bluuebunny/crossref_metadata_2025 huggingface dataset:
The Association of Illness-related Uncertainty With Mental Health in Systemic Autoimmune Rheumatic Diseases
Authors: Wallace Zachary S. , Cook Claire , Finkelstein-Fox Lucy , Fu Xiaoqing , Castelino Flavia V. , Choi Hyon K. , Perugino Cory , Stone John H. , Park Elyse R. , Hall Daniel L.
Published: April 2022

Objective

Patients with systemic autoimmune rheumatic diseases (SARDs) face illness-related uncertainty, but little is known about the psychological profiles and psychosocial and health needs associated with uncertainty among adults with SARDs.

Methods

Patients from the Massachusetts General Hospital with antineutrophil cytoplasmic antibody-associated vasculitis (AAV), IgG4-related disease (IgG4-RD), and systemic sclerosis (SSc) completed the Mishel Uncertainty in Illness Scale, 8-item Patient Health Questionnaire depression scale, 7-item General Anxiety Disorder scale, Sickness Impact Profile, and a survey of psychosocial needs. The associations of uncertainty and self-reported needs with depression, anxiety, and sickness impact were assessed.

Results

One hundred thirty-two patients with AAV (n = 41, 31%), IgG4-RD (n = 61, 46%), or SSc (n = 30, 23%) participated. The mean age was 64 years, 52% were female, and 83% were White. Greater illness-related uncertainty was positively correlated with higher levels of depression (r= 0.43,P< 0.001), anxiety (r= 0.33,P< 0.001), and sickness impact (r= 0.28,P= 0.001). We observed variations in these measures across SARDs, such that uncertainty was more strongly associated with depression and sickness impact in AAV or SSc compared to IgG4-RD. The primary needs that patients endorsed were services for managing physical symptoms (53%), self-care (37%), and emotional concerns (24%), with greater needs strongly associated with greater illness-related uncertainty.

Conclusion

Among patients with SARDs, illness-related uncertainty is correlated with levels of depression, anxiety, and sickness impact, as well as psychosocial needs. Findings also implicate the need for targeted interventions to address uncertainty and needs among subgroups of patients with different illness profiles.
The effect of different storage times and methods on the chemical and organoleptic properties of white cooked rice and black cooked rice
Authors: Purwaningsih Heni , Kristamtini  , Rahardjo Pamudji , Nusantoro Bangun Prajanto , Apriyati Erni , Indrasari Siti Dewi , Rubiyo
Published: April 2022

Storage of rice for a certain period of time can lead to decrease in the quality of rice, hence the purpose of this study was to determine the effect of storage method and duration on total sugar content, starch, and preference level of Inpari 43 GSR white rice and black rice Sembada Hitam varieties. The research was conducted at the Food Biochemical Chemistry Laboratory, Faculty of Agricultural Technology, Gajah Mada University The stage of this research is to cook the rice, and the storage time in two ways inside and outside the rice cooker is 0, 9, 18, and 27 hours, respectively. Then tested for sugar content, starch and level of preference. The experimental design used was factorial randomized design with 3 replications The stage of this research is to cook the rice, and the storage time in two ways inside and outside the rice cooker is 0, 9, 18, and 27 hours, respectively. Then tested for sugar content, starch and level of preference. The experimental design used was a factorial randomized design with 3 replications, while the Sembada Hitam variety had initial sugar content of 0.019%, and 0.007% when in stored in the rice cooker and 0.001% outside the rice cooker. The increase in starch content increased at 9 hours of storage in Inpari 43 GSR and Sembada Hitam varieties and a decreased at 18 and 27 hours. Based on the test of preference for color, aroma, taste and texture, panelists preferred 9 hours of storage in the rice cooker both on rice Inpari 43 GSR and Sembada Hitam because more suitable for consumption.
Approximations for the von Neumann and Rényi entropies of graphs with circulant type Laplacians
Authors: Bebiano Natália , da Providência João , Xu Wei-Ru
Published: April 2022

In this note, we approximate the von Neumann and Rényi entropies of high-dimensional graphs using the Euler-Maclaurin summation formula. The obtained estimations have a considerable degree of accuracy. The performed experiments suggest some entropy problems concerning graphs whose Laplacians are $ g $-circulant matrices, i.e., circulant matrices with $ g $-periodic diagonals, or quasi-Toeplitz matrices. Quasi means that in a Toeplitz matrix the first two elements in the main diagonal, and the last two, differ from the remaining diagonal entries by a perturbation.
$ q $-Noor integral operator associated with starlike functions and $ q $-conic domains
Authors: Shah Syed Ghoos Ali , Khan Shahbaz , Hussain Saqib , Darus Maslina
Published: April 2022

In this paper, we will discuss some generalized classes of analytic functions related with conic domains in the context of $ q $-calculus. In this work, we define and explore Janowski type $ q $-starlike functions in $ q $ -conic domains. We investigate some important properties such as necessary and sufficient conditions, coefficient estimates, convolution results, linear combination, weighted mean, arithmetic mean, radii of starlikeness, growth and distortion results for these classes. It is important to mention that our results are generalization of number of existing results.
Monotone set-valued measures: Choquet integral, $ f $-divergence and Radon-Nikodym derivatives
Authors: Gong Zengtai , Shen Chengcheng
Published: April 2022

Divergence as a degree of the difference between two data is widely used in the classification problems. In this paper, $ f $-divergence, Hellinger divergence and variation divergence of the monotone set-valued measures are defined and discussed. It proves that Hellinger divergence and variation divergence satisfy the triangle inequality and symmetry by means of the set operations and partial ordering relations. Meanwhile, the necessary and sufficient conditions of Radon-Nikodym derivatives of the monotone set-valued measures are investigated. Next, we define the conjugate measure of the monotone set-valued measure and use it to define and discuss a new version $ f $-divergence, and we prove that the new version $ f $-divergence is nonnegative. In addition, we define the generalized $ f $-divergence by using the generalized Radon-Nikodym derivatives of two monotone set-valued measures and examples are given. Finally, some examples are given to illustrate the rationality of the definitions and the operability of the applications of the results.
Appropriation of value in biomedical research outcome at public research organisations
Authors: Kensah David , Groen Aard
Published: April 2022

Transactions on biomedical research outcomes bring into play strategies that are determined by leveraging resources into quasi-markets and on options based on expectations. To govern such transactions, the choice of appropriate governance structures and the governance of interaction are all too often in remittance of risk and uncertainty. Organisation and communities are prompted by issues concerning intellectual property (IP) to underwrite information, which is inherently fraught with difficulties of discerning ownership and quantifying qualitative business variables. Against that backdrop, we enquire on the mechanisms underpinning value dissipation and value appropriation of biomedical research outcomes to make proposition on the organisational antecedence to innovation. It is a preamble study with the view to developing a meso-level framework to describe mechanisms of value appropriation of upstream biomedical (non-invasive) research at Public Research Organisation. Its underpinning is largely based on the availability appropriability regimes and viability of organizational governance decisions and how the choice of organizational governance form affects both the creation and appropriation of economic value.
Ambition driven entrepreneurship in higher education
Authors: van der Meer Han , Wierstra Erik , Boeije Janneke
Published: April 2022

In this paper the results of a broad survey under all students (response 69%, n=12,481) and management of all faculties of Saxion University will be presented. Saxion is a university of applied sciences located in the East of the Netherlands with 18.000 students divided over 13 faculties and 64 studies. The survey was held in the summer of 2007 and will be repeated for several years. It is shown that the interest of students to start their own company is large (over 55% in the general population) and varies over the several faculties (range 13% - 81%). A total number of 287 student companies is identified for further in depth study. Some of these cases of student companies are included in the paper. The total number of student companies at Saxion University can be estimated at 415. Based on the results of the survey a funnel type of approach is suggested to boost the number and quality of the Saxion University spin off firms to reach a total number to a turnover of 250 companies a year, to double the recent output since this doubling is the ambition of the management of Saxion University. A rather traditional approach of stimulating measures is the backbone of this funnel but the philosophy behind it is going much deeper. The authors suggest to use a model for the development of a spin off company based on three independent sub processes : - development of formula - development of organization - development of ambition The most important sub process here is the development of ambition. One of the basic rules of supporting instruments should be the nurturing of the real and deep ambition of the young entrepreneur. This may seem in contrast with the more traditional supporting instruments like providing shovel money and helping to make a business plan. New instruments should be developed to nurture and stimulate ambition. But first of all : When a university wants to attract ambitious young entrepreneurial students it starts with the ambition of the university itself.
Design of public support for R&D: a study of Turkish technoparks
Authors: Koçak Özgecan , Can Özge
Published: April 2022

We report on and examine the consequences of the Turkish experience with public support for science/ technology parks (STPs). The Turkish government has been supporting STP development through a 2001 legislation that provides significant tax exemptions for tenants of STPs established according to its mandate. While the law has been successful in encouraging more than twenty STPs to be established, and getting more than 800 firms to move to STPs by 2007, it also has had some unintended consequences that seem to work against fulfillment of the full intention of the law. Using archival data collected by the Ministry of Trade and Industry, survey data collected from STP managers, and in-depth interviews with STP managers, tenants, university administrators, and other actors involved in STP governance, we report on the overall tenant population of STPs in Turkey and some practices and outcomes that are relevant for assessing the impact of the public support on R&D. The data at hand point to some significant progress being made as well as some shortcomings.
Managing innovation for growth in high technology small firms
Authors: Laine Kari
Published: April 2022

This paper studies ways to support sustainable growth in high technology small firms by managing innovation. The paper examines technology based and knowledge intensive business service firms (KIBS) and their innovation management in Finland. The goal is to find at least one meaningful innovation process for a small KIBS firm that takes growth into consideration. In the paper incremental, radical, disruptive, open and systemic innovation are seen from small KIBS firm perspective a model that combines these types of innovation is presented. Two cases of small technology based small KIBS firms are also selected to closer examination.
An investigation on environmental scanning and growth strategy in high tech small and medium sized enterprises
Authors: Karami Azhdar
Published: April 2022

The idea that environmental scanning can be a key factor to sustained competitive advantage calls for the integration of business strategy and environment. Not surprisingly, environmental scanning is widely viewed as the first step in the process linking strategy and environment. The main debate in strategy and environment is nowadays concerned with the primary importance of environmental scanning to strategy formulation and implementation. More specially, effective scanning of the environment is seen as necessary to the successful alignment of competitive strategies with environmental requirements and the achievement of outstanding performance in SMEs. This paper explores the above relationship in the British electronic manufacturing industry. It is based on the empirical evidence and the findings of a survey of 132 Chief Executive Officers’ (CEO) views on environmental scanning and strategy in SMEs. It is concluded that, there is a significant relationship between increasing the environmental scanning of the firm, and the success of the firm’s performance in small and medium sized manufacturing firms in electronic industry. Accordingly, because of dynamic aspect of electronic industry, obtaining information on several aspects of environmental sectors facilitates alignment between business strategy and environment.
The rising of the new generation of high-tech entrepreneurs: an exploratory study
Authors: Giacon Paolo
Published: April 2022

Who are the high-technology entrepreneurs: superheroes or jack-of-all-trades? Is there a new generation of young entrepreneurs who “think different” and use new and unexpected perspectives to imagine their business, products and mission? This paper presents some empirical evidences emerging from a multiple case study composed by 20 Italian technology intensive firms. After a review of the high-technology entrepreneur topic, some typologies of the Italian high-tech entrepreneurs are analyzed and finally an elementary classification is proposed in order to clarify the difference between “old” and “new way” entrepreneurship. New trends, behaviours, strategies and business models are explored in order to contribute to the academic debate and the practical knowledge about high-technology entrepreneurship. The last section of the paper suggests a future research agenda.
Intrusion Detection System Using Deep Learning Asymmetric Autoencoder (DLAA)
Authors: Singh Arjun , Chauhan Surbhi , Gupta Sonam , Yadav Arun Kumar
Published: April 2022

To protect a network security, a good network IDS is essential. With the advancement of science and technology, present intrusion detection technology is unable to manage today's complex and volatile network abnormal traffic without taking into account the detection technology's scalability, sustainability, and training time. A new deep learning method is presented to address these issues, which used an unsupervised non-symmetric convolutional autoencoder to learn the dataset features. Furthermore, a novel method based on a non-symmetric convolutional autoencoder and a multiclass SVM is proposed. The KDD99 dataset is used to create the simulation. In comparison to other approaches, the experimental outcomes suggest that the proposed approach achieves good results, which considerably lowers training time and enhances the IDS detection capability.
Efficient Bitcoin Mining Using Genetic Algorithm-Based Proof of Work
Authors: Mehta Shikha , Mehta Shikha , Goyal Mukta , Saini Dinesh
Published: April 2022

Blockchain requires to validate the block with confirmed transactions from the unconfirmed pool of transactions through Miners. Miners pick up the transactions from the pool of unconfirmed transactions approximately more than 2000 and solve the algorithmic puzzle i.e. also known as proof of work within the limited period of time. To maximize the throughput per second requires optimization of the time period to solve the algorithm puzzle for validating the block. Conventionally, for unconfirmed transactions, miners solve the proof of work using brute force algorithms which consume a lot of electrical energy due to the huge number of computations. To optimize the time for block chain mining, this paper proposes a Genetic algorithm based block mining (GAMB) approach to fetch the transactions from the unconfirmed pool of transactions in order to validate the block within a limited period of time. It is a population based algorithm which attempts to solve the proof of work for multiple transactions in parallel. The performance of GAMB is evaluated for transactions from 1000 to 5000.
Examination of Privacy and Security Perceptions of Social Media and Online Shopping Users
Authors: Çetintaş Erkan , Daştan İkram
Published: April 2022

In a period when the protection of the privacy of personal information and data belonging to internet users became extremely important, this study intends to evaluate, analyze and present the privacy and security perceptions of social media and online shopping users. After examination of five factors related to the information privacy and security, the research aims at investigating the relationship between these factors and their impacts on online users’ protection behaviors (protection and concealment). The research also intends to make a comparison between Turkish and American online users in terms of privacy and security perceptions and their online protection behaviors. The theoretical basis of the study is the Protection Motivation Theory and the study is an explanatory research based on quantitative research methods that is seeking answers to specific questions and testing hypotheses with a positivist approach. After the obtained findings have been evaluated, the limitations of the study are determined and some suggestions regarding to the future research are presented.
An Enhanced Data Anonymization Approach for Privacy Preserving Data Publishing in Cloud Computing Based on Genetic Chimp Optimization
Authors: Sahana Lokesh R.  , Ranganatha H.R.
Published: April 2022

The data privacy. It is the biggest challenge in medical field to share and publish sensitive information about an individual to the cloud infrastructure. Therefore, it is essential to protect the patients’ information with high security and more data privacy. In this paper, a novel technique based on Mondrian based k-anonymization incorporated with Genetic-Chimp Optimization Algorithm is proposed to protect the privacy of the patients. The optimization algorithm employs average equivalence value and generalized information loss for the calculation of fitness value. Moreover, DNA-Genetic algorithm based encryption technique is also implemented after anonymization process to give extra protection to the anonymized database. The performance of the proposed privacy preservation technique is evaluated with respect to parameters such as information loss, privacy and utility. It can be observed that the proposed approach shows better results and it is efficient to preserve the privacy of medical databases when compared to other techniques.
On the Student Internet Activity via Both Virtual Simulations and Remote Laboratory for Scientific Education
Authors: Mazuritskiy Mikhail I. , Dabagov Sultan B.
Published: April 2022

Focusing on the approach for developing professional skills, this paper is dedicated to the University on-line education as a pedagogical tool for material science and solid state physics as well. Two strategies described within the comparative analysis are based on the students tests performed at the Southern Federal University. A remote access to the research laboratory infrastructure allows our approach for the interactive simulations-based learning process with the provision of individual educational programs to be launched. This problem is presently of urgent interests, and applied in material science we have discussed its importance from different perspectives, i.e. to teach X-ray spectroscopy via the interactive software simulation of modern equipment or to perform a research at remote laboratories in a real time. Within this note we conceptually analyse some quantitative data of the learning process for a number of students that formed at both interactive sense-making and learning by doing.
Online Learning Environment and Psychological Readiness During COVID-19
Authors: Hossain Md. Kabir , Rahaman Mohammad Mizenur , Chowdhury Adiba Rahman Bushra
Published: April 2022

Several psychological terms, such as depression, anxiety, and worries, included COVID-19, the unexpected discontinuity of students' lives, and the extreme confusion concerning the recovery to normality was profoundly disappointing experiences. The Core objective of this study is to investigate the psychological readiness and online learning collaboration of secondary level students during Covid-19 in Bangladesh. The study illustrates the current state of education in Bangladesh and the importance of reliance on the emotional desire to learn online. The significant finding shows that the students’ psychological readiness has a strong positive association with the online learning environment to ensure quality education. It is necessary to look into the school level student’s mental readiness to bring down the future uncertainty; digital-hostile spite, the student’s emotional willingness for online learning. The study suggests some policies for the resilience and improvement of students' psychological readiness in developing countries, especially in Bangladesh.
Optimal Routing for Vehicles and Pedestrians in the Urban Area
Authors: Kim Gitae , Choe Jinsik
Published: April 2022

Traffic congestions, road conditions, and other factors have increased the complexity of vehicle routing problem in urban area. Travel time of a vehicle is obtained by the sum of travel times of road segments. However, the travel time of road segments may not be sufficient to estimate the travel time of a route. When a vehicle arrives at a demand site, the final customer may be in a distance from the vehicle if the site is a complicated building or has a lack of parking space. In this case, we have to consider the route of persons including drivers or service persons. In this paper, we develop integer programming models for the vehicle and pedestrian routing problem. The proposed model provides the strategy to find the optimal route of the vehicle and pedestrians.
LiTasNeT
Authors: Boulmaiz Amira , Meghni Billel , Redjati Abdelghani , Azar Ahmad Taher
Published: April 2022

Recent advances in deep learning techniques and acoustic sensor networks offer a new way for continuously monitoring birds. Deep learning methods have led to considerable progresses in audio source separation (ASS). However, it is still a challenge to deploy models based on deep learning on embedded devices. Therefore, find an efficient solution to compact these large models without affecting ASS performance has become an important research topic. In birds' natural habitat, it is common for several birds to sing simultaneously. This phenomenon will lead to false results when identifying a particular bird species. Separate required bird sound from the recorded mixture becomes indispensable. In this paper, a novel so-called Lite TasNet (LiTasNeT) is proposed. Based on conventional ASS methods, LiTasNeT has obtained leading results in several standardized ASS areas. LiTasNeT is designed with parameter-sharing scheme to lower the memory consumption. Moreover, his low latency natures make it definitely suitable for real-time on-device applications.
Yield and profitability responses of cowpea to cropping systems and sowing seasons in Vitória da Conquista, Bahia State, Brazil
Authors: Fogaça Josué Júnior Novaes Ladeia , Cairo Paulo Araquém Ramos , Cardoso Adriana Dias , São José Alcebíades Rebouças , Vasconcelos Ramon Correia de , Souza Ubiratan de Oliveira , Nunes Renan Thiago Carneiro
Published: April 2022

Cowpea (Vigna unguiculata) crops produce a poor yield in northeastern Brazil compared to the other regions. The goal of this study was to assess the effects of irrigated cropping systems and sowing seasons on cowpea yield and profitability in Vitória da Conquista, Bahia, Brazil. Field studies were performed in four experiments during the rainy and dry seasons during 2016/2017 and 2017/2018, which denoted harvests 1, 2, 3, and 4, respectively. A randomized block design was used for each experiment with four replicates and the following treatments for cropping systems: (1) manual weeding; (2) liming and manual weeding; (3) liming and phosphorus (P) fertilization at sowing, nitrogen (N) and potassium (K) topdressing fertilization, and chemical weed control; (4) liming and P fertilization at sowing, K topdressing fertilization, rhizobia inoculation, and chemical weed control; (5) liming and P fertilization at sowing, N and K topdressing fertilization, rhizobia inoculation, and chemical weed control; and (6) seed pretreatment with cobalt (Co) and molybdenum (Mo), liming and P fertilization at sowing, N and K topdressing fertilization, rhizobia inoculation, and chemical weed control. The technology added to cropping systems increased the number of pods per plant, pod length, seeds per pod, and 100-seed weight, irrespective of the rainy or dry sowing season. Economic analysis, in turn, showed that the technology decreased the total operating cost despite increasing the cost of mechanical operations, inputs, and materials because of the replacement of manual weeding by chemical weed control. However, these costs were not influenced by the sowing seasons. We concluded that technologically enhanced cropping systems, especially systems 4 and 6, improved grain yield and provided greater profitability, which translated into improved economic benefits for farmers. Conversely, the sowing season influenced profitability, which was higher for dry season harvests, when there was less product offered and prices became higher.
Prospection of putative genes for digestive enzymes based on functional genome of the hepatopancreas of Amazon river prawn
Authors: Rocha Cássia Pantoja , Maciel Carlos Murilo Tenório , Valenti Wagner C. , Moraes-Valenti Patricia , Sampaio Iracilda , Maciel Cristiana Ramalho
Published: April 2022

Over recent years, Macrobrachium amazonicum has become a popular species for shrimp farming due to their fast growth, high survival rates, and marketability. Several studies have focused on the development of new technology for the culture of this species, but many aspects of their nutrition and physiology remain unknown. Thus, the goal of the present study was to obtain transcripts of putative genes encoding digestive enzymes, based on a library of the cDNA from the hepatopancreas of M. amazonicum, sequenced in the Ion TorrentTM platform. We identified fragments of nine genes related to digestive enzymes, acting over proteins, carbohydrates and lipids. Endo and exoproteases were also recorded in the hepatopancreas, indicating adaptation to the digestion of protein-rich foods. Nonetheless, the enzymes involved in the carbohydrate metabolism formed the largest functional group in M. amazonicum, including enzymes related to the digestion of starch, chitin, and cellulose. These findings indicate that the species has a genetic apparatus of a well-adapted omnivorous animal. This information may provide important insights for the selection of ingredients for the formulation of a more appropriate diet to the enzymatic repertoire of M. amazonicum.
Beak trimming in japanese quails at initial phase is an alternative to reduce the negative effects of feather pecking
Authors: Cruvinel Jéssica Moraes , Montenegro Andressa Takahara , Ouros Caio Cesar dos , Alves Kauan de Souza , Ribeiro Gabriela Costa , Santos Tatiane Souza dos , Molino Andrea de Britto , Garcia Edivaldo Antônio
Published: April 2022

Regarding the lack of standardized methods for beak trimming to reduce feather pecking in Japanese quail, the present study aimed to compare two ages and 3 methods of beak trimming, evaluating the performance, egg quality and feather pecking. One-day-old Japanese quails (n = 770; 22 birds cage-1), at the initial phase, and 36-day-old (n = 630; 18 birds cage-1), at the production phase, were assigned to a completely randomized design, consisting of 7 treatments with 5 replicates. The treatments were: non-trimmed (NT), cauterization of approximately 1/3 at 14 days-of-age (CAUT 14) and at 28 days-of-age (CAUT 28), moderately trimmed to approximately 1/3 beak at 14 days-of-age (MOD 14) and at 28 days-of-age (MOD 28), severely trimmed to 1/3-1/2 beak at 14 days-of-age (SEV 14) and at 28 days-of-age (SEV 28). Data were analyzed using Minitab®. The results indicated that beak trimming methods applied did not influence the performance and egg quality. Quails subjected to MOD 28 and SEV (14 and 28) presented lower feed conversion per egg mass compared to NT. However, MOD 14 and SEV were more efficient in preventing feather pecking behavior.
Influence of guava residue on tambaqui growth performance
Authors: Pereira Ubatã Corrêa , Matos Nataly Meira , Barros Romy Gleyse Chagas , Santana Priscila Monise Dos Santos , Almeida Anailton Carlos Alves de , Vieira Jodnes Sobreira , Bomfim Carolina Nunes Costa
Published: April 2022

Fruit residues represent alternative ingredients that can be included in diets of tambaqui, Colossoma macropomum. This study evaluated the growth performance of tambaqui fed diets containing different levels of guava agroindustrial residue. The experiment was based on a completely randomised design, with 105 fish randomly distributed in 15 plastic 60 L-1 boxes with a water recirculation system. Feeding was carried out to apparent satiety for 45 days, using diets with 0, 50, 100, 150 and 200 g kg-1 inclusion of guava residue. Biometrics were performed every 15 days. Quadratic effect (p < 0.05) was observed for daily feed intake and apparent feed conversion, with optimum levels of 4.86 and 6.05% inclusion of guava residue, respectively. There was no significant difference (p > 0.05) in relation to final weight, weight gain, specific growth rate, hepato-somatic index, survival rate and protein efficiency rate by the dietary treatments. The inclusion of up to 150 g kg-1 of the guava agroindustrial residue in the feed did not compromise the performance of tambaqui juveniles.
Energy and nutrient digestibility from mulberry (Morus alba) leaf meal for Nile tilapia
Authors: Dias Patrícia da Silva , Santos Hanna Karolyna dos , Balen Rafael Ernesto , Zadinelo Izabel Volkweis , Meurer Fábio
Published: April 2022

The aim of this study was to determine the apparent digestibility coefficients and digestible values of crude protein, ethereal extract, gross energy and dry matter of mulberry leaf meal (MLM) (Morus alba L.) as Nile tilapia (Oreochromis niloticus) feed. A total of 135 Nile tilapia juveniles were used, and the indirect methodology (Cr2O3) was applied for digestibility determinations. Mulberry leave meal presented good apparent digestible coefficients of protein, ethereal extract and energy with respective values of 0.94, 0.58 and 0.39. The mulberry leave meal thus comprises adequate digestible protein and digestible energy values, similar or better than other leafy foods, presenting potential for inclusion in Nile tilapia diets.
Effect of photoperiod on the biomass and survivorship of juvenile scorpions Jaguajir rochae (Scorpiones, Buthidae)
Authors: Lima José Rivaldo de , Silva Meykson Alexandre da , Martins René Duarte , Jorge Roberta Jeane Bezerra , Lira André Felipe de Araújo
Published: April 2022

Photoperiod is an important environmental characteristic involved in the regulation of circadian physiological processes in living organisms. This experiment verified the effect of photoperiod on biomass gain and mortality in juvenile scorpions of the species Jaguajir rochae (Borelli, 1910). We maintained the juvenile scorpions under two different photoperiod conditions; group A under a light and dark cycle (LD) 12L:12D (n = 36), and group B (n = 35) was subjected to a total dark cycle 0L:24D. Each juvenile was fed cockroaches twice a week and weighed every 15 days until 120th day. We analyzed the relationship between body mass and time, as well as the mortality between groups. Our results showed that group B had a lower biomass gain than that did group A, and no difference in mortality between the two groups was found. Since the locomotory activity of scorpions is associated with a decrease in luminosity, we suggest that group B had a lower gain in biomass due to a higher locomotor activity, resulting in greater energy expenditure. Though our data showed high mortality across both groups, it was not attributed to the photoperiod but to the high mortality rate of the scorpions of this genus during their initial instars and to them being R-strategist organisms. Thus, this study is important for understanding the relationship between photoperiod and biomass gain in invertebrates, especially in scorpions
Endoparasites of Hypostomus commersoni (Siluriformes, Loricariidae) from two shallow lagoons, Argentina
Authors: Rossi Liliana Mónica , Chemes Silvina Beatriz
Published: April 2022

Hypostomus commersoni is a freshwater fish, native to the Paraná River basin, which plays an important role in trophic networks of this system. This study aimed at analyzing the structure of the endohelminth community of H. commersoni from two shallow lagoons in the municipality of Santa Fe, Argentina. In the 51 hosts analyzed, 2103 helminths were found. Hosts from Belgrano Park lagoon were infested with Genarchella genarchella, Saccocoelioides nanii, Raphidascaris (Sprentascaris) sp., and Gorytocephalus elongorchi. Hosts from the Western Urban Nature Reserve lagoon were infested with Thometrema magnifica, Procamallanus (Procamallanus) annipetterae, Raphidascaris (Sprentascaris) sp., Gorytocephalus elongorchi, and Proteocephalidae spp. In both host populations, the prevalence of some parasites was high, and species richness and diversity of component communities were low. The distribution pattern of helminth was aggregated in all cases. No correlation was found between the length of the host and the richness and abundance of endoparasites. The total number of parasites and the specific richness per host in both lagoons did not differ significantly. The findings on G. genarchella, P. (P.) annipetterae, G. elongorchi, and Proteocephalidae spp. were the first records in his host
Ex situ conservation of the endangered “sempre-viva” species Comanthera mucugensis
Authors: Lima Andressa Priscila Piancó Santos , Lima-Brito Alone , Fernandes Gilênio Borges , Santana José Raniere Ferreira de
Published: April 2022

The “sempre-viva” species Comanthera mucugensis is endemic to the municipality of Mucugê, Bahia, Brazil, where it was widely exploited through extractivism to be commercialized as an ornamental, causing a drastic reduction of its population, so that it is now classified as endangered. Although its main area of occurrence is now protected for being within Chapada Diamantina National Park, the continued risks of inclement conditions and anthropic actions make it necessary to develop alternative methods for ex situ conservation of the species, such as in vitro conservation. Therefore, the objective of this study was to test the effect of different concentrations of salts and sucrose on the in vitro conservation of Comanthera mucugensis. Two salts concentrations of the medium MS (½ and ¼) and two sucrose levels (7.5 and 15.0 g L-1) were tested, and the experimental design was completely randomized with four treatments. After 365 days, the survival, growth and regeneration of the conserved plants were analyzed, achieving up to 100% survival, reduced shoot growth and maintenance of regenerative capacity. Reduction of the concentration of salts and sucrose in the culture medium is indicated to conserve the plants in vitro for a period of one year.
O teatro das paixões em Um copo de cólera, de Raduan Nassar
Authors: Pereira Cilene Margarete , Cavalcanti Luciano Marcos Dias
Published: April 2022

Um copo de cólera, narrativa de Raduan Nassar, foi publicada em 1978. A novela, como costuma ser caracterizada pela crítica, é organizada em sete capítulos, dos quais seis são curtíssimos (variando entre 3 e 5 páginas) e apenas um bastante grande (exatas 53 páginas), no qual se concentra o clímax da história. O capítulo seis, denominado ‘O esporro’, é o momento central da novela, no qual os protagonistas amantes rompem com a teatral tranquilidade nos capítulos pregressos, fazendo sugir discursos previamente construídos do ponto de vista cultural sobre as posições masculinas e femininas. Neste artigo, de cunho bibliográfico-analítico, objetivamos refletir sobre a construção dessas personagens, destacando seus discursos, papéis e as relações de poder estabelecidas entre elas. Há, na novela, uma disposição masculina ensaiada e moldada por certa orientação cultural que predispõe o homem como elemento racional, reafirmando a mulher como seu contrário. Nassar explora as oposições e os estereótipos associados às personagens, condicionadas, a princípio, a papéis dotados de uma previsibilidade desconcertante, dada a teatralidade gestual. A organização textual da narrativa aponta para o embate de gêneros, e também para a inversão de poderes e posições entre homem e mulher, sugerindo, em seu último capítulo, uma espécie de derrota emocional masculina diante da racionalidade do discurso feminino
O projeto de ensino Sarau Literário, no Instituto Federal Farroupilha Campus São Vicente do Sul: uma reflexão sobre o evento em tempos de pandemia
Authors: Limas Rosimeire Simões de , Buchweitz Marlise , Jost Itagiane
Published: April 2022

O presente texto visa a trazer ao conhecimento do público o projeto de ensino intitulado Sarau Literário, evento promovido no Instituto Federal Farroupilha Campus São Vicente do Sul, por servidores docentes da área de Linguagens, com a colaboração de técnicos administrativos em educação. Além disso, faz-se uma reflexão sobre a mudança de formato que se precisou adotar a partir da nova realidade que se vive, desde março de 2020, com a pandemia do covid-19, passando de atividade presencial para remota. Neste sentido, apresenta-se a trajetória do evento e seus desdobramentos, bem como se destaca a importância de um projeto deste porte para a disseminação dos saberes dos estudantes e de sua formação enquanto sujeitos que interferem no contexto em que vivem e, através da arte, reinventam as múltiplas formas de vivências na instituição. Cita-se, em especial, a sétima edição, ocorrida em 2020, no formato de live, e o Sarau Multicampi, evento criado a partir do êxito do Sarau Literário e apresentado em uma semana de formação pedagógica. O evento tornou-se reconhecido como prática exitosa no Instituto e permite que cada um dos estudantes envolvidos se mostre e dê voz a suas inquietações, através da arte, da música, da literatura ou de outra forma artístico-visual
Entrevista com José Eduardo Agualusa: A literatura quebrando muros
Authors: Silva Luís Cláudio Ferreira , Teles Marco Antonio Hruschka
Published: April 2022

José Eduardo Agualusa nasceu em Huambo, Angola, em 1960. Estudou Silvicultura e Agronomia em Lisboa, Portugal. Escreve crônicas para o jornal brasileiro O Globo. É membro da União dos Escritores Angolanos. Seus livros já foram traduzidos para mais de 30 idiomas. Pelo selo Tusquets da Editora Planeta do Brasil, publicou O terrorista elegante e outras histórias (2019), livro escrito a quatro mãos com Mia Couto, de quem é amigo. Publicou também A sociedade dos sonhadores involuntários (2017) e O vendedor de passados (2018), romance pelo qual venceu o Independent Foreign Fiction Awards. Seu último romance publicado é Os vivos e os outros, de 2020. A entrevista que segue é parte de uma mesa na 7ª Festa Literária Internacional de Maringá (FLIM), realizada de maneira virtual, no dia 11 de dezembro de 2020.
Thickness Influence of the Copper Powder Sintered Capillary Structure in the Thermal Performance of Heat Pipes
Authors: Krambeck Larissa , Bartmeyer Guilherme Antonio , Souza Diógenes Oliveira de , Fusão Davi , Santos Paulo Henrique Dias dos , Alves Thiago Antonini
Published: April 2022

A selection of capillary structure of sintered copper powder for heat pipes based on the experimental thermal performance was conducted. Due to the geometric characteristics, the manufactured heat pipes can be used in electronics cooling. The heat pipes are used to enhance the heat transfer and are based on phase change. The sintered metal powder structures have a high capillary pumping, low pores, and good thermal conductivity. The heat pipes were manufactured from a straight copper pipe with an external diameter of 9.45mm, an inner diameter of 7.75mm, and a length of 200mm. The capillary structure was made of sintered copper powder with three different thicknesses (2.125mm, 1.500mm, and 0.875mm). Distilled water was used as the working fluid. Each thickness was analyzed with four different filling ratios related to the evaporator volume: 60, 80, 100, and 120%. The condenser was cooled by forced convection of air, the adiabatic section was insulated, and the evaporator was heated by an electrical resistor and was insulated from the environment with aeronautic insulation. The heat pipes were tested horizontally under different low heat loads (from 5 up to 45W). The experimental results showed that all sintered heat pipes worked satisfactorily. However, Type #3 Heat Pipe with a filling ratio of 100% showed the best thermal performance.
LECT2 Is a Novel Antibacterial Protein in Vertebrates
Authors: Hu Ya-Zhen , Ma Zi-You , Wu Chang-Song , Wang Jie , Zhang Yong-An , Zhang Xu-Jie
Published: April 2022

In vertebrates, leukocyte-derived chemotaxin-2 (LECT2) is an important immunoregulator with conserved chemotactic and phagocytosis-stimulating activities to leukocytes during bacterial infection. However, whether LECT2 possesses direct antibacterial activity remains unknown. In this article, we show that, unlike tetrapods with a single LECT2 gene, two LECT2 genes exist in teleost fish, named LECT2-a and LECT2-b. Using grass carp as a research model, we found that the expression pattern of grass carp LECT2-a (gcLECT2-a) is more similar to that of LECT2 in tetrapods, while gcLECT2-b has evolved to be highly expressed in mucosal immune organs, including the intestine and skin. Interestingly, we found that gcLECT2-b, with conserved chemotactic and phagocytosis-stimulating activities, can also kill Gram-negative and Gram-positive bacteria directly in a membrane-dependent and a non–membrane-dependent manner, respectively. Moreover, gcLECT2-b could prevent the adherence of bacteria to epithelial cells through agglutination by targeting peptidoglycan and lipoteichoic acid. Further study revealed that gcLECT2-b can protect grass carp from Aeromonas hydrophila infection in vivo, because it significantly reduces intestinal necrosis and tissue bacterial load. More importantly, we found that LECT2 from representative tetrapods, except human, also possesses direct antibacterial activities, indicating that the direct antibacterial property of LECT2 is generally conserved in vertebrates. Taken together, to our knowledge, our study discovered a novel function of LECT2 in the antibacterial immunity of vertebrates, especially teleost fish, greatly enhancing our knowledge of this important molecule.
Multi-temporal geomorphometric analysis to assess soil erosion under different tillage practices: A methodological case study
Authors: Cucchiaro Sara , Carretta Laura , Nasta Paolo , Cazorzi Federico , Masin Roberta , Romano Nunzio , Tarolli Paolo
Published: April 2022

Soil erosion is one of the main environmental threats to sustainability and crop productivity in the agricultural sector. In agricultural fields, no-till management is considered a key approach for mitigating soil erosion. The measurement of soil erosion is particularly challenging, especially when surficial morphological changes are relatively small. Conventional experiments are commonly time-consuming and labour-intensive in terms of both field surveys and laboratory methods. On the other hand, the structure from motion (SfM) photogrammetry technique has enhanced the experimental activities by enabling the temporal evolution of soil erosion to be assessed through detailed micro-topography. This work presents a multitemporal quantification of soil erosion, using SfM through uncrewed aerial vehicles (UAV) survey for understanding the evolution of no-till (NT) and conventional tillage (CT) in experimental plots. Considering that morphological changes at the plot scale had millimetre orders of magnitude, it was necessary to minimise SfM errors (e.g., co-registration and interpolation) in volumetric estimates to reduce noise as much as possible. Therefore, a methodological workflow was developed to analyse and identify the effectiveness of multi-temporal SfMderived products, e.g., the conventional difference of digital terrain models (DoDs) and the less used differences of meshes (DoMs), for soil volume computations. We validated the erosion volumetric changes calculated from the SfM outputs with the amount of soil directly collected through conventional runoff and sediment measurements in the field. In this way, we recognised the most suitable estimation method. This study presents a novel approach for using DoMs instead of DoDs to describe the microtopography changes and sediment dynamics accurately. Another key and innovative aspect of this work often overlooked in soil erosion studies, was identifying the contributing sediment surface by delineating the channels potentially routing runoff directly to water collectors. The sediment paths and connected areas inside the plots were identified using a multi-temporal analysis of the sediment connectivity index for achieving the volumetric estimates, using DoMs (e.g., 2213 cm3 for no-till management system - NT and 38155 cm3 for conventional tillage regime - CT during September 2018-June 2020) that showed mild overestimation respect to field measurements results (e.g., 2359 cm3 for NT and 4525 cm3 for CT in the same period). This difference was attributable to other factors (e.g., the soil compaction processes) or variables rather than to photogrammetric or geometric ones. The developed workflow enabled low cos quantification of soil erosion dynamics for assessing the mitigation effects of no-till management that can also be extended in the future to different scales, based on SfM and UAV technologies.