bluuebunny/crossref_metadata_2025 huggingface dataset:
Triple Antithrombotic Therapy in Patients with Acute Coronary Syndrome and Atrial Fibrillation – Balancing Risks and Benefits
Authors:   Department of Cardiology, Emergency Clinical Hospital, Bucharest, Romania, DEACONU Alexandru , DEACONU Silvia ,   Department of Cardiology, Emergency Clinical Hospital, Bucharest, Romania, GATEJ Andreea ,   „Carol Davila” University of Medicine and Pharmacy, Bucharest, Romania, DOROBANTU Maria ,   Department of Cardiology, Emergency Clinical Hospital, Bucharest, Romania
Published: April 2021

Optimal antithrombotic therapy in patients with AF who undergo coronary stenting for an ACS has been a subject of constant change, with the addition of numerous trials in recent years. Objectives: The aim of our study was to assess current antithrombotic treatment in patients with AF and ACS treated with PCI. Material and methods: We performed a observational retrospective study on patients with nonvalvular AF, ACS and PCI between January 2017 and May 2019. We assessed both ischemic risk (IR) and haemorrhagic risk (HR) according to the 2018 ESC guidelines strategies. Results: 184 patients with nonvalvular AF and ACS treated with PCI were eligible for inclusion. In the whole cohort the HR was significantly higher than the IR (3.66+/-1.15 respectively 2.84+/-1.15, p < 0.001). NSTEMI carries both the highest IR and HR (p<0.05). The majority of patients (88.04%) received triple antithrombotic therapy mostly for one month (39%). Main drug combination used was Aspirin, Clopidogrel, antivitamin K (48.48%). Conclusions: In our registry of AF patients with ACS treated with PCI, triple antithrombotic therapy is still the strategy of choice with an initial duration of one month. In our cohort, HR is higher than IR, NSTEMI carrying the highest risks out of all the ACS.
A current view on recurrent laryngeal nerve injury in total thyroidectomy
Authors:   Clinic of General Surgery, „Agrippa Ionescu” Emergency Clinical Hospital, Bucharest, Romania, ALECU Lucian , SLAVU Iulian ,   Clinic of General Surgery, „Agrippa Ionescu” Emergency Clinical Hospital, Bucharest, Romania, TULIN Adrian ,   Clinic of General Surgery, „Agrippa Ionescu” Emergency Clinical Hospital, Bucharest, Romania, BRAGA Vlad ,   Clinic of General Surgery, „Agrippa Ionescu” Emergency Clinical Hospital, Bucharest, Romania, SOCEA Bogdan ,   „Sf. Pantelimon” Emergency Clinical Hospital, Bucharest, Romania, NITIPIR Cornelia ,   Elias Emergency Clinical Hospital, Bucharest, Romania
Published: April 2021

Introduction: Recurrent laryngeal nerve damage during total thyroidectomy was, is, and probably will be in the near future the Achilles’ heel of total thyroidectomy. Material and method: To perform the research we used the PubMed database. The questions were conceived to respect the PICOS guidelines. The PRISMA checklist was used to filter the results. The search was structured following the words: „recurrent laryngeal nerve injury” AND „total thyroidectomy”. Results: A total of 60 papers were identified. We excluded 12 papers as they were duplicates. From the 48 papers left, another 4 could not be obtained. Another 3 papers from the 44 left were excluded due to the fact they were not written in English. One paper was excluded as the subject did not follow our research purpose. 40 papers were left for analysis and discussion. Conclusion: To prevent recurrent laryngeal nerve lesions, at the moment in the literature there is no consensus. Unintentional injury to the recurrent laryngeal nerve is predictable but not an avertible situation thus bilateral lesions still represent a dramatic situation across the world for the patients and the operating surgeon.
Legal Challenges for Romanian Family Medicine Practitioners in Times of ‘COVID-19’
Authors:   „Carol Davila” University of Medicine and Pharmacy, Bucharest, Romania, PAUN Silviu Dumitru , BIRSANU Sinziana-Elena ,   „Carol Davila” University of Medicine and Pharmacy, Bucharest, Romania, NANU Codrut Andrei ,   „Carol Davila” University of Medicine and Pharmacy, Bucharest, Romania
Published: April 2021

The general practitioners (GPs’) practice faced serious challenges as a result of COVID-19 pandemic, including from a legal point of view. In this context, a series of questions related to the GPs’ professional activities might arise such as: (i) what happens if a doctor makes a mistake because he/she is exhausted, as a result of overtime or (ii) if he/she performs medical acts outside the boundaries of his/her own specialty or without consent, as requested by his/her own conscience, by the situation, by the authorities and by his/her principal? In all these special circumstances this could mean that the doctor fails to comply with the applicable law. Moreover, because he/she breaches the law, the professional insurance policy will cease to be applicable. With new roles and responsibilities, the GPs should adjust their practice to the current conditions.
Reconstruction after big nasal tumors
Authors:   „Agrippa Ionescu” Emergency Clinical Hospital, Bucharest, Romania, MEHEDINTU Mihai , COMAN Stefan-Andrei ,   „Agrippa Ionescu” Emergency Clinical Hospital, Bucharest, Romania, TOADER Horia ,   „Agrippa Ionescu” Emergency Clinical Hospital, Bucharest, Romania, STEFAN Corina-Maria ,   „Agrippa Ionescu” Emergency Clinical Hospital, Bucharest, Romania, JECAN Radu-Cristian ,   Department of Plastic and Reconstructive Surgery, „Carol Davila” University of Medicine and Pharmacy, Bucharest, Romania
Published: April 2021

This article comes as a presentation of the clinical experience in the plastic surgery department. Gather the experience of 3 clinical cases, more representative, with different histopathological tumors, of important dimensions that occupied a large part of the facial anatomical unit, the nose. The article is structured by presenting the risk factors that are the causes of malignant lesions and by recalling the therapeutic options and general principles of addressing large lesions. Malignant lesions that occur most frequently in the nose are reviewed. We consider that it is a serious health problem, with various consequences, of a functional nature, which can affect the airways and aesthetically that can lead to a reconsideration of self-respect and the perception of the affected person towards his peers. The approach of the cases was done sequentially. The first surgical stage involved the excision of the lesion with the oncological safety limit, the defect being larger than the lesion and the more elaborate therapeutic options on the reconstruction scale. The first operative stage ended each time with covering the defect with a graft to have the confirmation of the histopathological examination, free of the tumor. The second stage of the treatment involved lifting the flap and accommodating it. The last surgical stage involved the sectioning of the pedicle and its reintegration into the donor area.
Late malignancy after 26 years of evolution on an untreated perianal fistula
Authors:   Fundeni National Institute, Bucharest, Romania, ANDREI Lucian Sorin , ANDREI Adriana Corina ,   Fundeni National Institute, Bucharest, Romania, MICU Alexandru ,   Fundeni National Institute, Bucharest, Romania, POPISTEANU Radu Sorin ,   Fundeni National Institute, Bucharest, Romania, DUMBRAVA Mona ,   Fundeni National Institute, Bucharest, Romania
Published: April 2021

Squamous cell carcinoma and basal cell carcinoma are two types of neoplasms that rarely affect the perianal region, and their etiology is still a matter for debate. We present the case of a 75 year old patient with a 26 year history of perianal fistula, who presents with purulent and fecal perianal discharge and swelling at this level. Physical examination and anoscopy detected low transsphincteric fistula. The biopsy revealed the diagnosis of squamous cell carcinoma, for which a local excision was performed followed by adjuvant radiotherapy. Two years after this event, the patient presented with another perianal lession, which according to the histopathological result was a basal cell carcinoma; local excision was the only treatment performed for this malignancy.
X-ray micro-tomographic data of live larvae of the beetle Cacosceles newmannii
Authors: Lehmann Philipp , Javal Marion , du Plessis Anton , Tshibalanganda Muofhe , Terblanche John S.
Published: April 2021

Quantifying insect respiratory structures and their variation has remained challenging due to their microscopic size. Here we measure insect tracheal volume using X-ray micro-tomography (µCT) scanning (at 15 µm resolution) on living, sedated larvae of the cerambycid beetle Cacosceles newmannii across a range of body sizes. In this paper we provide the full volumetric data and 3D models for 12 scans, providing novel data on repeatability of imaging analyses and structural tracheal trait differences provided by different image segmentation methods. The volume data is provided here with segmented tracheal regions as 3D models.
SISTEM PENGOLAHAN BAHAN PUSTAKA DI PERPUSTAKAAN SMPN 6 MATARAM
Authors: Lubis Lubis , Furbani Widyastuti , Dwicahyadi Wisnu
Published: April 2021

Judul penelitian yang diambil adalah “sistem pengolahan bahan pustaka di perpustakaan SMPN 6 Mataram” tujuan dari penelitian ini diarahkan untuk mencapai hal-hal sebagai berikut : Tujuan penelitian yaitu (1) Untuk mengetahui sistem pengolahan bahan pustaka di perpustakaan SMPN 6 Mataram dan. Jenis penelitian ini adalah penelitian deskriptif dengan pendekatan kualitatif. Sumber data dalam penelitian ini adalah pengelola perpustakaan SMPN 6 Mataram. Teknik pengumpulan data melalui observasi, wawancara dan dokumentasi. Teknik analisis data dalam bentuk reduksi data, penyajian data dan menarik kesimpulan untuk memperoleh hasil akhir. Dari data hasil penelitian dan pembahasan diketahui bahwa (1) sistem pengolahan bahan pustaka di perpustakaan SMPN 6 Mataram dilakukan pengecekan bahan pustaka, inventarisasi, katalogisasi, penentuan nomor klasifikasi, pelabelan dan penataan buku di rak (shelving).
PENERAPAN APLIKASI SLIMS AKASIA DALAM PELAYANAN INFORMASI PEMUSTAKA DI UPT PERPUSTAKAAN UNIVERSITAS MATARAM PERIODE 2019
Authors: Ridwan Ridwan , Susanto Supriadin
Published: April 2021

Penelitian ini berjudul Penerapan Aplikasi SLIMS Akasia Dalam Pelayanan Informasi Pemustaka di UPT Perpustakaan UNRAM:1) Untuk Mengetahui bagaimana Penerapan Aplikasi SLIMS Akasia Dalam Pelayanan Informasi Pemustaka di UPT Perpustakaan Universitas Mataram 2) Untuk Mengetahui Kendala-Kendala dalam Penerapan Aplikasi SLIMS Akasia Dalam Pelayanan Informasi Pemustaka di UPT Perpustakaan Universitas Mataram. Metode penelitian yang digunakan adalah Metode penelitian kualitatif dengan pengumpulan data menggunakan observasi, wawancara, dan dokumentasi. Hasil penelitian menujukan bahwa: pertama Aplikasi SLIMS Akasia di UPT perpustakaa unram diterapkan pada pelayanan informasi pemustaka, Kegiatan layanan sirkulasi terdiri dari peminjaman bahan pustaka, pengembalian bahan pustaka, perpanjangan masa pinjam bahan pustaka, pembuatan kartu anggota Perpustakaan, perpanjang masa keanggotaan perpustakaan, penentuan denda, dan sebagainya. Didalam SLIMS Akasia terdiri dari beberapa menu yaitu: OPAC, Bibliografi, Sirkulasi, Keanggotaan. Kedua Cara mengatasi kendala-kendala pada Penerapan SLIMS Akasia dalam pelayanan informasi pemustaka di UPT Perpustakaan unram yaitu: 1). menprogramkan untuk pengadaan genset sebagai langkah antisipasi bila terjadi mati lampu,2) Mengadakan worshop dan pelatihan untuk meningkatkan kualitas, keterampilan(Skill) pustakawan agar lebih handal.
Trust and fuzzy inference based cross domain serendipitous item recommendations (TFCDSRS)
Authors: Richa  , Bedi Punam
Published: April 2021

Recommender System (RS) is an information filtering approach that helps the overburdened user with information in his decision making process and suggests items which might be interesting to him. While presenting recommendation to the user, accuracy of the presented list is always a concern for the researchers. However, in recent years, the focus has now shifted to include the unexpectedness and novel items in the list along with accuracy of the recommended items. To increase the user acceptance, it is important to provide potentially interesting items which are not so obvious and different from the items that the end user has rated. In this work, we have proposed a model that generates serendipitous item recommendation and also takes care of accuracy as well as the sparsity issues. Literature suggests that there are various components that help to achieve the objective of serendipitous recommendations. In this paper, fuzzy inference based approach is used for the serendipity computation because the definitions of the components overlap. Moreover, to improve the accuracy and sparsity issues in the recommendation process, cross domain and trust based approaches are incorporated. A prototype of the system is developed for the tourism domain and the performance is measured using mean absolute error (MAE), root mean square error (RMSE), unexpectedness, precision, recall and F-measure.
URLCam: Toolkit for malicious URL analysis and modeling
Authors: Ayub Mohammed , El-Alfy El-Sayed M.
Published: April 2021

The World-Wide Web technology has become an indispensable part in human’s life for almost all activities. On the other hand, the trend of cyberattacks is on the rise in today’s modern Web-driven world. Therefore, effective countermeasures for the analysis and detection of malicious websites is crucial to combat the rising threats to the cyber world security. In this paper, we systematically reviewed the state-of-the-art techniques and identified a total of about 230 features of malicious websites, which are classified as internal and external features. Moreover, we developed a toolkit for the analysis and modeling of malicious websites. The toolkit has implemented several types of feature extraction methods and machine learning algorithms, which can be used to analyze and compare different approaches to detect malicious URLs. Moreover, the toolkit incorporates several other options such as feature selection and imbalanced learning with flexibility to be extended to include more functionality and generalization capabilities. Moreover, some use cases are demonstrated for different datasets.
Cloud service negotiation framework for real-time E-commerce application using game theory decision system
Authors: Rajavel Rajkumar , Ravichandran Sathish Kumar , Nagappan Partheeban , Ramasubramanian Gobichettipalayam Kanagachidambaresan
Published: April 2021

A major demanding issue is developing a Service Level Agreement (SLA) based negotiation framework in the cloud. To provide personalized service access to consumers, a novel Automated Dynamic SLA Negotiation Framework (ADSLANF) is proposed using a dynamic SLA concept to negotiate on service terms and conditions. The existing frameworks exploit a direct negotiation mechanism where the provider and consumer can directly talk to each other, which may not be applicable in the future due to increasing demand on broker-based models. The proposed ADSLANF will take very less total negotiation time due to complicated negotiation mechanisms using a third-party broker agent. Also, a novel game theory decision system will suggest an optimal solution to the negotiating agent at the time of generating a proposal or counter proposal. This optimal suggestion will make the negotiating party aware of the optimal acceptance range of the proposal and avoid the negotiation break off by quickly reaching an agreement.
Data-driven sequential three-way decisions for unlabeled information system
Authors: Yang Jie , Luo Tian , Zhao Fan , Li Shuai , Jin Xin
Published: April 2021

Based on the granular computing and three-way decisions theory, the sequential three-way decisions (S3WD) model implements the idea of progressive computing. However, almost S3WD models are established based on labeled information system, and there is still a lack of S3WD model for processing unlabeled information system (UIS). In this paper, to solve the issue of given accepted number for UIS, a data-driven sequential three-way decisions (DDS3WD) model is proposed. Firstly, from the perspective of similarity computed by TOPSIS, a general three-way decisions model for UIS based on decision risk is presented and its shortcomings are analyzed. Then, a concept of optimal density difference is defined to establish the DDS3WD model for UIS by updating attributes. Finally, the related experiments show that DDS3WD is feasible and effective for dealing with UIS under the condition of given accepted number of objects.
The credit analysis of transportation capacity supply chain finance based on core enterprise credit radiation
Authors: Xu Lili , Liu Feng , Chu Xuejian
Published: April 2021

This study examines the application of the business model of supply chain finance depending on the core enterprise, to the credit financing of transportation capacity enterprises. It studies the credit transmission characteristics regarding core enterprise credit radiation, presents the core enterprise credit segmentation and credit pricing, and transforms them into the calculation of credit guarantee and the default probability of core enterprises. Credit guarantee is regarded as a constraint of financial institutions’ credit decisions. Using probability density and logistic tools, we construct a profit maximization model for financial institutions and solve their optimal credit decision for a specific interest rate. Through numerical experiments, we verify the validity of the model and conclude that increasing the business volume between financing enterprises and core enterprises or reducing the probability of default can effectively improve financial institutions’ credit line.
Comparison of machine learning methods in predicting binary and multi-class occupational accident severity
Authors: Recal Füsun , Demirel Tufan
Published: April 2021

Although Machine Learning (ML) is widely used to examine hidden patterns in complex databases and learn from them to predict future events in many fields, utilization of it for predicting the outcome of occupational accidents is relatively sparse. This study utilized diversified ML algorithms; Multinomial Logistic Regression (MLR), Support Vector Machines (SVM), Single C5.0 Tree (C5), Stochastic Gradient Boosting (SGB), and Neural Network (NN) in classifying the severity of occupational accidents in binary (Fatal/NonFatal) and multi-class (Fatal/Major/Minor) outcomes. Comparison of the performance of models showed Balanced Accuracy to be the best for SVM and SGB methods in 2-Class and SGB in 3-Class. Algorithms performed better at predicting fatal accidents compared to major and minor accidents. Results obtained revealed that, ML unveils factors contributing to severity to better address the corrective actions. Furthermore, taking action related to even some of the most significant factors in complex accidents database with many attributes can prevent majority of severe accidents. Interpretation of most significant factors identified for accident prediction suggest the following corrective measures: taking fall prevention actions, prioritizing workplace inspections based on the number of employees, and supplementing safety actions according to worker’s age and experience.
S-CCCapsule: Pneumonia detection in chest X-ray images using skip-connected convolutions and capsule neural network
Authors: Adu Kwabena , Yu Yongbin , Cai Jingye , Dela Tattrah Victor , Adu Ansere James , Tashi Nyima
Published: April 2021

The squash function in capsule networks (CapsNets) dynamic routing is less capable of performing discrimination of non-informative capsules which leads to abnormal activation value distribution of capsules. In this paper, we propose vertical squash (VSquash) to improve the original squash by preventing the activation values of capsules in the primary capsule layer to shrink non-informative capsules, promote discriminative capsules and avoid high information sensitivity. Furthermore, a new neural network, (i) skip-connected convolutional capsule (S-CCCapsule), (ii) Integrated skip-connected convolutional capsules (ISCC) and (iii) Ensemble skip-connected convolutional capsules (ESCC) based on CapsNets are presented where the VSquash is applied in the dynamic routing. In order to achieve uniform distribution of coupling coefficient of probabilities between capsules, we use the Sigmoid function rather than Softmax function. Experiments on Guangzhou Women and Children’s Medical Center (GWCMC), Radiological Society of North America (RSNA) and Mendeley CXR Pneumonia datasets were performed to validate the effectiveness of our proposed methods. We found that our proposed methods produce better accuracy compared to other methods based on model evaluation metrics such as confusion matrix, sensitivity, specificity and Area under the curve (AUC). Our method for pneumonia detection performs better than practicing radiologists. It minimizes human error and reduces diagnosis time.
Rough approximations of bipolar soft sets by soft relations and their application in decision making
Authors: Shabir Muhammad , Mubarak Asad , Naz Munazza
Published: April 2021

The rough set theory is an effective method for analyzing data vagueness, while bipolar soft sets can handle data ambiguity and bipolarity in many cases. In this article, we apply Pawlak’s concept of rough sets to the bipolar soft sets and introduce the rough bipolar soft sets by defining a rough approximation of a bipolar soft set in a generalized soft approximation space. We study their structural properties and discuss how the soft binary relation affects the rough approximations of a bipolar soft set. Two sorts of bipolar soft topologies induced by soft binary relation are examined. We additionally discuss some similarity relations between the bipolar soft sets, depending on their roughness. Such bipolar soft sets are very useful in the problems related to decision-making such as supplier selection problem, purchase problem, portfolio selection, site selection problem etc. A methodology has been introduced for this purpose and two algorithms are presented based upon the ongoing notions of foresets and aftersets respectively. These algorithms determine the best/worst choices by considering rough approximations over two universes i.e. the universe of objects and universe of parameters under a single framework of rough bipolar soft sets.
Robust configuration and intelligent MPPT control for building integrated photovoltaic system based on extreme learning machine
Authors: An Qing , Tang Ruoli , Su Hongfeng , Zhang Jun , Li Xin
Published: April 2021

Due to the promising performance on energy-saving, the building integrated photovoltaic system (BIPV) has found an increasingly wide utilization in modern cities. For a large-scale PV array installed on the facades of a super high-rise building, the environmental conditions (e.g., the irradiance, temperature, sunlight angle etc.) are always complex and dynamic. As a result, the PV configuration and maximum power point tracking (MPPT) methodology are of great importance for both the operational safety and efficiency. In this study, some famous PV configurations are comprehensively tested under complex shading conditions in BIPV application, and a robust configuration for large-scale BIPV system based on the total-cross-tied (TCT) circuit connection is developed. Then, by analyzing and extracting the feature variables of environment parameters, a novel fast MPPT methodology based on extreme learning machine (ELM) is proposed. Finally, the proposed configuration and its MPPT methodology are verified by simulation experiments. Experimental results show that the proposed configuration performs efficient on most of the complex shading conditions, and the ELM-based intelligent MPPT methodology can also obtain promising performance on response speed and tracking accuracy.
User opinions driven social recommendation system
Authors: Paleti Lakshmikanth , Radha Krishna P. , Murthy J.V.R.
Published: April 2021

Recommendation systems provide reliable and relevant recommendations to users and also enable users’ trust on the website. This is achieved by the opinions derived from reviews, feedbacks and preferences provided by the users when the product is purchased or viewed through social networks. This integrates interactions of social networks with recommendation systems which results in the behavior of users and user’s friends. The techniques used so far for recommendation systems are traditional, based on collaborative filtering and content based filtering. This paper provides a novel approach called User-Opinion-Rating (UOR) for building recommendation systems by taking user generated opinions over social networks as a dimension. Two tripartite graphs namely User-Item-Rating and User-Item-Opinion are constructed based on users’ opinion on items along with their ratings. Proposed approach quantifies the opinions of users and results obtained reveal the feasibility.
An efficient mobility prediction model for resource allocation in mobile cloud computing
Authors: Akki Praveena , Vijayarajan V.
Published: April 2021

Mobile cloud computing (MCC) is a technology which provides cloud server resources to mobile users with optimized latency. MCC allows mobile device to access cloud resources and to offload tasks to cloud let servers at any time and from anywhere. The cloud let servers are attached to wireless Access points. But mobility plays an important role which leads to the loss of connectivity of mobile devices because of varying signal strengths. On the other hand, optimal code execution is a challenge. In this paper, a connectivity base mobility prediction method is proposed to assign the cloud resources to the user without loss in the connection. The past accessing history of the users and path loss factors are taken into consideration to predict proper access point. From the performance evaluation the performance of the proposed method is increased by 15.23% when compared to other existing methods.
Effect of posture control training using virtual reality program on sitting balance and trunk stability in children with cerebral palsy
Authors: Park Se-Hee , Son Sung-Min , Choi Ji-Young
Published: April 2021

OBJECTIVE: We aimed to determine whether the posture control training in the sitting posture using virtual reality (VR) training program affects sitting balance and trunk stability in children with spastic cerebral palsy (CP). METHODS: The experiment was conducted for 4 weeks by randomly allocating 20 children with CP. The experimental group (n = 10) performed balance training in the sitting position using a VR training program, and the control group (n = 10) performed arm reach training in the sitting position. To evaluate static and dynamic sitting balance and trunk stability, the Wii Balance Board and Balancia software, the modified functional reach test, and the Korean version of the Trunk Control Measurement Scale were used. RESULTS: There were significant differences between the two groups in the changes in speed and postural swing distance before and after training (p < 0.05). The mFRT measurement showed significant differences in all directions before and after training between the two groups (p < 0.05). However, there was no significant difference between the two groups in the K-TCMS score. CONCLUSIONS: Posture control training in the sitting position using a VR training program was found to be more effective in improving the sitting balance and trunk stability of children with CP.
Occupational health practices among dental care professionals before and during the COVID-19 pandemic
Authors: Banaee Sean , Claiborne Denise M. , Akpinar-Elci Muge
Published: April 2021

BACKGROUND: The COVID-19 pandemic has posed a substantial burden on dental care professionals. While dentistry is known as one of the most exposed and high-risk professions, dental care professionals are indeed at even greater risk. OBJECTIVE: The aim of this study was to assess knowledge, attitudes, occupational health practices, personal protective equipment usage, and mental stressors during COVID-19 pandemic among dental care professionals. METHODS: A cross-sectional study was conducted among dental care professionals who were subscribers to a dental hygiene journal using a self-administered online survey (n = 1047 respondents). Cross-tabulations were performed to determine differences in the responses to the statements related to different domains. RESULTS: COVID-19 impacted the healthy work-life balance (p <  0.001) and caused sleeping difficulty among the respondents (p <  0.001). Moreover, a lower response on changing respirators and gloves for each patient compared with before viral pandemic was observed (p <  0.01). CONCLUSIONS: Ongoing training on infection control, occupational health practices, and PPE usage can prevent the transmission of COVID-19 among dental care professionals and the public. Lack of adequate personal protective equipment (PPE) is a burden for applying occupational health practices in dental clinics and present a risk to the public. COVID-19 may contribute to developing psychological stress and disrupt healthy work-life balance among dental professionals.
Physical fitness: Differences between initial hiring to academy in law enforcement recruits who graduate or separate from academy
Authors: Lockie Robert G. , Dawes J. Jay , Orr Robin M. , Dulla Joseph M.
Published: April 2021

BACKGROUND: Law enforcement agencies often include fitness testing as part of the hiring process. However, it can be months from this testing to when a recruit starts academy. OBJECTIVE: To determine fitness changes from hiring to academy in recruits who graduate (GRAD) or separate (SEP; do not complete) from academy. METHODS: Analysis on recruits from one agency, split into GRAD (n = 436) and SEP (n = 78) groups, was conducted. These tests were conducted during initial hiring and academy: push-ups, sit-ups, and arm ergometer revolutions in 60 s; 75-yard pursuit run (75PR); and 2.4 km run. Data were analyzed via a two-way repeated measures ANOVA. Change scores were derived between hiring and academy data for both groups, and analyzed via independent samples t-tests. RESULTS: Push-ups, 75PR, arm ergometer, and 2.4 km run generally improved (p≤0.001). There were no significant between-group interactions or differences in performance changes for GRAD and SEP recruits. SEP recruits tended to have lesser fitness test performance compared to GRAD recruits. CONCLUSIONS: GRAD and SEP recruits showed some fitness improvements between initial hiring through to academy. However, SEP recruits with lesser muscular endurance, running speed, and aerobic capacity during hiring did not substantially improve by academy, which likely impacted their academy survivability.
Results of selection work with grain crops in the subarctic zone of the Russian Federation
Authors: Batakova O. B. , Korelina V. A. , Zobnina I. V.
Published: April 2021

Agriculture of the Northern regions specializes in animal husbandry, in this regard an urgent problem of crop production in the conditions of the Northern regions of the Russian Federation is the creation of precocious, high-yielding varieties of grain crops for fodder purposes. The article reflects the selection achievements in grain crops over the past seven years. The presented new varieties combine high yield, increased environmental plasticity, and have the ability to reduce their productivity to a lesser extent when cultivated in the harsh conditions of the Northern region. Breeding work conducted at the laboratory of crop production of the Primorskiy filial FGBUN FICKIA RAN - ArhNIISKH in 2005-2019, in breeding semipolar rotation in accordance with the "Guidelines on the selection of barley and oats" (2014), methodology of State Commission for testing of agricultural crops (1985). The digestibility of winter rye dry matter was determined by in vitro method on an artificial stomach. Statistical processing of experimental results was performed using the AGROS version 2.07 selection and genetic software package. Results of the study. As a result of selection work, precocious productive varieties of grain crops of the feed direction were bred and included in the state register. Bereginya — new-generation winter rye variety, universal use, with a low content of water-soluble pentosans in the grain. The variety has been included in the State register of selection achievements since 2013. Variety of spring barley Tausen — feed direction, resistant to environmental stress factors, high-yielding, resistant to lodging and pathogens (dusty smut, spotting). It has been included in the State register of selection achievements since 2014. Spring barley variety Kotlassky — feed direction precocious, productive, adaptive to adverse environmental factors, for obtaining concentrated feed for livestock and poultry. It has been included in the State register of breeding achievements since 2019. Arhan spring oat variety — environmentally plastic adapted to changes in soil and climate conditions, immune to dusty smut, combines a high yield of grain and green mass. Since 2020, it has been included in the State register of selection achievements.
Experimental feed mixer performance study
Authors: Mammadov G. B. , Kamran T. F.
Published: April 2021

The importance of rational use of waste from the processing of grapes, fruits, sugar beets and grain crops in the preparation of high-grade feed is noted. In this regard the relevance of the development of effective technical means for mixing liquid or pasty additives with traditional feed is emphasized. An experimental feed mixer with the ability to produce feed mixtures using secondary raw materials of various aggregate states has been developed. The task of the experimental work was to study its performance under various operating modes. As a result of laboratory studies, it was found that with an increase in the rotational speed of the working body from 60 to 120 min-1 the productivity of the experimental feed mixer increased from 2,0 to 3,3 t/h. With the subsequent decrease in the amplitude of oscillations of the inter-screw cavity (with a decrease in its volume) the increase in productivity slows down.
Incubation qualities of eggs and the level of protein ingredients in the blood of embryos and goslings by optimizing the level of tryptophan in the diet of geese of the parent flock
Authors: Volovich V. M.
Published: April 2021

The results of studies on the effect of synthetic tryptophan supplements to goose feed during the reproductive period on the incubation qualities of eggs, the level of total protein, albumin and α-, β- and γ-globulins in the blood of embryos and newborn goslings are presented. The study was conducted on four groups of geese-analogues of the Obroshyn gray breed group during the 3-month period (January ‒ March). The control group did not receive synthetic tryptophan supplements. The level of this amino acid in this group of geese in accordance with current regulations in Ukraine was 0.16 g per 100 g of feed. To the diet of birds 2, 3 and 4 experimental groups were additionally administered, respectively, 0.04; 0.09 and 0.14 g of synthetic tryptophan per 100 g of feed. As a result of research it was found that increasing the level of tryptophan from 0.16 g to 0.30 g per 100 g of feed due to its synthetic analogue in the diet of geese during egg-laying significantly improves the incubation quality of eggs and has a positive effect on protein levels. daily embryos and 5-day-old goslings. It is shown that the most pronounced effect on improving the quality of hatching eggs and optimizing the effect on the level of protein in the blood of embryos and goslings reveals the content of tryptophan in feed during intensive laying of geese in the amount of 0.25 g per 100 g of feed. Studies have shown that the quality of hatching eggs and the content of total protein, albumin and α-, β- and γ-globulins in the blood of embryos and newborn goslings has a pronounced positive effect on the level of tryptophan in the diet of geese during intensive laying. In particular, increasing the amount of this essential amino acid in goose feed during the reproductive period from 0.16 to 0.30 g due to its synthetic analogue improves such incubation qualities of eggs as: egg-laying, weight, length, width, egg shape index, strength and thickness eggshells, and increases in the serum of 25-day-old embryos and 5-day-old goslings contents of total protein, albumin and α-, β- and γ-globulins (P < 0.05). It is shown that the most pronounced positive effect on the optimization of protein ingredients in the serum of both embryos and goslings was found for the content of tryptophan in the feed of geese of the parent flock in the amount of 0.25 g per 100 g of feed. The results show that increasing the level of such essential amino acids as tryptophan in goose feed during intensive egg-laying from 0.16 to 0.25 g per 100 g of feed activates the synthesis of egg components in the ovary of birds, improves their quality and has a stimulating effect on the biosynthesis in hepatocytes of embryos and newborn goslings of total protein, its albumin, α-, β-globulin fractions and immune γ-globulins.
Growth parameters and living weight of the geese of diferent genotypes
Authors: Paskevych G. A. , Khvostik V. P. , Fijalovych L. M.
Published: April 2021

The article presents the results of determining the parameters of growth intensity in the geese of different genotypes in the process of creating a dimorphic population. It was found that in the geese of the Rhine and Large Gray breeds, dimorphic population, high rates of formation intensity were determined during the first three weeks of life, slightly lower – in the offspring of F1-F3. For the value of this criterion, a tendency to increase from the descendants of F1 to dimorphic geese. In most cases, the bird of the original breed was characterized by a higher growth rate than the hybrids. The highest values of the growth uniformity index are characteristic of Large Gray geese, which indicates a better gradual uniform development of their internal organs and systems compared to birds of other studied groups. F1 hybrid geese, having a high live weight at 9 weeks of age, were characterized by a higher value of growth uniformity. Dimorphic geese in this parameter predominated only in F2 hybrids. The growth uniformity index shows a high correlation with live weight of the geese at 9 weeks of age (r = 0.6518). This indicates that with its use it is possible with a high probability to predict the further live weight of the bird. High rates of absolute and relative growth and the index of uniformity of growth contribute to the formation of high live weight in geese of Large Gray breed in the early ontogenesis. This indicates their moderate type of growth, ie obtained close indicators of relative growth in adjacent age periods. The maximum values of the growth stress index were determined in poultry of the original breeds, which indicates a more uniform intense growth of young animals. The geese of the created dimorphic population, which outnumbered the descendants of the first-third generation, were also characterized by relatively high values of this indicator. The growth stress index shows a close correlation with the indicators of the intensity of formation (r = 0.9559). A negative correlation was established between the growth stress index and the value of the relative growth – r = -0.4033. With an increase in the growth stress index, an increase in the value of the average daily increase (r = 0.6934) is expected.
Monitoring of the main parameters of pond water in order to obtain safe products for joint cultivation of sturgeon and carp fish
Authors: Grynevych N. Ye. , Sliusarenko A. O. , Khomiak O. A. , Svitelskyi M. M. , Semaniuk N. V.
Published: April 2021

The article presents the results of studying the hydrochemical regimes of carp ponds in polyculture and for the introduction of sterlet (Acipenser ruthenus) into polyculture. The highest pH values were in pond 2, and in the second half of June and the first half of July exceeded the upper limit of normal (norm 6.5–8.5) by 0.3 and 0.5, respectively. In July, the upper limit of the norm was exceeded in the water of pond 1, by 0.1 and 0.2, respectively. From August, the pH of water increased in both ponds until October and in pond 2 the active reaction of water was higher, compared to pond 1, 5.08.2020, by 18.3 %, 20.08.2020 by 12.3 %, 5.09.2020, by 3.8 %, 20.09.20 and 5.10.20, respectively by 2.5 and 2.4 %. Higher in pond 2, compared with pond 1, was the permanganate oxidation of water in all studied periods, but the largest difference was 5.07.2020 and amounted to 6.9 mg O/l. In the second half of July, permanganate oxidation of water was the lowest, but was at the upper limit of normal, then in August increased sharply and was highest in October – 26.3 mg O/l in the pond 1 and 26.5 mg O/l in the pond 2. Dichromatic oxidation of water of the studied ponds was during the experiment in pond 2 slightly higher than normal and ranged from 50.5 (5.06.2020) to 57.9 (5.07.2020) mg O/l and only 20.07.2020 it was the lowest and was 34.2 mg O/l. In pond 1, the dichromate oxidation of water at the beginning of the experiment was 52 mg O/l, gradually decreased and 20.06.2020, was 46 mg O/l, in July, the chemical oxygen demand (COD) increased sharply to 63.6 and also decreased sharply up to 40.5 mg O/l. From 05.08.2020, COD rose by 27.8 % above normal, remained at approximately the same level during September and decreased to 62 mg O/l in early October. The content of free ammonia in the water during the whole period of fish farming exceeded the norm from 2.6 to 5 times, and the highest, except for 20.06.2020, it was in pond 2. The highest difference in ammonia content in the water of the studied ponds was 5.07.2020 and 5.10.2020, and was, respectively, 0.1 and 0.08 mg N/l. The content of ammonium nitrogen and mineral phosphorus in the water of the studied ponds exceeded the norm, and the nitrogen content of nitrates and nitrites was within the norm. In pond water, the concentration of Ca2+, Mg2+, Na+, CO32-, HCO3-, SO42-, Cl-did not exceed the norm. was 5.07.2020, and was 1.20 mg/dm³, which is higher than the norm by 20 %. The total hardness and mineralization of water in the studied ponds did not exceed the norm.
Conflictos en el mar. El buceo con tiburones en Nueva Zelanda
Authors: Oyarzún Lillo Fernando
Published: April 2021

Esta investigación exploratoria examina un interesante conflicto entre stakeholders por el uso de bienes o recursos de uso común para el turismo. Metodológicamente el análisis se basa en un estudio de caso con un enfoque cualitativo, que consigna entrevistas semiestructuradas, observación participante y análisis de documentos relevantes relacionados con el caso. Desde que en el año 2008 operadores externos a la comunidad comenzaron a ofrecer experiencias de buceo en jaula con tiburones en Stewart Island, Nueva Zelanda, la comunidad local ha presentado una fuerte oposición hacia esta actividad, especialmente por parte de los buzos comerciales que trabajan en estas aguas extrayendo abalones. Ellos piensan que la alimentación de tiburones por parte de los operadores turísticos podría afectar el comportamiento de estos depredadores, poniendo en peligro no solo su medio de subsistencia, sino también sus vidas. La presente investigación busca describir, caracterizar y analizar el conflicto dado, identificando los aspectos clave que podrían estar dificultando su solución. Para esto, el conflicto es estudiado utilizando el enfoque de gestión llamado Co-gestión Adaptativa. Se utilizó este enfoque como paradigma de análisis debido a que ha probado ser una eficiente herramienta para solucionar conflictos basados en el uso de recursos de uso común, especialmente porque permite a las partes involucradas aprender de las otras, permitiéndoles lidiar con problemas de gestión cada vez más complejos a través de la generación de procedimientos que permiten solucionar conflictos presentes y futuros de una manera eficiente. El análisis del conflicto muestra la ausencia de esfuerzos de ambas partes para intentar alcanzar una solución debido a las fuertes posiciones antagonistas, siendo la falta de confianza un obstáculo clave para la colaboración. Además, se evidencia la falta de un liderazgo que guíe a las partes hacia un entendimiento. Este caso ofrece una interesante oportunidad para observar la complejidad de los sistemas socio-ecológicos como una fuente de recursos de uso común.
FUNGICIDAL PROPERTIES OF N-(p-CARBOXYPHENYL)IMIDE-2,3-DICHLOROBICYCLO-[2.2.1]HEPT-5-EN-2,3-DICARBOXYLIC ACID
Authors:   M.Nagiyev Institute of Catalysis and Inorganic Chemistry, of NAS of Azerbaijan, Nagiev Y.M.
Published: April 2021

As a result of the interaction of substituted aminobenzoic acids and dichloromaleic anhydride in glacial acetic acid, various N-substituted imides of dichloromaleic acid have been obtained. Based on the diene synthesis of cyclopentadiene and N-substituted imides of dichloromaleic acid, N-(orthometa- and para-carboxyphenyl)imides of 2,3-dichlorocyclo-[2.2.1]hept-5-ene-2,3-dicarboxylic acid have been syn¬thesized. The obtained imides have been tested as a potential effective complex biologically active drug. The results of multiple tests have demonstrated that these compounds possess, simultangonsly, high fungicidal and bactericidal activity against cotton verticillus wilt. So, for a concentration of 0.1%, the obtained compounds almost completely destroy the fungus verticillum dahliae, as well as thionic iron-oxidizing and sulfate-reducing aerobic bacteria VKM V-458 and VKM V-1388
A scoping review of insomnia treatments for people living with HIV
Authors: Miranda Joyal , Sidani Souraya , Côté Jose , Fredericks Suzanne
Published: April 2021

Abstract

To date, little is known in terms of viable treatments for insomnia in people living with HIV. The primary aim of this scoping review is to identify non-pharmacological treatments for insomnia in people living with HIV (PLWH). A framework by Arksey and O’Malley was used to guide the conduct of this scoping review. Seven studies were identified. Three of the studies used cognitive-behavioral type of treatments versus physical or alternative types of treatment. The most effective treatments with the largest effect sizes were found to be cognitive-behavioral treatments for the sleep outcomes of sleep quantity (1.11-1.91) and sleep quality (1.11-1.91). This review found that cognitive behavioral interventions were found to be the most effective treatments for insomnia for PLWH. Further research would benefit from larger sample size studies in addition to focusing on the determinants of insomnia in PLWH in order to further provide a treatment that is focused on the needs of PLWH.