Neutrino masses and mixing angles from leptoquark interactions

In this paper we show that the mixing between leptoquarks (LQ's) from different $SU(2)_l$ multiplets can generate a non-trivial Majorana mass matrix for neutrinos through one loop self energy diagrams. Such mixing can arise from gauge invariant and renormalizable LQ-Higgs interaction terms after EW symmetry breaking. We use the experimental indication on neutrino oscillation to find constraints on specific combinations of LQ couplings to quark-lepton pairs and to the SM higgs boson. These constraints are compared with the ones from $\pi\to e\bar {\nu}_e$.Comment: The expressions for majorana mass matrix of neutrinos have been corrected so that they are symmetric. Final version to be published in Physical Review

Multimessenger Characterization of Markarian 501 during Historically Low X-Ray and γ-Ray Activity

We study the broadband emission of Mrk 501 using multiwavelength observations from 2017 to 2020 performed with a multitude of instruments, involving, among others, MAGIC, Fermi's Large Area Telescope (LAT), NuSTAR, Swift, GASP-WEBT, and the Owens Valley Radio Observatory. Mrk 501 showed an extremely low broadband activity, which may help to unravel its baseline emission. Nonetheless, significant flux variations are detected at all wave bands, with the highest occurring at X-rays and very-high-energy (VHE) 3-rays. A significant correlation (>3σ) between X-rays and VHE 3-rays is measured, supporting leptonic scenarios to explain the variable parts of the emission, also during low activity. This is further supported when we extend our data from 2008 to 2020, and identify, for the first time, significant correlations between the Swift X-Ray Telescope and Fermi-LAT. We additionally find correlations between high-energy 3-rays and radio, with the radio lagging by more than 100 days, placing the 3-ray emission zone upstream of the radio-bright regions in the jet. Furthermore, Mrk 501 showed a historically low activity in X-rays and VHE 3-rays from mid-2017 to mid-2019 with a stable VHE flux (>0.2 TeV) of 5% the emission of the Crab Nebula. The broadband spectral energy distribution (SED) of this 2 yr long low state, the potential baseline emission of Mrk 501, can be characterized with one-zone leptonic models, and with (lepto)-hadronic models fulfilling neutrino flux constraints from IceCube. We explore the time evolution of the SED toward the low state, revealing that the stable baseline emission may be ascribed to a standing shock, and the variable emission to an additional expanding or traveling shock. © 2023. The Author(s). Published by the American Astronomical Society

Multi-messenger characterization of Mrk 501 during historically low X-ray and γ\gamma-ray activity

We study the broadband emission of Mrk 501 using multi-wavelength observations from 2017 to 2020 performed with a multitude of instruments, involving, among others, MAGIC, Fermi-LAT, NuSTAR, Swift, GASP-WEBT, and OVRO. Mrk 501 showed an extremely low broadband activity, which may help to unravel its baseline emission. Nonetheless, significant flux variations are detected at all wavebands, with the highest occurring at X-rays and very-high-energy (VHE) $\gamma$-rays. A significant correlation ($>$3$\sigma$) between X-rays and VHE $\gamma$-rays is measured, supporting leptonic scenarios to explain the variable parts of the emission, also during low activity. This is further supported when we extend our data from 2008 to 2020, and identify, for the first time, significant correlations between Swift-XRT and Fermi-LAT. We additionally find correlations between high-energy $\gamma$-rays and radio, with the radio lagging by more than 100 days, placing the $\gamma$-ray emission zone upstream of the radio-bright regions in the jet. Furthermore, Mrk 501 showed a historically low activity in X-rays and VHE $\gamma$-rays from mid-2017 to mid-2019 with a stable VHE flux ($>$0.2 TeV) of 5% the emission of the Crab Nebula. The broadband spectral energy distribution (SED) of this 2-year-long low-state, the potential baseline emission of Mrk 501, can be characterized with one-zone leptonic models, and with (lepto)-hadronic models fulfilling neutrino flux constraints from IceCube. We explore the time evolution of the SED towards the low-state, revealing that the stable baseline emission may be ascribed to a standing shock, and the variable emission to an additional expanding or traveling shock.Comment: 56 pages, 30 figures, 14 tables, submitted. Corresponding authors are L. Heckmann, D. Paneque, S. Gasparyan, M. Cerruti, and N. Sahakya

A retail plan for Pepe Jeans Southmall Store

The Philippine retail industry has always been one of the major forces shaping the Philippine economy. Over the years, the retail sector has continuously shown a strong and positive performance. This signals that businesses should always be competitive to capture a portion of the market. The group\u27s proposed retail plan is for Pepe Jeans Southmall, which is one of the outlets under Saldana and Company, Incorporated. It is evident that the store has the potential to be one of the top jeans and apparel store amidst the high competitiveness of all the other jeans and apparel stores because of its stylish and high quality products. Therefore, the plan aims to maximize this potential, increase awareness and establish the image as well as to increase sales of Pepe Smith Jeans Southmall. As part of our study, a judgment sampling method was conducted to measure people\u27s awareness of Pepe Jeans Southmall\u27s, its attractiveness as a store against others in the same trading area, and the target market\u27s perceptions. In addition, the group came up with a situation audit to further analyze the trade area. The proposal plan covers both the external and internal environment of the store. This includes programs concerning working competence of the management and staff managing and operating systems improving store procedures and policies that would generate innovations marketing, advertising and promotional effort to boost sales and establish the image. Financial statements are presented from 1999-2000 including existing estimated figures and projected incremental sales to assess the financial matters of the company. A budget of P87,160 was allotted to promotions, advertising and others in order to yield a gross income of P173,471 at the end of the year 2000. After implementation, results of the overall retail plan would be evaluated through analysis of sales performance, sales promotions, awareness and customer satisfaction. Fast-paced changes in the retail environment have resulted to a diverse consumer behavior. Businesses who are able to cope up with the changes are the ones that would survive. The groups proposed retail plan takes advantage of opportunities to become the most recognized and influential brand name, providing a dynamic and complete collection of clothing that precede trends, while guaranteeing an outstanding quality of products and customer service. This paper focuses on Pepe Jeans SM Southmall branch. Primary information was gathered through interviews with the companys senior officers and employees of Pepe Jeans. The group was able to collect primary data from surveys conducted on Pepe Jeans target market. However, sales figures given by the company are only estimated figures, the reason for which is due to confidentiality of the financial documents. Secondary data such as reports, surveys, industry studies, and others were collected from various research institutions and libraries. This include the Department of Trade and Industry, Securities of Exchange and Commission, Philippine Retailers’ Association, Bureau of Investments, University of Asia and the Pacific, National Statistics Office, and De La Salle University. However, some of the data gathered are dated as far back as 1993 since these are the most recent data available in the research institutions. This paper proposes programs for Pepe Jeans Southmall branch. However, it is at the managements discretion whether to use the programs o the other branches or not. Programs created are not only limited to one calendar year. These activities can reap both short term and long term benefits and may be applied to other Pepe Jeans branches if desired

Versatile Object Counting System (VOCS)

Automated object counting is the process where a computer and other relevant hardware are utilized to track, identify and count the number of objects in a region. The purpose of automated object counting system is to provide fast and objective results with few errors. However, majority of the current automated counting system have a fixed design where the user has no choice but to adopt to how the system works. Consequently, this limits the capabilities of the system in recognizing objects and the use of the system for only a particular application. This research study entitled Versatile Object Counting System (VOCS) intends to create an automated object counting system that uses different Digital Signal Processing (DSP) techniques, separates adjacent objects, and bases its criteria on user-selected attributes in counting objects. The attributes include shape, size, color, texture and orientation. For each selected attribute, the user can vary the respective similarity measure. These features result to a flexible automated object counting system that is applicable to almost any field or real world application such as robotics, medicine, security systems, and in the industry. VOCS employs functions that perform noise filtering and object segmentation on an input image before the attributes of each individual object are extracted. Different algorithms are implemented to determine the similarity between the attributes of an input object and the reference object. Should the user-defined criteria be satisfied by the similarity, then the input object is highlighted and tallied for user verification. VOCS is able to locate, identify and count objects in the input image. Object detection is 100% accurate for input images containing similar objects and 98.89% in the case of different objects. The system is able to correctly detect an object through its boundary provided that the contrast between the object and background is high. In cases of touching objects, the system has the capability of separating these objects so that theses are not counted as one. The algorithms used for the separation of adjacent objects yields an accuracy of 92.86% for round objects, 41.9% for rectangular objects, 49.49% for irregularly shaped objects and 11.54% for long and thin objects

Automated object counting with multiple user-defined criteria

Automated object counting applications track, identify and count objects in a bounded image region while providing fast and objective results with minimum errors. A majority of the systems developed, however, utilize a fixed design which limits their adaptability to new types of objects. This paper describes algorithms that can be used for automated object counting systems based on user-selected attributes. The attributes include color, size, shape, orientation and texture, where for each selected attribute, the user can vary the similarity level. The system developed is able to locate, identify and count objects in the input image. The system is also capable of separating touching objects prior to counting. Object detection is100% accurate for input images containing similar objects and98.89% in the case of different objects. The system is able to correctly detect an object through its boundary provided that the contrast between the object and background is high. It can be seen through the performance test on real-world objects that the numerical techniques used for object comparison through the user-defined criteria agree with the manual method of classifying and counting

Perception and attitude of Grade 10 student towards radiologic technology as a paramedical course

Grade 10 students were the respondents and taken from the top feeder schools of De La Salle Health Sciences Institute Radiologic Technology Program in Cavite. The gender and type of school of the respondents were the variables. The researchers used the correlation research design for the analysis and interpretation of the gathered data. A total of 368 respondents were randomly selected. A self-made questionnaire was used in the study to gather the perception and attitude of Grade 10 students towards radiologic technology as a paramedical course. The data obtained was treated using the following tools: mean, percentage, standard deviation, independent t-test and chi-square test. Based on the findings of the study, the following conclusions were drawn: 1) most of the respondents were female and from a public school; 2) the respondents\u27 overall perception towards radiologic technology as a paramedical course achieved a satisfactory result since over-all perception of the respondents is verbally interpreted as positive. However, the statement “Radiologic Technology assures students job stability and will never be out of employment” obtained the lowest mean score value; 3) most of the respondents would consider taking radiologic technology as a paramedical course; 4) the respondents\u27 gender and type of school have a significant difference on their perception towards radiologic technology as a paramedical course. Respondents who are female and from a public school had a more positive perception towards radiologic technology as a paramedical course than male and from a private school; 5) the respondents\u27 gender and type of school have no significant difference on their attitude towards radiologic technology as a paramedical course; 6) there are no significant differences between the respondents\u27 perception and their attitude towards radiologic technology as a paramedical course. The results revealed that regardless of their perception, they had the same attitude towards radiologic technology as a paramedical course

Control of Cryptococcus Gattii Biofilms by an Ethanolic Extract of Cochlospermum Regium (Schrank) Pilger Leaves

Cryptococcus gattii is an etiologic agent of cryptococcosis and a serious disease that affects immunocompromised and immunocompetent patients worldwide. The therapeutic arsenal used to treat cryptococcosis is limited to a few antifungal agents, and the ability of C. gattii to form biofilms may hinder treatment and decrease its susceptibility to antifungal agents. The objective of this study was to evaluate the antifungal and antibiofilm activities of an ethanolic extract of Cochlospermum regium (Schrank) Pilger leaves against C. gattii. The antifungal activity was assessed by measuring the minimum inhibitory concentration (MIC) using the broth microdilution technique and interaction of the extract with fluconazole was performed of checkerboard assay. The antibiofilm activity of the extract was evaluated in 96-well polystyrene microplates, and the biofilms were quantified by counting colony forming units. The extract showed antifungal activity at concentrations of 62.5 to 250 μg/mL and when the extract was evaluated in combination with fluconazole, C. gattii was inhibited at sub-MIC levels. The antibiofilm activity of the extract against C. gattii was observed both during biofilm formation and on an already established biofilm. The results showed that the ethanolic extract of the leaves of C. regium shows promise for the development of antifungal drugs to treat cryptococcosis and to combat C. gattii biofilms

Digestibilidade ileal dos aminoácidos do milho em diferentes níveis de carunchamento pela técnica da anastomose ileo retal com suínos em crescimento.

Milho da variedade BR-201 foi submetida a infestacao por caruncho (Sitophilus zeamais) obtendo-se quatro lotes de graos carunchados em diferentes niveis de carunchamento (1,79; 10,27; 17,49 e 38,15%). Avaliou-se a digestibilidade ileal dos aminoacidos do milho pela tecnica da anastomose ileo-retal com coleta total de fezes sem o uso de marcador. A analise de variancia foi significativa para 6 aminoacidos (arginina, cisteina, fenilalanina, valina, histidina e acido glutamico). Os resultados sugerem que ha uma diferenca na digestibilidade entre as diferentes fracoes de proteina no milho (zeinas e glutelinas)