bluuebunny/crossref_metadata_2025 huggingface dataset:
Prediction of post-partum depression and anxiety based on clinical interviews and symptom self-reports of depression and anxiety during pregnancy
Authors: Wilkie E. , Gillet V. , Talati A. , Posner J. , Takser L.
Published: September 2022

Introduction

The tools used to evaluate mental health during pregnancy matter. Their efficacy in identifying symptom severity enables better predictions of postpartum mental health. The Mother & Youth: Research on Neurodevelopment & behaviour (MYRNA) cohort is an NIH funded longitudinal cohort from Sherbrooke, Canada studying the effects of pregnant women’s mental health.

Objectives

We examine which mental health tools will better gauge depression and anxiety during pregnancy based on predicting postpartum outcomes. Our hypothesis is that an approach combining a clinical interview with self-report questionnaires may predict mental health in postpartum women.

Methods

Participants’ mental health is evaluated by the SCID-5-RV, a lifetime interview administered at 30 weeks and monthly questionnaires including PHQ-9 and GAD-7. Participants are in the depression/anxiety group if they either pass all the criteria in the SCID during pregnancy or have an average PHQ-9 or GAD-7 score greater than 7. The Edinburgh Postnatal Depression Scale (EPDS) and the Perceived Stress Scale (PSS) are the outcome variables.

Results

PHQ-9 was correlated with EPDS, r(220)= .38, p< .01, and GAD-7 was correlated with PSS, r(213)= .56, p< .01. SCID results only had a significant effect on PSS,
F(3,220)= 3.77, p= .01 and not with EPDS,
F(3,219)= 1.08, p= .36. When the self-report measures and interview were combined significant effects were seen for both the EPDS,
F(1,222)= 18.71, p< .01 and the PSS,
F(1,223)= 34.94, p<.01.

Conclusions

Preliminary results show significant associations between measures administered during pregnancy and postpartum measures. Prediction models based on classification will be analyzed once more data is collected.

Disclosure

No significant relationships.
Efficacy of Synchronous Remote-Based Interventions for Suicide Prevention among Adolescent and Adult Patients: A Systematic Review and Meta-Analysis
Authors: Comendador Vázquez L. , Cebrià Meca A. , Sanz Ruíz A. , Jiménez-Villamizar M.P. , Sanabria-Mazo J.P. , Mateo Canedo C. , Palao Vidal D.
Published: September 2022

Introduction

Suicide is a universal, complex, and multifaceted public health problem that is among the leading causes of preventable death worldwide. The impact of suicide affects families, communities, and societies; hence its prevention is an emerging priority for public health systems.

Objectives

The current systematic review aims to investigate the efficacy of distance suicide prevention strategies implemented through synchronous technology-based interventions (i.e., any digital tool that allows interactive and immediate real-time communication conducted remotely).

Methods

The bibliographic search has been carried out in the electronic databases MEDLINE/PubMed, PsycInfo, Scopus, and Web of Science, with no restrictions on the publication period and limited to publications in English or Spanish. Two reviewers independently will conduct screenings, data extraction, risk of bias (RoB), and methodological quality assessment.

Results

The preliminary data searches seem to support the effectiveness of providing active contact to persons who have made a suicide attempt and indicate that receiving early specialized assistance decreases the relative risk of recurrence. The reduction would be attributable to improved detection of patients at increased risk and effective referral to emergency services.

Conclusions

Telematics suicide prevention has been an emergent field for years, facilitated by the notably increased in acceptance and availability. Considering that distance programmes can reach affected individuals regardless of their location, it stands to reason that these interventions will be part of future suicide prevention efforts. The results will be discussed regarding (a) the effect size of the intervention outcomes and (b) the main moderators of the effectiveness found.

Disclosure

No significant relationships.
Perceived Stress Among Students of Private and Public Sector Medical Colleges of Pakistan: A Cross Sectional Study
Authors: Fatima M. , Mehdi Z. , Saeed S. , Nisar A. , Zain M. , Binte Shakir J. , Aamer I. , Arain F. , Jawad M. , Aziz N.
Published: September 2022

Introduction

Medical-education is associated with high overall stress and it is important to identify relevant factors.

Objectives

The study was aimed to discern the differences in perceived stress among the students of public and private medical colleges of Pakistan and to identify factors subservient to any hypothesized difference.

Methods

This cross-sectional study was conducted at different private and public medical colleges of Pakistan using validated tools: PSS-14 (Perceived Stress Scale) to find out the levels of stress faced by each sector and MSSQ (Medical Student Stressor Questionnaire) to determine the factors associated with increased stress.

Results

Total of 424 medical students from various public and private medical colleges of Pakistan (212 each) filled the questionnaires. The mean score +/- SD of PSS-14 was 36.17 ± 6.096 for the public sector and 36.29 ±5.732 for the private sector. Hence, there was no difference between the two comparative means of PSS score, t(422)=-0.213,p=0.831.The results for both sectors were classified as high perceived stress (27-40 score is high perceived stress). Out of 40 individual stress-causing factors in MSSQ, the students from private-sector scored higher as compared to public-sector: Quota System in examination t(422)=-3.951,p=0.000, stress caused by lack of time for friends and family t(422)=-3.225,p=0.001, stress caused by Tests/Examination t(422)=-2.131,p=0.034, stress caused by the parental wish for them to study medicine t(422)=-2.346,p=0.019 and stress caused by fear of getting poor marks t(422)=-2.183,p=0.030.

Conclusions

There exists no overall difference in the perceived-stress among the medical students of public and private medical colleges despite private-sectors having significantly more operational financial resources.

Disclosure

No significant relationships.
Secondary Traumatic Stress and Vicarious Posttraumatic Growth among nurses during three COVID-19 lockdowns in Greece
Authors: Kalaitzaki A. , Tsouvelas G. , Tamiolaki A. , Theodoratou M. , Konstantakopoulos G.
Published: September 2022

Introduction

Since the onset of the pandemic, nurses have been repeatedly exposed to their patients’ COVID-19-related traumatic experiences. Therefore, they are at high risk for Secondary Traumatic Stress (STS), the stress syndrome resulting from helping others who are suffering. Positive psychological outcomes following this vicarious exposure are also likely. Vicarious posttraumatic growth (VPTG) refers to the positive changes from working with patients who themselves have coped with traumatic experiences.

Objectives

This study aims to examine STS and VPTG among 429 nurses during three lockdowns of the COVID-19 pandemic in Greece.

Methods

A repeated cross-sectional survey with a convenience and snowball sampling procedure was conducted. The Secondary Traumatic Stress Scale (STSS), the Post-Traumatic Growth Inventory (PTGI), the Brief Resilience Scale, and the Brief Cope (BC) were used to measure STS, VPTG, resilience, and coping strategies, respectively.

Results

Nurses in Greece demonstrated high levels of STS at the first lockdown, significantly lower in the second one, which raised again -but not significantly- in the third lockdown. Resilience significantly decreased, whereas VPTG significantly increased across the three lockdowns. Following the escalation of the pandemic nurses in general used significantly more adaptive and less maladaptive coping strategies to deal with the crisis.

Conclusions

Further research is needed to clarify the longitudinal course of the negative and positive psychological effects of the pandemic on healthcare staff. Conclusions can guide the development of interventions to safeguard nurses from the deleterious impacts of the COVID-19 and support them in their process of growth.

Disclosure

No significant relationships.
Suicidality in University Students Throughout the COVID-19 Pandemic
Authors: Vigo D.
Published: September 2022

Introduction

The COVID-19 pandemic has greatly disrupted the day-to-day life of university students, as it has for the general population. University students have been reported to have high rates of mental health concerns, including suicidal ideation.

Objectives

Ascertaining the correlation of Covid-19 dissemination and proximity to University students in Vancouver, Canada, with suicidal ideation and suicidal plan.

Methods

We analyuzed weekly cross-sectional data from our Canadian World Mental Health International College Student survey by plotting the 30-day suicide ideation as a binary and the ordered 30-day suicide ideation outcomes using logistic and ordered generalized additive model (GAM) respectively, with a cubic spline and adjusting for demographics. We also ran an analysis on the association between binary 30-day ideation and different sample characteristics using logistic regression.

Results

The time trend analysis showed that suicidal ideation did not seem to increase during the COVID-19 pandemic. On the contrary, ideation levels were found to be high in the beginning (February 2020) with a downwards trend through June to September before gradually increasing around November, 2020. We identified sociodemographic risk factors that may be associated with suicidal ideation, and established that those most at risk were students who had been emotionally overwhelmed by Covid-19 and unable to find help.

Conclusions

Our results seem to indicate that, in general, students have remained resilient under the stress factors presented by the pandemic, and that trends in suicidality seem to follow seasonal or school calendar year stressors rather than respond to the pandemic. However, certain subpopulations appear to be more affected than others.

Disclosure

No significant relationships.
The Use of Ceramides to Predict Metabolic Response to Metformin in Women With PCOS
Authors: Sharma Anu , Krick Benjamin , Li Ying , Summers Scott A , Playdon Mary C , Welt Corrine
Published: September 2022

Context

Polycystic ovarian syndrome (PCOS) is a complex disorder in which metabolic abnormalities are associated with reproductive dysfunction. Women with PCOS have increased ceramide concentrations. Previous studies demonstrated that treating metabolic abnormalities of PCOS with metformin improved glucose effectiveness after 12 weeks.

Objective

We evaluated whether, in women with PCOS, lower baseline ceramide, diacylglycerol (DAG), and triacylglycerol (TAG) concentrations were associated with improved metabolic response to metformin.

Methods

Women (n = 29), aged 29 ± 5 years and diagnosed with PCOS by the NIH criteria underwent an intravenous glucose tolerance test (IVGTT) before and after 12-week treatment with metformin (1500 mg per day). Metabolic responders were defined by improved glucose effectiveness, specifically, the ability of glucose to stimulate uptake and suppress production, after metformin treatment.

Results

Twelve weeks of metformin resulted in weight loss (−1.7 ± 2.6 kg, P < 0.01) and a reduction in BMI (−0.6 ± 0.9 kg/m2, P < 0.01) with no change in HbA1c. The concentrations of Cer(d18:1/22:0), Cer(d18:1/24:0), total ceramides, total Cer(d16:0), total Cer(d18:2), DAG, dihydrosphingomyelin (DHSM), and TAG decreased after metformin treatment (P < 0.05). Baseline total Cer(d16:0) concentration <204.1 pmol/mL was 82% sensitive (AUC 0.72, P = 0.03) and total DHSM concentration <32237 pmol/mL was 100% specific (AUC 0.73, P = 0.03) in predicting improved metabolic response to metformin, as measured by IVGTT.

Conclusion

Lower total Cer(16:0) and DHSM concentrations are associated with a beneficial metabolic response to metformin in women with PCOS. Based on the known association between higher ceramide levels and type 2 diabetes, the data suggest that metformin improves metabolic parameters in women with mild metabolic derangements.
Nationwide Readmission Rates and Hospital Charges for Patients With Surgical Evacuation of Nontraumatic Subdural Hematomas: Part 2—Burr Hole Craniostomy
Authors: Shaftel Kelly A. , Jubran Jubran H. , Cole Tyler S. , Little Andrew S.
Published: September 2022

BACKGROUND:

Nontraumatic subdural hematoma (SDH) is a common neurological disease that causes extensive morbidity and mortality. Craniotomy or burr hole craniostomy (BHC) is indicated for symptomatic lesions, but both are associated with high recurrence rates. Although extensive research exists on postoperative complications after BHCs, few studies have examined the underlying causes and predictors of unplanned 30-day hospital readmissions at the national level.

OBJECTIVE:

To compare causes for hospital readmission within 30 days after surgical SDH evacuation with BHC and evaluate readmission rates and independent predictors of readmission.

METHODS:

This retrospective cohort observational study was designed using the Nationwide Readmissions Database. We identified patients who had undergone BHC for SDH evacuation (2010-2015). National estimates and variances within the cohort were calculated after stratifying, hospital clustering, and weighting variables.

RESULTS:

We analyzed 2753 patients who had BHC for SDH evacuation: 675 (24.5%) had at least one 30-day readmission. Annual readmission rates did not vary across the study period (P = .60). The most common cause of readmission was recurrent SDH (n = 630, 93.3%), and the next most common was postoperative infection (n = 12, 1.8%). Comorbidities significantly associated with readmission included fluid and electrolyte disorders, chronic blood loss anemia, chronic obstructive pulmonary disease, depression, liver disease, and psychosis (P ≤ .04), but statistically significant independent predictors for readmission included only chronic obstructive pulmonary disease and fluid and electrolyte disorders (P ≤ .007).

CONCLUSION:

These national trends in 30-day readmission rates after nontraumatic SDH evacuation by BHC not otherwise published provide quality benchmarks that can aid national quality improvement efforts.
Young transposable elements rewired gene regulatory networks in human and chimpanzee hippocampal intermediate progenitors
Authors: Patoori Sruti , Barnada Samantha M. , Large Christopher , Murray John I. , Trizzino Marco
Published: September 2022

The hippocampus is associated with essential brain functions, such as learning and memory. Human hippocampal volume is significantly greater than expected compared with that of non-human apes, suggesting a recent expansion. Intermediate progenitors, which are able to undergo multiple rounds of proliferative division before a final neurogenic division, may have played a role in evolutionary hippocampal expansion. To investigate the evolution of gene regulatory networks underpinning hippocampal neurogenesis in apes, we leveraged the differentiation of human and chimpanzee induced pluripotent stem cells into TBR2 (or EOMES)-positive hippocampal intermediate progenitor cells (hpIPCs). We found that the gene networks active in hpIPCs are significantly different between humans and chimpanzees, with ∼2500 genes being differentially expressed. We demonstrate that species-specific transposon-derived enhancers contribute to these transcriptomic differences. Young transposons, predominantly endogenous retroviruses and SINE-Vntr-Alus (SVAs), were co-opted as enhancers in a species-specific manner. Human-specific SVAs provided substrates for thousands of novel TBR2-binding sites, and CRISPR-mediated repression of these SVAs attenuated the expression of ∼25% of the genes that are upregulated in human intermediate progenitors relative to the same cell population in the chimpanzee.
Trim33 conditions the lifespan of primitive macrophages and onset of definitive macrophage production
Authors: Lou Demy Doris , Touret Anne-Lou , Lancino Mylène , Tauzin Muriel , Capuana Lavinia , Pierre Constance , Herbomel Philippe
Published: September 2022

Trim33 (Tif1γ) is a transcriptional regulator that is notably involved in several aspects of hematopoiesis. It is essential for the production of erythrocytes in zebrafish, and for the proper functioning and aging of hematopoietic stem and progenitor cells (HSPCs) in mice. Here, we have found that, in zebrafish development, Trim33 is essential cell-autonomously for the lifespan of the yolk sac-derived primitive macrophages, as well as for the initial production of definitive (HSPC-derived) macrophages in the first niche of definitive hematopoiesis, the caudal hematopoietic tissue. Moreover, Trim33 deficiency leads to an excess production of definitive neutrophils and thrombocytes. Our data indicate that Trim33 radically conditions the differentiation output of aorta-derived HSPCs in all four erythro-myeloid cell types, in a niche-specific manner.
The state of knowledge regarding pertussis amongst young adults
Authors: Borowski Bartosz , Kupisz Zuzanna , Długosz Patrycja , Kozioł Małgorzata
Published: September 2022

Pertussis remains a serious health problem to this day. Even though a successful vaccine campaign reduced the morbidity rate in most countries, it still is a present and concerning disease. The sickness is especially dangerous to infants and young children, as it may result in serious health complications, and even death. The aim of this study was to determine how much do young adults know about this condition, and how often does pertussis occur within this population, as well as within its family members. Materials and methods: data was collected with use of an authorial survey, which was handed around a group of 201 freshmen medical students in contact, in April 2022. Results: Most of the students possess basic knowledge regarding aetiology, routes of transmission and symptoms of pertussis, but lack information about the vaccines, treatment, course of the disease and specific at-risk groups. Some students were diagnosed with the condition in the past, and some have a family member diagnosed with it sometime. Conclusion: Young adults have basic knowledge regarding pertussis, but they should be educated about some aspects of this sickness, with use of social campaigns or advertisements. Only some of the people are affected by pertussis during their life, as the disease is relatively rare in developed countries. A possibility of getting a booster shot of pertussis vaccine should be touted.
Influence of physical activity, diet, psychic stress and other diseases on psoriaris
Authors: Spozowski Karol , Powroźniak Ewelina , Raksa Karolina , Czarkowski Marcin , Oleksa Paulina
Published: September 2022

Introduction and objective: Psoriasis is a chronic inflammatory skin disease characterized by improperly differentiating epidermal keratinocytes. It may be associated with many coexisting diseases, mainly of the digestive, circulatory and autoimmune systems.

Materials and methods: Pubmed database was searched. The criteria for qualifying the articl for the review were the following keywords: psoriasis, diet, sport, exercises, stress. 20 articles from 2017 to 2022 were analyzed.

Description of the state of knowledge: Psoriasis has many links with metabolism, which depends on diet, exercise, and other diseases in the body. The excessive amount of pro-inflammatory substances can be regulated by supplying the body with anti-inflammatory ingredients in the diet as well as by physical activity that reduces the level of visceral fat. Many other diseases related to, inter alia, inflammation of the intestines or the state of the intestinal microbiota also affect the systemic distribution of cytokines and adipokines. An important factor influencing health is also mental stress and even epigenetic factors.

Summary: Increased physical activity helps fight the main consequences of psoriasis. A similar effect is demonstrated by a low-calorie diet with a high content of anti-inflammatory ingredients and antioxidants and avoidance of pro-inflammatory substances. Treating other comorbidities and maintaining a low level of mental stress also have a positive effect on patients with psoriasis. All of the above interventions are effective complementary to pharmacological therapy.
Shinrin-yoku and its role in hypertension therapy
Authors: Rybak Natalia , Czarnota Jakub , Dobrzyński Michał , Skubel Tomasz
Published: September 2022

Objective: This study aimed to evaluate the potential role of Shinrin-yoku (forest bathing) in the therapy of hypertension.  
 
Methods and materials: A literature search was conducted in the PubMed MEADLINE
database of medical publications using the following keywords: Shinrin-yoku, forest bathing, hypertension, phytoncides
 
Results: Hypertension is a serious problem in the Polish population. The data from the National Health Fund show that in 2020 almost 10 million adult Poles were affected by this disease, and over 14% of the entire pharmacy reimbursement budget was used to reimburse drugs for hypertension.
Primary arterial hypertension is caused by a mixture of environmental and genetic factors, including obesity, mental stress, low physical activity, and excessive sodium intake. Although hypertension is usually asymptomatic, it contributes to serious complications such as left ventricular hypertrophy, impaired renal function, changes in the vessels of the retina, and finally to stroke or aortic dissection.
The Shinrin-yoku (forest bathing) is becoming a worldwide recognized method used in preventative medicine and can play a substantial role in decreasing the number of patients suffering from hypertension.
 
Conclusion: Shinrin-yoku (forest bathing) lowers blood pressure, heart rate, and the level of stress hormones, and therefore can be a prophylactic element in preventing the development of hypertension or an element of non-pharmacological therapy for this disease entity. Additionally, it has a positive effect on the immune system.
Revenue Management Under a Mixture of Independent Demand and Multinomial Logit Models
Authors: Cao Yufeng , Rusmevichientong Paat , Topaloglu Huseyin
Published: September 2022

Discrete choice models have recently attracted significant attention to model demand in revenue-management applications, as they can capture the fact that if a product is unavailable, then some customers substitute for this product, whereas others leave the system without a purchase. Although a more sophisticated choice model may capture the choice process of the customers more faithfully, a simpler choice model may result in tractable optimization problems when finding the optimal assortment of products to offer or prices to charge. One approach for coming up with sophisticated choice models is to mix existing ones, where the different segments of customers choose under the different choice models in the mixture. In “Revenue Management Under a Mixture of Independent Demand and Multinomial Logit Models,” Cao, Rusmevichientong, and Topaloglu demonstrate that mixing the independent demand and multinomial logit models can significantly increase the modeling flexibility of each of these choice models, while keeping the corresponding operational assortment optimization problems tractable.
Thermodynamic Properties of Binary Liquid Mixtures of Furfural with Toluene and Nitro Benzene at Varying Temperatures
Authors: Uthirapathi Revathi , Krishnamoorthy Uma Sivakami , Ambrose Rose Venis
Published: September 2022

Binary liquid mixtures of furfural with toluene and nitrobenzene were examined for ultrasonic velocity, viscosity and density at a temperature of 308.15 and 318.15 K in various mole fractions. The calculated thermodynamic properties from density, viscosity, ultrasonic velocity and some excess parameters like Excess Volume(VE), Deviation in Isentropic Compressibility(∆KS), Deviation in Viscosity(∆η), Deviation in Intermolecular Free Length(∆LF), Deviation in Intermolecular Free Volume(∆VF) and Deviation in Acoustic Impedance(∆Z) were determined and found the proper coefficients for a polynomial equation of the Redlich - Kister type, from which the theoretical values were calculated. The interaction ability of the binary liquid mixtures was investigated, as well as the deviations of the binary liquid mixtures from their ideal behavior were studied based on the experiment and theoretical values.
Synthesis, Structural Elucidation, Spectral Studies and Antimicrobial Activity of Pyrano-Pyrazole Derivatives
Authors: Vyas Sandip , Parmar Ketan , Patel Bhavesh , Chaudhari Mukesh , Umrigar Nikita , Goswami Kalpesh
Published: September 2022

The emergence of multidrug-resistant pathogens have posed a major challenge to the treatment strategies for infectious diseases. In this study, a panel of eight novel pyrano-pyrazole heterocyclic moiety were prepared by multi-component one-pot reactions. In the first step Pyrano-pyrazole moiety prepared by single pot multicomponent condensation of Ethyl 3-oxobutanoate, pyridine-4-carbohydrazide, Propanedinitrile, and substituted benzaldehydes. In the second step above synthesized pyrano- pyrazole derivative react with different substituted phenyl amino-acetyl chloride derivative to give final compound. All the compounds were obtained in reasonable yields bearing their characteristic structure as inferred from the spectral analysis. All the synthesized compounds were screened for antimicrobial activity. Product B-1, B-5 and B-8 is found to have remarkable antibacterial activity. Products B-4 and B-7 are moderately active and compound B-5 and B-6 are found to have remarkable Antifungal activity.
Synthesis and Characterization of Corn Starch Grafted Guar Gum Composite with Tamarind Kernel Powder
Authors: Bhati Surbhi , Loonker Sangeeta
Published: September 2022

In this work, a composite of corn starch grafted (-g-) guar gum was synthesized by a polymerization process using tamarind kernel powder as a polysaccharide. Firstly, grafting was done with corn starch and saponification with alkali, i.e., sodium hydroxide (NaOH). It was further derivatized with tamarind kernel powder through a condensation process and was thermally treated at different temperatures. This leads to some chemical and structural changes in the compound. The characteristics of this composite were studied by 1H NMR (Nuclear Magnetic Resonance), which showed the protonic environment found in the CS-g-GG TKP composite. The FT-IR (Fourier transform infrared spectrum) showed the presence of different functional groups found in the CS-g-GG TKP composite. Scanning electron microscopy (SEM) showed the surface morphology of the composite. Mass spectra showed the molecular weight of the newly synthesized composite.
DYNAMICS OF KNOWLEDGE FLOWS: GEOGRAPHICAL PROXIMITY, VERTICAL RELATIONS AND LEARNING BY INTERACTION
Authors: Ruffoni Janaina , Suzigan Wilson , Tatsch Ana Lucia
Published: September 2022

O objetio do artigo é compreender as fontes de conhecimento e os processos de aprendizagem que sustentam as inovações das firmas localizadas em Sistemas Locais de Produção (SLP). A principal contribuição é empírica. Foram pesquisados dois SLP do segmento de máquinas para calçados no final dos anos 2000, período em que já era observado o processo de mudança concorrencial com a entrada de empresas chinesas como concorrentes diretas das firmas analisadas. Adotou-se a lógica de que a geração da inovação é influenciada pelo  aprendizado e pela interação da firma. A pesquisa de campo foi realizada com questionário estruturado e com entrevistas in loco, tanto na Itália quanto no Brasil. Em termos de resultados, destacam-se que: as relações verticais são mais frequentes quando comparadas às horizontais; o aprendizado por interação explica a geração de inovação; e a proximidade geográfica é importante para explicar as redes de conhecimento. Os resultados são consistentes com o padrão setorial identificado como fornecedor especializado.
DESENVOLVIMENTO, ECONOMIA E TURISMO: Diálogos entre o Sul de Minas Gerais (Brasil) e o Minho (Portugal)
Authors: Pimenta Carlos Alberto Máximo , Remoaldo Paula Cristina , Ribeiro José Cadima , Pereira Samanta Borges
Published: September 2022

O objetivo desta pesquisa foi identificar aproximações entre a microrregião de Itajubá (BR) e o Distrito de Braga (PT) no âmbito do desenvolvimento econômico, social e sustentável, a partir da Economia da Cultura e do Turismo Criativo. A produção dos dados foi realizada em duas frentes: bases censitárias do Instituto Nacional de Estatística (INE) e Fundação Francisco Manuel dos Santos (PorData.pt), Portugal, e Instituto Brasileiro de Geografia e Estatística (IBGE) e entrevistas com gestores públicos responsáveis pelo desenvolvimento da cultura e do turismo dos municípios envolvidos. A pesquisa de campo evidenciou os distanciamentos entre o instituído e o praticado, o que não inibe exemplos promissores do protagonismo político da comunidade à frente desses processos. Em ambos, se faz importante superar: baixa participação da comunidade; práticas individualizantes; verticalização das iniciativas de desenvolvimento; organização empresarial dos movimentos sociais de geração de renda e emprego.
IMPACTOS DA COVID-19 NA RELAÇÃO ENTRE VENDEDORES E COMPRADORES DE PRODUTOS AGROALIMENTARES: Um olhar a partir da economia de custos de mensuração
Authors: Meira Caunetto Mariela , Ferreira Guimarães Amanda , De Souza José Paulo , De Alencar Schiavi Sandra Mara
Published: September 2022

Face às mudanças provocadas pela COVID-19, observam-se problemas relacionados à assimetria de informação na relação entre compradores e vendedores de produtos agroalimentares. Neste estudo, através de uma discussão bibliográfica, buscou-se compreender como as mudanças causadas pela COVID-19 na distribuição de alimentos podem impactar na relação entre compradores e vendedores de produtos agroalimentares, em especial frutas, legumes e verduras. Observou-se que as restrições na distribuição em supermercados, feiras livres e mercado online dificultam ou impedem a mensuração da qualidade dos produtos por parte dos compradores. Nesse contexto, os compradores têm a sua avaliação limitada a informações que o vendedor passa acerca dos atributos de qualidade, podendo implicar em problemas de apropriação de valor. Conclui-se que as mudanças na distribuição de produtos agroalimentares, ainda que garantam o acesso aos suprimentos, trazem riscos à relação entre compradores e vendedores quando se consideram assimetria de informação e seleção adversa.
Sampling density to detect spatial dependence of potassium, calcium and magnesium in sandy soils
Authors: Batista Jessé Alves , Oliveira Felippe Augusto Santos , Folador Mauricio Eduardo Silva , Ruiz Junior Javier Zeballos , Batista Gustavo Barbosa de Moura , Silva Tatiane Carla , Montanari Rafael
Published: September 2022

The sampling grid density for georeferenced soil collection must be large enough to allow the identification of the spatial dependence of attributes with representative accuracy of the cultivated area, but not large enough to make fertility mapping unfeasible. The objective of this study was to define, from the evaluation of geostatistical parameters obtained from a super dense soil sampling, an efficient grid for detecting the spatial dependence of potassium (K+), calcium (Ca2+), and magnesium (Mg2+) in a sandy soil. The experiment was conducted in a 3.2 hectare annatto crop (Bixa orellana L.), in 2017. The geostatistical grid consisted of 31 points per hectare, totaling 101 georeferenced points in an 18x18 m spacing. Soil was sampled at the depths of 0-0.20 m and 0.20-0.40 m. A strong spatial dependence was found for all soil attributes in both depths, while the semivariograms fitted to the spherical model with good coefficients of determination (R²) indicating a spatial correlation between the attributes. The range of spatial dependence was close to 100 m for all attributes in both layers. In sandy soils, an efficient sampling grid to detect the spatial dependence of K+, Ca2+ and Mg2+ must consider a semivariogram range of approximately 100 meters.
Metallothionein levels on the gill and liver of Mystus nigriceps (Valenciennes, 1840) in Welang River, Pasuruan City, East Java
Authors: Wardani Lisma , Herawati Endang Yuli , Surya Asus Maizar
Published: September 2022

This research was conducted in October 2021 using a survey method. Sampling was carried out three times with a span of every 2 weeks at 3 stations along the lower reaches of the Welang River Pasuruan Regency. Parameters observed included cadmium metal content in fish gills and liver, metallothionein levels in gills, and liver of M. nigriceps. Fish and the relationship between cadmium metal and metallothionein levels in the gills and liver of M. nigriceps in the Welang River. The average yield of cadmium metal content in the gills of M. nigriceps is 5.943-8.103 mg/l. Meanwhile, the average result of heavy metal content in the liver of  M. nigriceps is 6.397-9.997 mg/l. Measurement of metallothionein levels showed that the average level of metallothionein in the gills of M. nigriceps was 5.860-8.688 ng/mL. Meanwhile, the average level of metallothionein in the liver of M. nigriceps is 7.110-8.334 ng/mL. And the results of the linear regression test showed  that  the  average content of cadmium in the gills and liver with the average metallothionein levels in the  gills  and  liver  of   catfish was significantly correlated.
Intensive Litopenaeus vanamei pond performance with irrigation system based on Distribution of Vibrio spp.
Authors: Madonsa Claritha , Widigdo Bambang , Krisanti Majariana , Yuhana Munti
Published: September 2022

Intensive shrimp ponds are characterized by the high stocking density of shrimp and artificial feeding and are equipped with an irrigation network system. The purpose of this study was to analyze the intensive L.vannamei pond with an irrigation system based on Vibrio spp. distribution to determine environmental quality degradation in terms of the treat of pathogenic bacteria. This study was carried out for one production cycle from March toJuly 2021 in an intensive shrimp farm in Sarjo Village, Pasangkayu Regency, West Sulawesi. The parameters analyzed in this study consisted of Total Bacterial Count (TBC), Total Vibrio Count (TVC), yellow and green colony Vibrio spp. in water using the spread plate method. Water samples for bacterial analysis were taken from 1) source water: (a) surface (0–50 cm depth) and (b) pump mouth; 2) treatment pond; 3) aquaculture pond; 4) Waste Water Treatment Ponds (WWTP); 5) outlet (before discharge into public waters). The results showed that the distribution of bacteria from seawater to WWTPs pond still increased the abundance of Vibrio spp., although the abundance of Vibrio spp. is still safe or below the maximum limit of 104 CFU/mL. Distribution of Vibrio bacteria in Intensive L.vannamei Pond Sarjo Village, West Sulawesi gave a relatively good pond performance because it was characterized by an abundance of Vibrio bacteria in the pond irrigation system from inlet to outlet which was still below the maximum limit and high pond productivity.Keywords:Intensive shrimp pondPathogenicVibrio spp.Pond performanceAquaculture
Dynamics of plankton populations as natural food for fish in a tributary of the Ogan River
Authors: Harmilia Elva Dwi , Khotimah Khusnul , Ma'ruf Irkhamiawan , Pratiwi Intan
Published: September 2022

The research was conducted to determine the abundance, diversity, uniformity, and dominance of plankton in fish stomachs and waters that are expected to provide information about water productivity. The research was carried out in a tributary of the Ogan River, Indralaya District, Ogan Ilir Regency, South Sumatra at three stations, namely Indralaya Mulya Village, Tanjung Seteko Village and Muara Penimbung Village. The method used field surveys and location determination using purposive sampling with fish stomach contents, water samples for plankton observations, and water quality parameters. Fish sampling was carried out six times in 3 months, and water samples for plankton observations were one time per month, from April to June 2018. Plankton is found in fish stomachs and waters with a total abundance of 35.6 - 448.12 ind/l plankton consisting of 8 divisions with 11 classes. The plankton diversity index has moderate diversity and moderate community stability with a value between 1.11 - 1.45. The uniformity index of plankton in the fish stomach showed small uniformity of plankton (0.41-0.67), while in the waters, at station three and station 1 in April, the uniformity was high (E values 0.72 and E 0.93). The value of the plankton dominance index is in the range of 0.27-0.37. No species dominate other species or D = 0 (0.5), with moderately polluted water quality
Percentage of the bycatch and discard composition in artisanal bottom trap fisheries
Authors: Nofrizal Nofrizal , Afriani Afni , Efizon Deni , Jhonnerie Romie
Published: September 2022

Data on bycatch in the fishing effort required to manage fisheries resources. Unfortunately, the data on small-scale and traditional fisheries is still lacking. It makes it challenging to make fishing policies and regulations. Survey activities and experimental fishing were conducted to determine and analyze the composition of the main catch, bycatch and discarded by the local fisher's bottom traps in Sibolga, North Sumatra, Indonesia. Five units of the trap with a size of 150 cm x 100 cm x 50 cm (length x width x height) were used to collect fish data. These five trap units operated in the fishing ground, where local fishers usually operate their fishing gear. The fishing operation carried out within 1 mile of the coastline with water depths ranging from 7-10 meters. The duration of trap setting around 5-7 days for each fishing operation. A motorboat operated with a weight of 5.8 GT. The results showed that the total bottom trap catch consisted of 329 individuals with a total weight of 151.4 kg and 12 demersal fish species. The main catch was 148 individuals (88.9 kg), or 44.7% of the total catch during the experiment i.e. Chepalapholis urodeta, Ephinephelus areolatus, Epinephelus chlorostigma, Plectropomus leopardus, Ephinepelus coioides, Lates calcarifer, Lutjanus malabaricus, and Lutjanus erytropterus. The bycatch was 151 individuals (57.1 kg) or 46.1% i.e. Lethrinus obsoletus, Lutjanus ehrenbergii, Acanthurus auranticavus, Platax teira, Nemipterus japonicus, Scarus rivulatus, Lutjanus johnii, Siganus canaliculatus, Caesio cuning, and Taeniura lymma.While the discarded catch amounted to 30 individuals (5.4 kg) or 9.2% i.e. Naso brevirostris, Diodon holocanthus, and Diadema setosum. The bycatch utilization obtained by fishers was 83.4%, and the unutilized was 16.6%. The percentage of fish sizes worthy for consumption was 135 individuals (74.6%), and the size unworthy for consumption was 46 individuals (25.4%).Keywords:Fishing groundFishing gear Fishing operation Main catchTrap
FRONT MATTER
Authors: Matter Front
Published: September 2022

http://jurnal.unsyiah.ac.id/depik/about/editorialTeam
Temperature and strain sensitivities of a groove bonded fiber Bragg grating at room and cryogenic temperatures
Authors: Huang Xiyong , Davies Mike , Moseley Dominic A. , Salazar Erica E. , Sanabria Charlie , Duke Owen , Ludbrook Bart M. , Badcock Rodney A.
Published: September 2022

Optical fiber Bragg gratings (FBGs) are well suited for applications as temperature or/and strain sensors in harsh environments, e.g., detecting thermal hot spots in high-temperature superconductor (HTS) fusion energy magnets at cryogenic temperatures and high radiation environments. To maximize the signal-to-noise ratio (SNR) of the FBGs to a hot spot, we propose to have them mounted in V-shaped grooves of HTS’ copper former. To investigate the differences between different adhesives on transferring strain and heat in this configuration, five arrays of FBGs are mounted in the V-shaped grooves of a copper dog-bone using Scotch-Weld epoxy, Stycast 2850 FT, Apiezon N, and Loctite 5145 silicone. The copper is cycled through tensile forces in a modified universal tensile tester, subjected to a thermal cycle between 293 K and 77 K, and exposed to heat pulse propagations at 293 K and 80 K. The FBGs that are bonded using Stycast show the highest temperature and strain sensitivities at room and cryogenic temperatures. No major differences in the temperature and strain sensitivities have been found between Ormocer and polyimide coated FBGs. Apiezon N is found to transfer strain consistently well below 245 K, which is comparable with other bonding materials in the temperature range between 77 K and 110 K. The FBGs bonded with the four adhesives in the V-groove configurations are shown to have comparable SNRs to a temperature rise of 20 K at 80 K. This paper emphasizes the importance of maximizing the thermal strain transferred from the host material through the bonding agents to achieve high temperature sensitivity of FBGs.
Analytical equations for a nonconfocal stigmatic three-freeform-mirror
system
Authors: González-Acuña Rafael G.
Published: September 2022

This paper presents a novel method, to the best of our knowledge, to design
three-freeform-mirror systems from scratch. The technique consists of
getting an initial setup, before optimization, which is directly
obtained from the set of all possible stigmatic three-freeform-mirror
systems. Then, deformation coefficients are added to each surface and
optimized to reduce aberration produced by additional fields. The
method has been tested and the results are as expected.
Design of fully interpretable neural networks for digital coherent demodulation
Authors: Huang Xiatao , Jiang Wenshan , Yi Xingwen , Zhang Jing , Jin Taowei , Zhang Qianwu , Xu Bo , Qiu Kun
Published: September 2022

In this paper, we propose a digital coherent demodulation architecture using fully interpretable deep neural networks (NNs). We show that all the conventional coherent digital signal processing (DSP) is deeply unfolded into a well-structured NN so that the established training algorithms in machine learning can be applied. In contrast to adding or replacing certain algorithms of existing DSP in coherent receivers, we replace all the coherent demodulation algorithms with a fully interpretable NN (FINN), making the whole NN interpretable. The FINN is modular and flexible to add or drop modules, including chromatic dispersion compensation (CDC), the digital back-propagation (DBP) algorithm for fiber nonlinearity compensation, carrier recovery and residual impairments. The resulted FINN can be quickly initialized by straightforwardly referring to the conventional DSP, and can also enjoy further performance enhancement in the nonlinear fiber transmissions by NN. We conduct a 132-Gb/s polarization multiplexed (PM)-16QAM transmission experiment over 600-km standard single mode fiber. The experimental results show that without fiber nonlinearity compensation, FINN-CDC obtains less than 0.06-dB SNR gain than chromatic dispersion compensation (CDC). However, with fiber nonlinearity compensation, 2-steps per span FINN-DBP (FINN-2sps-DBP) and FINN-1sps-DBP bring about 0.59-dB and 0.53-dB SNR improvement compared with the conventional 2sps-DBP and 1sps-DBP, respectively.
Growth difference of ZnS/YbF3 Coatings on ZnSe and Glass Substrates
Authors: Amochkina Tatiana , Trubetskov Michael
Published: September 2022

An interesting phenomenon is observed during production of
ZnS/YbF3 multilayers: thicknesses of ZnS-layers are
different in coatings simultaneously deposited on ZnSe and glass
substrates. Verification experiments show that this deviation is
caused by different substrate temperatures.
Additive Solution-Processed Iridescent Metal-Dielectric-Metal (MDM) Structural Color
Authors: Feng Wei-Jie , Guo L. Jay
Published: September 2022

In contrast to conventional vacuum-based deposition techniques, a more cost-effective solution-based process for metal-dielectric-metal (MDM) structural color was developed. Conformal coating of the MDM structures with different colors were achieved on various types of substrates regardless of their conductivity.
A novel approach to RFI shielding for electro-optical systems by using metallic grids
Authors: Farraj Yousef , Joseph Shay , Weber Yarden , Mgdassi Shlomo
Published: September 2022

RFI shielding is essential for many electro-optical systems. We present a new approach of applying a specially designed metallic grid directly on the surface of domes, reducing transparency by only 10% while providing excellent electrical conductivity.
Complementary WO3/ Electrolyte/V2O5 Solid-state Electrochromic Device Deposited with Radio Frequency Magnetron Sputtering
Authors: Chen Hsi-Chao , Zhuang Yu-Xuan , Yen Yu-Hung , Lin You-Peng , Zou Jin-Long
Published: September 2022

Nonorganic thin films were prepared by RF magnetron sputtering, and
vanadium pentoxide (V2O5) was used as an
auxiliary discoloration layer. Then, they are applied to
ITO/WO3/(LiClO4+PC)+PMMA/V2O5/ITO
all solid-state complementary electrochromic device.
Efficiency enhancement of polycrystalline silicon solar cells by a downshifting coating of silicon nanoparticles
Authors: Martinez-Zamora J. A. , Berman-Mendoza D. , Ramos-Carrazco A. , Vera-Marquina A. , Higuera Valenzuela H. J. , Romo-García F. , Carrillo-Torres R. C.
Published: September 2022

A novel method to increase polycrystalline silicon solar cells efficiency by adding downshifting layers of silicon nanoparticles. I-V curves, UV-Vis, DLS and PL characterizations are presented. Power conversion efficiency was improved up to 24.83%.
Formation of NiO Thin-Film via Picosecond Laser Pulses for Energy Storage Electrode Fabrication
Authors: Khot Mayuresh , Kiani Amirkianoosh
Published: September 2022

A single step fabrication of thin-film of NiO is generated by in air laser ablation of Ni with varying scan speed of surface irradiation. Electrochemical tests validate, as the scan-speed decreases, the electrochemical properties improved.
Nickel Oxide Nanostructure Synthesized with Hydrothermal Method for Inverted Perovskite Solar Cell
Authors: Chen Hsi-Chao , Lin Jia-Yu , Zheng Ya-Jun , Cai Yuan-Cheng , Hsiao Chia-Yu
Published: September 2022

Hydrothermal synthesis of nanostructured nickel oxide to modify inverted perovskite solar cells, and the porous properties of the nano-sphere structure can increase the reaction interface between the hole transport and perovskite layers.
Fabrication of plasmonic Ag nanoparticles for optical coating applications
Authors: Shelemin Artem , Baloukas Bill , Zabeida Oleg , Klemberg-Sapieha Jolanta-Ewa , Martinu Ludvik
Published: September 2022

Using silver as a model material, we demonstrate the capabilities of a gas aggregation cluster source for the fabrication of nanoparticles. Furthermore, the resulting Ag nanoparticles are implemented in an optical filter.
Design and Fabrication of a patterned dual colour filter using Microwave plasma assisted Sputtering and Photolithography
Authors: Pomfret Jonathan , Cai Sijia , Han Daxing , Gibson Des , Song Shigeng , Hutson David , Mackay Peter
Published: September 2022

A patterned dual colour filter has been deposited by microwave plasma assisted pulsed DC sputtering (MPAS) and photolithography. Compatibility between MPAS and photolithography for fabrication of patterned optical filters has been demonstrated.
Conformal Anti-Reflective Coatings on 3D DUV Optics
Authors: Huang Ming-Huang , Kim Hoon , Kim Chang-gyu , Park Soo-ho , Wang Jue
Published: September 2022

Conformal AR coatings for DUV optics were performed via atomic layer deposition. 6-layer AR using Al2O3/SiO2 and 4-layer using HfO2/SiO2 were demonstrated with a high transmittance > 99% and a low reflectance at 266 nm.
OIC 2022 - Design Problem Results
Authors: Kruschwitz Jennifer D. T. , Trubetskov Michael , Keck Jason
Published: September 2022

The design problems for OIC 2022 involve a Black Box coating challenge and a set of White-Balanced, Multi-Bandpass Filters for 3D Movie Glasses.