Stop Decay with LSP Gravitino in the final state: t~1→G~ W b\tilde{t}_1\to\widetilde{G}\,W\,b

In MSSM scenarios where the gravitino is the lightest supersymmetric particle (LSP), and therefore a viable dark matter candidate, the stop $\tilde{t}_1$ could be the next-to-lightest superpartner (NLSP). For a mass spectrum satisfying: $m_{\widetilde{G}}+m_t>m_{\tilde{t}_1}>m_{\widetilde{G}}+m_b+m_W$, the stop decay is dominated by the 3-body mode $\tilde{t}_1\rightarrow b\,W\,\tilde{G}$. We calculate the stop life-time, including the full contributions from top, sbottom and chargino as intermediate states. We also evaluate the stop lifetime for the case when the gravitino can be approximated by the goldstino state. Our analytical results are conveniently expressed using an expansion in terms of the intermediate state mass, which helps to identify the massless limit. In the region of low gravitino mass ($m_{\widetilde{G}}\ll m_{\tilde{t}_1}$) the results obtained using the gravitino and goldstino cases turns out to be similar, as expected. However for higher gravitino masses $m_{\widetilde{G}} \lesssim m_{\tilde{t}_1}$ the results for the lifetime could show a difference of O(100)\%

Techniques Against Language Barriers: A Company Case Study

The United States construction industry employed approximately 10.8 million people in 2020. Of these 10.8 million, an estimated 3.3 million, or 30%, were Hispanic workers. On construction job sites, workers are exposed to numerous safety risks, including falls, struck-by incidents, and electrocution. Unfortunately, some Hispanics or workers with limited English language skills encounter language barriers which cause additional safety concerns. Language barriers impact their communication and comprehension abilities and, consequently, their safety. For example, workers who do not speak English do not benefit from safety training conducted purely in English; they also cannot read operation manuals for machinery and equipment that are written only in English. Communicating with supervisors who don’t speak Spanish about hazards on the job site also becomes difficult. As a result, Hispanics in construction suffer greater workplace injuries and deaths than other groups. This paper presents techniques currently being used by a construction company to reduce the negative safety impacts of language barriers. An interview was held with a company representative, discussing the main themes of this project: (1) language barrier issues encountered on job sites; (2) techniques implemented to combat language barriers; and (3) effectiveness of implemented techniques. Three techniques were presented, including (1) having translators in safety meetings; (2) conducting smaller meetings with groups in their native language; and (3) providing English language training. These techniques can be used as a guide for other companies to consider when developing inclusive safety plans

Assisting School Teacher Veterans Tribute Career & Technical Academy

High schools in the US are not educating student the correct way in which they can first learn to succeed in high school, and they are not preparing and motivating students with there education system to go on to college.https://digitalscholarship.unlv.edu/educ_sys_202/1032/thumbnail.jp

Farmbot

The purpose of this project was to develop the hardware for the current Farmbot to perform its primary functions, and to create a template for a system that would be adaptable for future users and developers. The scope of the project included creating a universal tool mount, a seeding system, and a watering and nutrient mixing system. This project was brought to the students by sponsor Rory Aronson, the creator of Farmbot. The Cal Poly Farmbot team was able to go through an extensive brainstorming and iterative process for each part, where testing was able to be incorporated immediately due to easy access to rapid prototyping from Rory. Each test helped develop the three subsystems further, until properly functional parts were incorporated onto the Farmbot. All the created parts were designed for 3D printability. While this project was a small part of the whole Farmbot, it helped pave the way for future development of each subsystem

First report of Staphylococcus isolates identified by genomic analysis from rhizospheric soils of Capsicum annuum L. cv Piquillo

The genus Staphylococcus comprises many species which can be isolated from many sources and could display plant growth-promoting properties. Moreover, Capsicum species are important export crops in Peru, which have gained greater interest in recent years. Therefore, the objective of this research was to identify Staphylococcus isolates from rhizospheric soil samples of C. annuum cv. Piquillo in La Libertad, Peru. Bacterial isolates were identified by genomic analysis targeting the 16s rRNA gene. Bacteria were isolated from samples by serial dilutions and cultured in solid medium agar plates. Then, genomic DNA extraction from pure and morphologically distinct isolates, 16s rRNA gene amplification, sequencing and bioinformatic analysis were performed. We found four bacterial isolates from the genus Staphylococcus not previously reported in C. annuum rhizospheric soils: Isolate Ca2 and Ca5 which both match to Staphylococcus sp., isolate Ca6 to Staphylococcus arlettae and isolate Ca7 to Staphylococcus xylosus. Further studies to assess these isolates’ impact on crops as well as their potential applications in other fields of research such as antimicrobial development, food processing and pesticide biodegradation are recommended.The genus Staphylococcus comprises many species which can be isolated from many sources and could display plant growth-promoting properties. Moreover, Capsicum species are important export crops in Peru, which have gained greater interest in recent years. Therefore, the objective of this research was to identify Staphylococcus isolates from rhizospheric soil samples of C. annuum cv. Piquillo in La Libertad, Peru. Bacterial isolates were identified by genomic analysis targeting the 16s rRNA gene. Bacteria were isolated from samples by serial dilutions and cultured in solid medium agar plates. Then, genomic DNA extraction from pure and morphologically distinct isolates, 16s rRNA gene amplification, sequencing and bioinformatic analysis were performed. We found four bacterial isolates from the genus Staphylococcus not previously reported in C. annuum rhizospheric soils: Isolate Ca2 and Ca5 which both match to Staphylococcus sp., isolate Ca6 to Staphylococcus arlettae and isolate Ca7 to Staphylococcus xylosus. Further studies to assess these isolates’ impact on crops as well as their potential applications in other fields of research such as antimicrobial development, food processing and pesticide biodegradation are recommended

Peptidases and the Renin-Angiotensin System: The Alternative Angiotensin-(1-7) Cascade

The renin-angiotensin system (RAS) constitutes a key hormonal system in the physiological regulation of blood pressure via peripheral and central mechanisms. Dysregulation of the RAS is considered a major factor in the development of cardiovascular pathologies, and pharmacologic blockades of this system by the inhibition of angiotensin-converting enzyme (ACE) or antagonism of the angiotensin type 1 receptor (AT1R) are effective therapeutic regimens. The RAS is now defined as a system composed of different angiotensin peptides with diverse biological actions mediated by distinct receptor subtypes. The classic RAS comprises the ACE-Ang II-AT1R axis that promotes vasoconstriction, water intake, sodium retention and increased oxidative stress, fibrosis, cellular growth, and inflammation. The nonclassical or alternative RAS is composed primarily of the ACE2-Ang-(1-7)-AT7R pathway that opposes the Ang II-AT1R axis. In lieu of the complex aspects of this system, the current review assesses the enzymatic cascade of the alternative Ang-(1-7) axis of the RAS

Nature Connectedness Moderates the Effect of Nature Exposure on Explicit and Implicit Measures of Emotion

Previous research indicates that both short-term and long-term exposure to natural environments is associated with higher levels of emotional well-being. However, less research has examined whether person-related factors may impact the salutogenic effects of nature. In the current study, we examined whether trait-level nature connectedness moderates the effect of exposure to nature on explicit and implicit measures of affect. Participants (n = 89) completed baseline measurements of trait nature connectedness and affective state. Approximately two weeks later, participants viewed a lab-based immersive simulation of either a natural or built environment and then again completed measures of affective state. Findings indicated that trait nature connectedness moderated the effect of nature on affect, with more positive outcomes of nature exposure observed among those high in nature connectedness. These findings suggest that interacting with nature may be especially beneficial for those who already feel a strong sense of connectedness to the natural environment

Respuesta al fuego de HAC con y sin refuerzo de fibras

Algunas experiencias, básicamente de laboratorio, han trasmitido la idea de que los HAC son mas sensibles frente al fuego, en particular a sufrir fenómenos de explosión durante el mismo; la explicación se ha asociado con una mayor densidad de algunos HAC para similares dosificaciones que el hormigón convencional, relacionado con una mayor dificultad para evacuar el vapor de agua generado durante los procesos de deshidratación de la pasta de cemento, y a las tensiones térmicas generadas en su interior al ser expuestos a altas temperaturas. En este trabajo se analiza la contribución de los distintos componentes de un HAC en su respuesta frente al fuego, tanto en cuanto a su respuesta mecánica como de su microestructura. Finalmente se estudia las modificaciones introducidas por la incorporación al HAC de fibras de diferente procedencia (metálicas, de polipropileno y mezcla) para mejorar sus prestaciones mecánicas. Las resistencias a compresión de los HAC reforzados con fibras no presentan variaciones importantes a las distintas temperaturas, pero la resistencia a tracción mejora ante la presencia de fibras metálicas. La evolución en la porosidad, los cambios en la composición química y microestructura contribuyen a determinar la contribución de los distintos componentes del HAC en la respuesta al fuego