Virulence Structure of the Wheat Powdery Mildew Population in Serbia

Powdery mildew is a common, economically important disease in the wheat growing area of Serbia. A large-scale virulence survey of its causal agent Blumeria graminis f. sp. tritici population was performed in the period 1995–2013. A total of 1013 isolates were recovered from the collected chasmothecial samples. Among them, 862 unique pathotypes were identified using a differential set of 20 wheat lines with known powdery mildew (Pm) resistant genes. The pathogen was highly diverse. Number of virulence genes (virulence complexity) per isolate was large, supporting a constant need to extend the differential set of wheat with newly identified Pm genes. Virulence frequencies to Pm6, Pm7, and Pm5+8 were high throughout the 19-year period, in contrast with that to Pm5+6, which was consistently at a low level. The most significant change in the population was observed for virulence to the Pm2+4b+6 gene combination, with an increasing frequency of virulence to this gene combination over the years. High virulence complexity and genetic diversity of the population are the most influential factors for the damaging epidemics that this pathogen can cause.

Intelligent Automatic 3D Printing Machine Based on Wireless Network Communication

With the advent of the era of big data, people have higher requirements for material and spiritual gains and happiness, and their demands for various services in the communications field are diversified. The most significant change is the 3D printing technology. With its unique advantages, 3D printing is gradually sweeping the world. In order to explore whether the technology or digital model based on wireless network communication can realize the automation and intelligence of 3D printing, this article applies a variety of scientific methods such as simulation experiment method, data collection method, and sample analysis method; collects samples; and simplifies the algorithm, using basic experimental methods, orthogonal experiments, and single-factor experiments to study the various influencing factors in the automatic printing process to obtain the optimal parameter combination. Experimental results show that with the support of wireless communication network hardware and data, the timeliness and quality of 3D printing can be significantly improved. These are the basis for realizing 3D printing automation and intelligence. Further experiments show that the wireless communication network intelligent automatic 3D printing machinery adjusts 3D printing parameters through wireless communication technology, combined with intelligent real-time monitoring and sensing equipment; we can find that the printing efficiency of the 3D printing machinery is increased by about 15%, and the economic cost is saved by about 20%. It basically shows the practicality of the experimental research results.

Cheers! Selling Health and Happiness: Advertising Alcohol in New Zealand, c.1900-1945.

<p>Abstract At the turn of the 20th century New Zealand’s newspapers were filled with advertising material offering information on a wide variety of products. Among these advertisements were those for alcohol, a commodity which the advertisements claimed to have multiple benefits, including those of a restorative and curative nature. This thesis will examine how two product groups, alcoholic beverages claiming medicinal value, and patent medicines containing alcohol, were advertised in selected New Zealand newspapers and magazines during the years 1900-1945. The advertising of these two groups was, in many ways, similar. Both used evocative text and images, with the images changing from drawn illustrations to photographs, and both targeted groups, linking these to specific drinks. For example, tonic wine advertising was aimed at women suffering from psychological distress, while beer and spirit advertisements targeted men and sporting codes, and patent medicine advertisements were designed to attract mothers and those suffering from respiratory illnesses. While both alcohol and patent medicines were subject to legislation this was not always effective. The Quackery Act 1908, which should have impacted on both alcohol and patent medicine advertising had no effect on either group. Patent medicine advertisers however, responded to the Physical Welfare Recreation Act 1937, and the Social Welfare Act 1938 with images of active, healthy children. The Medical Advertisements Act 1942 impacted immediately on alcohol advertising. but was not as successful with patent medicines. Both groups had significant changes affecting their advertising. For example, patent medicine advertising was dramatically altered by the discovery of vitamins. This, to a large extent, moved the impetus of many of these advertisements from illness to health. Two factors influenced alcohol advertising: the first being Prohibition Referenda which saw the emergence of advertising focused on placing alcohol in the household medicine chest. This highlighted the use of alcohol as a commodity commonly used in the home for medical and other emergencies and these advertisements informed readers of what could be lost if prohibition were passed. The second, and most significant change came about with the Medical Advertisements Act 1942 when any mention of cure or relief became unlawful.</p>

Cheers! Selling Health and Happiness: Advertising Alcohol in New Zealand, c.1900-1945.

<p>Abstract At the turn of the 20th century New Zealand’s newspapers were filled with advertising material offering information on a wide variety of products. Among these advertisements were those for alcohol, a commodity which the advertisements claimed to have multiple benefits, including those of a restorative and curative nature. This thesis will examine how two product groups, alcoholic beverages claiming medicinal value, and patent medicines containing alcohol, were advertised in selected New Zealand newspapers and magazines during the years 1900-1945. The advertising of these two groups was, in many ways, similar. Both used evocative text and images, with the images changing from drawn illustrations to photographs, and both targeted groups, linking these to specific drinks. For example, tonic wine advertising was aimed at women suffering from psychological distress, while beer and spirit advertisements targeted men and sporting codes, and patent medicine advertisements were designed to attract mothers and those suffering from respiratory illnesses. While both alcohol and patent medicines were subject to legislation this was not always effective. The Quackery Act 1908, which should have impacted on both alcohol and patent medicine advertising had no effect on either group. Patent medicine advertisers however, responded to the Physical Welfare Recreation Act 1937, and the Social Welfare Act 1938 with images of active, healthy children. The Medical Advertisements Act 1942 impacted immediately on alcohol advertising. but was not as successful with patent medicines. Both groups had significant changes affecting their advertising. For example, patent medicine advertising was dramatically altered by the discovery of vitamins. This, to a large extent, moved the impetus of many of these advertisements from illness to health. Two factors influenced alcohol advertising: the first being Prohibition Referenda which saw the emergence of advertising focused on placing alcohol in the household medicine chest. This highlighted the use of alcohol as a commodity commonly used in the home for medical and other emergencies and these advertisements informed readers of what could be lost if prohibition were passed. The second, and most significant change came about with the Medical Advertisements Act 1942 when any mention of cure or relief became unlawful.</p>

Intensity of land use by pasture as result of pedogeoclimatic characteristics and anthropogenic management

In the world, the most significant change in the ecosystems structure is the conversion from natural land surface into cultivated systems. In 2018, 26.8% of the Brazilian territory was occupied by agricultural activities, from which 73% is pasture. Considering that the management adopted in Brazilian pastures is incipient and leads to degradation, there is a need to characterize the state of the pastures to diagnose the intensity of this use on the soil. However, the diagnosis of large areas using satellites with more detailed resolution is limited by cloud coverage and low temporal resolution. In this sense, the present work aims to diagnose the intensity of land use by pastures (ILUP) in large areas based on the mosaic of images from Landsat 8 (LS8), Landsat 7 (LS7), Sentinel-2 (S2), and MODIS. The methodology consists of harmonizing the NDVI from LS7 and S2 satellites with LS8. For MODIS, the harmonization was carried out based on ILUP obtained previously from NDVI LS8. The methodology was applied at the Doce river basin (DRB). The combination of different sensors allowed to overcome the cloud coverage limitation. DRB has 61.3% of its area occupied by pastures and 78.2% of them have some degree of degradation. ILUP was dependent on DRB’s pedological and climatic characteristics. This dependence is enhanced due to pasture management in the basin, mainly characterized by continuous grazing, which commonly leads to overgrazing scenarios. The areas with great rainfall seasonality and associated with Acrisols/Cambisols are the most susceptible to degradation.

Cultivating Pedagogy for Transformative Learning: A Decade of Undergraduate Agroecology Education

Existing scholarship on agroecology and food systems education within U.S. colleges and universities has focused primarily on preparing students to be professionals working in agrifood systems. Developing students' skills and competencies, though vitally important, may not suffice for supporting transformative learning. Transformative learning shifts students' perceptions and awareness and informs future actions, constituting a potential avenue for leveraging education to support transformations toward more socially just and ecologically viable agrifood systems. It is unclear, however, what pedagogies and educational practices enable transformative learning. This paper explores the integration of multiple pedagogical innovations within an advanced agroecology course taught at the University of Vermont. Over a decade, the teaching team has made iterative adjustments to course content and pedagogies with the goal of catalyzing action toward transforming agrifood systems. In this paper, we evaluate our pedagogical approach, asking: (1) How well do course content and pedagogy align with our definition of transformative agroecology as transdisciplinary, participatory, action-oriented, and political? (2) How well does our approach enable transformative agroecological learning, and how is that identified? We present our course evaluation as a case study comprising qualitative analyses of course syllabi, student comments on University-administered course evaluations, and most significant change (MSC) reflections. MSC reflections proved to be a valuable method for identifying and assessing transformative learning. Through a curricular review, we found that substantial changes to course content and evaluative assignments between 2010 and 2020 align with a transformative approach to agroecology. This is validated in students' MSC reflections, which provide evidence of transformative learning. In sharing evaluative results, processes, and insights, we aim to contribute to a broader movement of scholar educators committed to iteratively and collaboratively developing transformative pedagogies within agroecology and sustainable food system education. We contend that reflexive practice among educators is necessary to leverage education for transforming agrifood systems.

Productivity and chemical composition of green biomass from Sudan grass, grown as a second crop, with optimal and insufficient water supply

The aim of the present study is to determine the impact of the disturbed irrigation regime on the yield and the chemical composition of Sudan grass, grown as a second crop. To accomplish this goal, a trial was conducted in the experimental field of the Agricultural Institute - Stara Zagora with Sudan grass on meadow-cinnamon soil under irrigated conditions. The following variants have been studied: 1 - without irrigation (control variant); variant 2 - optimal irrigation, 75-80% of field capacity (FC); variant 3 - irrigation as in variant 2, but with the removal of the first watering; variant 4 - irrigation as variant 2, but with the removal of the second irrigation; variant 5 - irrigation as variant 2, but with the removal of the third watering. It was found that when growing Sudan grass as a second crop with optimal irrigation and disturbed irrigation regime done by canceling successive watering, the highest yield of dry biomass is obtained with optimal irrigation including three irrigations. Its yield increased by 24.2% compared to the control treatment. Irrigation of Sudan grass with only the second and the third irrigation in a row, without the first irrigation provided, leads to the lowest yield of dry biomass - 11290 kg / ha. Among the chemical composition indicators, the most significant change is observed in the content of the crude fat, followed by that of the crude fiber and crude protein, depending on the method of growing Sudan grass (with or without irrigation).

In Vivo Reflectance Confocal Microscopy as a Response Monitoring Tool for Actinic Keratoses Undergoing Cryotherapy and Photodynamic Therapy

Reflectance confocal microscopy (RCM) presents a non-invasive method to image actinic keratosis (AK) at a cellular level. However, RCM criteria for AK response monitoring vary across studies and a universal, standardized approach is lacking. We aimed to identify reliable AK response criteria and to compare the clinical and RCM evaluation of responses across AK severity grades. Twenty patients were included and randomized to receive either cryotherapy (n = 10) or PDT (n = 10). Clinical assessment and RCM evaluation of 12 criteria were performed in AK lesions and photodamaged skin at baseline, 3 and 6 months. We identified the RCM criteria that reliably characterize AK at baseline and display significant reduction following treatment. Those with the highest baseline odds ratio (OR), good interobserver agreement, and most significant change over time were atypical honeycomb pattern (OR: 12.7, CI: 5.7–28.1), hyperkeratosis (OR: 13.6, CI: 5.3–34.9), stratum corneum disruption (OR: 7.8, CI: 3.5–17.3), and disarranged epidermal pattern (OR: 6.5, CI: 2.9–14.8). Clinical evaluation demonstrated a significant treatment response without relapse. However, in grade 2 AK, 10/12 RCM parameters increased from 3 to 6 months, which suggested early subclinical recurrence detection by RCM. Incorporating standardized RCM protocols for the assessment of AK may enable a more meaningful comparison across clinical trials, while allowing for the early detection of relapses and evaluation of biological responses to therapy over time.

Tracing the Link Between Transformative Education and Social Action Through Stories of Change

The following article describes how one organization, the Coady International Institute, met multiple monitoring, evaluation, research, and learning objectives while still staying true to its roots in transformative adult education. The Learning from Stories of Change (LSC) methodology brought together stories-based techniques with aspects of the Most Significant Change and the SenseMaker frameworks. The combination of methods was designed to facilitate reflection and a degree of participatory analysis in an online environment that reached over 400 graduates in 64 countries. It produced a rich set of data that provided key insights into program design and confirmed the transformative adult education model—particularly, that increases in knowledge and skills must be accompanied by changes in attitudes and motivations in order to make the leap from concepts to practice. This leads to individual behavioral changes that will in turn initiate positive social change in communities around the world.

Business Behavior in the Face of Severe Weather: Studying the Effects of Deterministic and Probabilistic Warning Systems

Tornadoes are nature’s most violent storm and annually cause billions in damage along with the threat of fatalities and injuries. To improve tornado warnings, the National Weather Service is considering a change from a deterministic to a probabilistic paradigm. While studies have been conducted on how individual behavior may change with the new While studies have been conducted on how individual behavior may change with the new businesses. This project is a response to the Weather Research and Forecasting Innovation Act of 2017, H.R. 353, which calls for the use of social and behavioral science to study and improve storm warning systems. The goal is to discuss business response to probabilistic tornado warnings through descriptive and regression-based statistics using a survey administered to businesses in North Texas. Prior to release, the survey was vetted by a focus group comprised of businesses in Grayson County, TX who assisted in the creation of a behavior ranking scale. The scale ranked behaviors from low to high effort. Responses allowed for determining if the business reacted to the warning in a passive or active manner. Returned surveys came from large and small businesses in North Texas and represent a wide variety of industries. Regression analysis explores which variables have the greatest influence on businesses’ behavior and show that beyond increases in probability from the probabilistic warnings, trust in the warning provides the most significant change to behavior.