High-yield Cultivation Techniques of Drip Irrigation under Ground Membrane for Cotton

Yuepuhu County in Xinjiang has a long history of cotton planting and is a national high-quality cotton base county.In 2002,it was appraised by the Ministry of Agriculture as the"Hometown of High-yield Cotton Production in China",with an annual cotton planting area of about 43000 ha.Traditional cotton planting has disadvantages such as waste of water resources,low water use efficiency,easy breeding of diseases and insect pests,and unfavorable ground temperature recovery at the seedling stage.In order to solve the low water use efficiency in cotton planting in Yuepuhu County,reduce the occurrence of diseases and insect pests,promote sustainable cotton production,and improve the economic benefits and local ecological benefits of cotton planting,Yuepuhu County promoted the application of the resource-saving technology drip irrigation under ground membrane cotton comprehensive cultivation technology mainly promoted by the Ministry of Agriculture.This paper mainly discusses the disadvantages of traditional cotton planting,the main technical content of drip irrigation under ground membrane technology,the problems found in the practice process and the solutions,so as make cotton growers in Yuepuhu County better understand the planting technology under plastic film,and to better promote the development of cotton industry in Yuepuhu County and the surrounding regions.

Fatigue Safety Assessment of Concrete Continuous Rigid Frame Bridge Based on Rain Flow Counting Method and Health Monitoring Data

The fatigue of concrete structures will gradually appear after being subjected to alternating loads for a long time,and the accidents caused by fatigue failure of bridge structures also appear from time to time.Aiming at the problem of degradation of long-span continuous rigid frame bridges due to fatigue and environmental effects,this paper suggests a method to analyze the fatigue degradation mechanism of this type of bridge,which combines long-term in-site monitoring data collected by the health monitoring system(HMS)and fatigue theory.In the paper,the authors mainly carry out the research work in the following aspects:First of all,a long-span continuous rigid frame bridge installed with HMS is used as an example,and a large amount of health monitoring data have been acquired,which can provide efficient information for fatigue in terms of equivalent stress range and cumulative number of stress cycles;next,for calculating the cumulative fatigue damage of the bridge structure,fatigue stress spectrum got by rain flow counting method,S-N curves and damage criteria are used for fatigue damage analysis.Moreover,it was considered a linear accumulation damage through the Palmgren-Miner rule for the counting of stress cycles.The health monitoring data are adopted to obtain fatigue stress data and the rain flow counting method is used to count the amplitude varying fatigue stress.The proposed fatigue reliability approach in the paper can estimate the fatigue damage degree and its evolution law of bridge structures well,and also can help bridge engineers do the assessment of future service duration.

Socio-economic and Psychosocial Determinants of Smoking and Passive Smoking in Older Adults

Objective To determine the associations of socio-economic and psychosocial factors with active and passive smoking in older adults. Methods Using a standard interview method, we examined random samples of 6071 people aged 〉 60 years in 5 provinces of China during 2007-2009. Results World age-standardised prevalence for current and former smoking in men was 45.6% and 20.5%, and in women 11.1% and 4.5%. Current smoking reduced with older age but increased with men, low socioeconomic status （SES）, alcohol drinking, being never-married, pessimistic and depressive syndromes. Former smoking was associated with men, secondary school education, a middle-high income, being a businessman, being widowed, less frequencies of visiting children/relatives and friends, and worrying about children. Among 3774 never-smokers, the prevalence of passive smoking was 31.5%, and the risk increased with women, low SES, alcohol drinking, being married, having a religious believe, and daily visiting children/relatives. There were sex differences in the associations, and an interaction effect of education and income on smoking and passive smoking. Conclusion Older Chinese had a higher level of smoking and passive smoking than those in high income countries, reflecting China＇s failures in controlling smoking. The associations with low SES and different psychosocial aspects and sex differences suggest preventative strategies for active and passive smoking.

History of Vitamin A Supplementation Reduces Severity of Diarrhea in Young Children Admitted to Hospital with Diarrhea and Pneumonia

Background: Although the role of vitamin A in childhood pneumonia in association with diarrhea is not fully proven, we did not find any published data demonstrating the impact of lack of vitamin A supplementation in under-five children who present with the co-morbidities of pneumonia and diarrhea. This study examined whether previous vitamin A supplementation was associated with reduced severity and duration of diarrhea and pneumonia for children presenting with both illnesses. Methods: All admitted children (n = 189) aged 0 - 59 months to the Special Care Ward of the Dhaka Hospital of icddr,b with diarrhea and radiological pneumonia from September-December 2007 were enrolled. We compared clinical features of the children who received (n = 96) and did not receive (n = 93) high potency capsule vitamin A supplementation during previous immunization according to EPI schedule. Results: In logistic regression analysis, after adjusting for potential confounders such as respiratory rate, lower chest wall in-drawing, severe wasting and systolic blood pressure, vitamin A non-supplemented children with pneumonia and diarrhea more often presented in their early infancy (95% CI 1.01 - 1.09), had duration of diarrhea for >4 days (95% CI 1.79 - 11.88), had clinical dehydration (95% CI 1.2 - 5.63), and more often required hospitalization for >7 days (95% CI 1.03 - 8.87). But, there was no significant difference in the clinical features of pneumonia, such as history of cough, respiratory rate, lower chest wall in-drawing, nasal flaring, head nodding, grunting respiration, cyanosis, and inability to drink between the groups. Conclusion: Lack of vitamin A supplementation in under-five children with radiological pneumonia and diarrhea is independently associated with young infancy, duration of diarrhea for >4 days, dehydration and hospitalization for >7 days which underscores the importance of routine supplementation of vitamin A in young infancy. However, lack of vitamin A supplementation did not influence any clinical signs of pneumonia.

Application of Geotechnical Synthetic Materials in Sponge City Construction

Along with the overall progress and development of market economy,Sponge City has received extensive attention,in order to establish a more compatible with the market development trend and environmental protection requirements of the control mechanism,it is necessary to scientifically plan synthetic materials,to a certain extent,to maintain the basic level of sponge city supervision work.In this paper,the research background of Geosynthetics applied in Sponge City construction is briefly analyzed,and the basic principles and specific application paths are discussed,which are for reference only.

Experiment of Water Soluble Fertilizers Containing Humic Acid in Tomato Planting

As a natural macromolecular organic compound,humic acid can promote plant growth.Water soluble humic acid fertilizers refer to liquid or solid water soluble fertilizers made by adding appropriate amounts of nitrogen,phosphorus,potassium macroelements or zinc,boron,iron,molybdenum,manganese,copper and other trace elements or organic matter,based on humic acid in the required proportions for plant growth.In order to verify the application effect of humic acid containing water soluble fertilizer produced by Tai’an Gold Land Chemical Co.,Ltd.,in tomato production in Daiyue District,Tai’an City,a fertilizer effect application experiment of humic acid containing water soluble fertilizer on tomato planting was specially carried out.The results showed that the water soluble fertilizer containing humic acid could obviously improve the agronomic characters of tomato;the yield was significantly increased;the effect of increasing the income of tomato growers was obvious.

Safety Parts of Body to Respiration with Breathing Apparatus in Dangerous Zone

People are witnesses of life imperilling and working background too, as today, even during the evolution. People＇s life interface is disturbed with different shapes of contamination： natural disasters （floods, earthquakes, volcanic eruptions and the other）; on purpose or accidentally-different shapes like： wars, fires, chemical fates, using of dangerous materials in production processes and everyday life... In these mentioned specific conditions, breathing is imperiled, like the vital function of men＇s life and working interfaces. With the technical-technology progress, it is enclosed the development equipment for protection and safety of the respiratory parts of body, faces and eyes, regard to breathing apparatus. Applying the breathing apparatus, the total protection of the respiratory parts of the body, faces and eyes to aggressive materials, smoke and warmth is enabled. Today in the world there are many producers of breathing apparatus with similar technical-technological solutions, of which should be mentioned the main ones： MSA Auer, Dr/iger and Interspiro. Using of the breathing apparatus in practice, continual performation of different activities without consequences for the health and life of the user is enabled, what firstly depends on the user＇s education, regular using, controlling examination and maintenance/servicing.

Dynamic Reliability Assessment of Heavy Vehicle Crossing a Prototype Bridge Deck by Using Simulation Technology and Health Monitoring Data

Overloads of vehicle may cause damage to bridge structures,and how to assess the safety influence of heavy vehicles crossing the prototype bridge is one of the challenges.In this report,using a large amount of monitored data collected from the structural health monitoring system(SHMS)in service of the prototype bridge,of which the bridge type is large-span continuous rigid frame bridge,and adopting FEM simulation technique,we suggested a dynamic reliability assessment method in the report to assess the safety impact of heavy vehicles on the prototype bridge during operation.In the first place,by using the health monitored strain data,of which the selected monitored data time range is before the opening of traffic,the quasi dynamic reliability around the embedded sensor with no traffic load effects is obtained;then,with FEM technology,the FEM simulation model of one main span of the prototype bridge is built by using ANSYS software and then the dynamic reliability when the heavy vehicles crossing the prototype bridge corresponding to the middle-span web plate is comprehensively analyzed and discussed.At last,assuming that the main beam stress state change is in the stage of approximately linear elasticity under heavy vehicle loads impact,the authors got the impact level of heavy vehicles effects on the dynamic reliability of the prototype bridge.Based on a large number of field measured data,the dynamic reliability value calculated by our proposed methodology is more accurate.The method suggested in the paper can do good for not only the traffic management but also the damage analysis of bridges.

Risk factors for ventilator-associated pneumonia among patients undergoing major oncological surgery for head and neck cancer

Patients undergoing major oncological surgery for head and neck cancer （SHNC） have a particularly high risk of nosocomial infections. We aimed to identify risk factors for ventilator-associated pneumonia （VAP） in patients undergoing SHNC. The study included 465 patients who underwent SHNC between June 2011 and June 2014. The rate of VAP, risk factors for VAP, and biological aspects of VAP were retrospectively evaluated. The incidence of VAP was 19.6~0 （n = 95） in patients who required more than 48 h of mechanical ventilation. Staphylococcus （37.7%）, Enterobacteriaceae （32.1%）, Pseudomonas （20.8%）, and Haemophilus （16.9~） were the major bacterial species that caused VAP. The independent risk factors for VAP were advanced age, current smoking status, chronic obstructive pulmonary disease, and a higher simplified acute physiology score system II upon admission. Tracheostomy was an independent protective factor for VAP. The median length of stay in the ICU for patients who did or did not develop VAP was 8.0 and 6.5 days, respectively （P = 0.006）. Mortality among patients who did or did not develop VAP was 16.8% and 8.4%, respectively （P 〈 0.001）. The potential economic impact of VAP was high because of the significantly extended duration of ventilation. A predictive regression model was developed with a sensitivity of 95.3% and a specificity of 69.4%. VAP is common in patients who are undergoing SHNC and who require more than 48 h of mechanical ventilation. Therefore, innovative preventive measures should be developed and applied in this high-risk population.

Effects of different structural parameters and the medium environment on plasmonic lattice resonance formed by Ag nanospheres on SiO2 nanopillar arrays

The effects of the diameter of SiO2 nanopillars,the diameter of Ag nanospheres,the arrays’period,and the medium environment on the plasmonic lattice resonance(PLR)formed by Ag nanospheres on SiO2 nanopillar arrays are systematically investigated.Larger diameters of SiO2 nanopillars with other parameters kept constant will widen the PLR peak,redshift the PLR wavelength,and weaken the PLR intensity.Larger diameters of Ag nanospheres with other parameters kept constant will widen the PLR peak,redshift the PLR wavelength,and strengthen the PLR intensity.Larger array periods or larger refractive index of medium environment corresponds to larger PLR wavelengths.