile length was 11.4(95%confidence interval[CI]:8-14)cm,and mean penile circumference was 10.1(95%CI:8-12)***,mean stretched penis was 15.2(95%CI:11-18.5)*** can confirm that estimates of the average penile measurements in Argentina are flaccid penis length of 11.4 cm,penile circumference of 10.1 cm,and stretching the penis to the maximum in flaccidity of 15.2 *** between flaccid penis length,stretched out,penile circumference,height,weight,and length of the left foot were evaluated,finding low or no correlation between those mentioned,exceptforflaccidand stretched length.

关键词： anthropometric measurements micropenis penile percentile

Relationship between Tomato (Solanum lycopersicum) Nutrition and the Severity of the Vascular Fusariosis

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Agricultural Sciences 2023年第4期14卷 570-583页

作者： mendoza-Medrano Daniel López-Orona Carlos Alfonso Martínez-Gallardo José Ángel López-Urquidez guadalupe Alfonso Angulo-Castro Azareel León-Félix Josefina Agronomy Faculty Universidad Autónoma de Sinaloa Culiacán México Centro de Investigación en Alimentación y Desarrollo Culiacán México

The vascular fusariosis is one of the main obstacles in the tomato crop production. Currently, the management of the nutrient solution is presented as a control option for fusariosis, for such reason different nutrient solutions with nitrogen (N), phosphorus (P), potassium (K) and calcium (Ca) modifications;in four saladette tomato varieties Bony Best (BB), Manapal (M), Walter (W) and FLA were evaluated in this research, in order to analyze the damage caused by Fusarium oxysporum ***. lycopersici (FOL) severity. Tomato plants were inoculated with 3 FOL breeds, establishing a completely random design with a factorial arrangement with six repetitions. Disease’s severity was evaluated 30 days after the inoculation using levels of (0 - 4) of the methodology established by Marlatt and Correll (1988). Afterwards, a statistical analysis was done through the Kruskal Wallis test, in which it was observed that treatments 93 (Ca 207 mg∙L-1, R3, variety BB), 95 (207 mg∙L-1 Ca, R3, variety W), 81 (0Ca, R3, BB) showed less disease severity. In the foliar analysis, the best treatments were 22 (193 mg∙L-1 N, R3, M) for N, the greatest P content was treatment 94 (207 mg∙L-1 Ca, R3, M) for K treatment three and 93 (207 mg∙L-1 Ca, R3, variety BB) greatest Ca content.

关键词： Fusarium oxysporum f.sp. lycopersici Nutrient Solution Cultural Control

Pig Reproductive and Respiratory Syndrome Virus (PRRSV) Does Not Attach to Boar Sperm;It Affects Only the Velocity Pattern and the Mobility Pattern

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Biosciences and Medicines 2024年第4期12卷 216-228页

作者： Néstor Méndez Palacios Netzi Naidí Mendez Palacios Felicitas Vázquez Flores José Alfredo Galicia Domínguez Edgar guadalupe Beltrán Rosas Maximino Méndez mendoza Facultad de Medicina Veterinaria and Zootecnia-Benemé rita Universidad Aut&#243noma de Puebla Puebla Mexico Independent Advisor in the Porcine Area Puebla Mexico

The purpose of the study was to evaluate the sperm viability of semen infected with PRRSV viral particles, observing the effect of the Virus on the motility of boar sperm. The work was carried out at the FMVZ-BUAP Genetics and Reproduction Laboratory. 5 stallions were used. Each sample contained 1 × 106 sperm, the PRRS virus strain was ATCC-VR-2332 (0, 102, 104 and 106 copies of RNA/mL in triplicate), it was observed daily at the CASA;Hamilton Thorne®. Cells with MT (P 2 and 10X6 (P 2) 162.81 ± 10.65 and (106) 177.12 ± 5.77 vs 193.04 ± 4.62 of control. This indicates that altering these parameters would be related to fertility and the PRRS virus affects the LCV. Regarding the VSL, it was observed that the sperm infected with viruses 102, 104 and 106 of 48.00 ± 3.38, 49.88 ± 1.83 and 50.55 ± 2.24 Vs. 56.66 ± 1.68 of control respectively, the control would have greater possibilities of fertilizing the oocyte. In this study, it was found (P ≤ 0.01) in the VAP with 102 of 77.26 ± 5.16, 104 with 83.35 ± 2.41 and 106 with 81.29 ± 3.14 vs the control with 90.56 ± 2.07. Regarding the ALH there is (P 4 with 8.70 ± .26 and 106 with 9.64 ± 0.23 vs control 8.50 ± 0.27. The presence of different concentrations of PRRSV in boar semen induces changes in different types of sperm motility. Infection of ej

关键词： PRRSV Boar Sperms Velocity Pattern and Mobility Pattern