bluuebunny/crossref_metadata_2025 huggingface dataset:
Adaptation des forêts françaises aux changements climatiques : discours et jeux de pouvoir
Authors: Blondet Marieke
Published: February 2022

Les forestiers français sont de plus en plus conscients des effets du changement climatique qui va très certainement affecter les forêts dont ils s’occupent à l’avenir. Une option sylvicole pour adapter la forêt française à cette menace est de transformer par plantation la composition des peuplements forestiers. Les représentants au niveau national des propriétaires de bois sont particulièrement porteurs de cette idée. Pour autant, cette option adaptative ne rencontre pas de consensus, notamment parmi les propriétaires et gestionnaires privés du nord-est de la France. Basé sur une enquête ethnographique, cet article tente d’expliquer l’écart existant entre le point de vue de ces détenteurs locaux de forêts et leurs représentants nationaux. Le discours porté au niveau de l’État serait une construction virtuelle de la réalité, intentionnellement construite dans le cadre d’un rapport de force externe et interne, entre, d’une part, les représentants des propriétaires et d’autres acteurs au niveau national, et, d’autre part, entre forestiers privés, eux-mêmes porteurs de manières concurrentes d’envisager la gestion forestière.
Mieux comprendre la complexification de l’occupation de l’espace pastoral au Ferlo. Un prérequis pour une bonne gestion des ressources naturelles
Authors: Ka Abdou , Perrotton Arthur , Cissé Birane , Goffner Deborah
Published: February 2022

Dans le contexte des changements globaux, le pastoralisme se positionne comme un système de production pertinent dans les zones semi-arides. Face aux menaces qui pèsent sur ces systèmes, il est nécessaire de penser des règles d’aménagement et de gestion flexibles, ancrées dans les réalités socio-écologiques locales. Cet article présente un travail conduit dans le Ferlo (Zone sylvopastorale), habité principalement par des pasteurs peuls. Depuis plus d’un demi-siècle, le Ferlo est le théâtre d’incessantes politiques et projets de développement accumulés autour de la gestion des ressources pastorales et de la lutte contre la désertification. Nous défendons l’idée que leurs difficultés à résoudre les défis socio-écologiques du Ferlo tiennent en partie du fait qu’ils reposent sur un narratif devenu obsolète, celui d’une brousse en libre accès utilisé par une population éparse. En nous appuyant sur un travail de terrain et sur l’analyse de documents, nous proposons une mise à jour de ce narratif, en décrivant la transition socio-écologique du Ferlo depuis le système historique du hurum vers un système contemporain caractérisé par une grande complexité foncière, l’atomisation des habitations, la disparition progressive des espaces communs et la compétition pour l’accès aux ressources. Au fil de l’article nous attirons l’attention sur les potentielles conséquences du décalage entre le Ferlo tel que perçu par les pouvoirs publics et les agents de développement d’un côté, et la manière dont il est de facto utilisé par les pasteurs peuls : capture légale de l’espace par l’État, montée des tensions entre usagers du territoire et pression sur les ressources naturelles.
On Mechanism of Weld Crystallization in Arc Welding with Controlled Actions
Authors: Razmyshlyaev Alexander D. , Ahieieva Marina V.
Published: February 2022

A review of publications on metallurgical and foundry production showed that many authors, when analyzing the properties of liquid metals and alloys, proceed from the concept of their cluster structure. The cluster structure of a liquid is a hypothesis, but it is confirmed by studies of diffraction of X-rays, electrons and neutrons reflected from its surface. This paper considers the existing concept that a cluster is a crystal-like concentration of atoms. Around the clusters there is a weakened zone, which consists of disordered atoms, the volume of which does not exceed 3 ... 5%, and this provides the fluidity of many melts. The authors of the publications have achieved success in explaining the forming structure of ingots, proceeding from the cluster mechanism of the crystallization of liquid metals and alloys. The authors of this work suggested that the superheated liquid metal in the head of the bath, which has smaller clusters, moves under the action of magnetic fields to its tail, and provides refinement of the weld metal structure during welding with the action of a control transverse magnetic field.
Modeling the Influence of Mechanical Control Impacts on the Distribution of the Temperature Field in the Base Metal during Surfacing with a Strip Electrode
Authors: Lavrova Elena , Ivanov Vitaliy , Il’yaschenko Dmitriy P.
Published: February 2022

Modeling of the temperature distribution during electric arc surfacing with a strip electrode is carried out in relation to the design scheme of a semi-infinite body. Also, in the work, the temperature distribution was calculated when a flat layer was heated by a linear source, which made it possible to compare the temperature distribution data without and taking into account the heat release conditions at the product boundaries. The simulation results showed that the control of heat input into the base metal when using mechanical control actions makes it possible to reduce the overheating of the weld pool, reduce the area of the melting isotherm, and reduce the cooling rate of the heat-affected zone. By calculation, the previously determined optimal range of values of the frequency of control actions of 40÷60 Hz was confirmed, which makes it possible to ensure the minimum depth of penetration of the base metal and obtain a favorable structure in the heat-affected zone, prone to the formation of a coarse-grained structure.
DIRITTO E NUOVE TECNOLOGIE DELLA COMUNICAZIONE
Authors: Ferrari Vincenzo
Published: February 2022

NEW TECHNOLOGIES – LAW – RECIPROCAL IMPACT – POTENTIALS – DYSCRASIAS
This paper discusses the relationships between law and new communication technologies from a socio-legal perspective, with a focus on artificial intelligence and the access to Big Data. The author contends that, on the one side, such innovations have brought about a revolution in information about law, in that they make legislative processes easier, offer new keys for the interpretation of precedents, enable the administration’s inner machineries to be inspected or future deviances to be predicted and, no less important, impose a steady reorganization of work in all sectors, including that of the legal professions. On the other side, much still remains to be done in the field of the formation of law, even though experiments with ‘smart’ legislation and ‘smart’ contracts, as well as automated judicial decision-making, are already online. Here a dyscrasia still exists between legal and algorithmic languages. Law operates as a conditional action programme, based on the transmission of signs to be interpreted and the link between a factual premise and a deontic consequence (“if X, then Y”), as well as on the activity of “a third actor”, whether law-giver, administrator or judge, “who doubts and decides”. Conversely, learning machines operate by transmitting pre-packaged signals that exclude the “third actor’s” interpretative and decision-making activity, especially delicate when addressed to understanding the motivations of human action or facing an unforeseeable future. The law’s complexity therefore seems to resist algorithmic regulation and the question, nowadays, is whether technologies will adapt to the law and leave room for human intervention, or whether they will impose a kind of simplified law, in which human intervention will be annulled or drastically reduced.
TOPOGRAFIA, DEMOGRAFIA E (DIS)UNITÀ POLITICA DELLA CITTÀ: CONSIDERAZIONI SU ARIST. POL. 5.3.1303B 7-12*
Authors: Loddo Laura
Published: February 2022

The aim of this article is to offer a comprehensive analysis of Aristotle’s reflection on the stasis dia tous topous, i.e. the instance in which civic conflict is explained as a consequence of a particular layout of the territory that impedes the political unity of the polis. We first analyse the available data on the episodes of stasis that involve the cities in Aristotle’s example, in order to estimate the degree of congruence between each episode of stasis occurred in these cities and Aristotle’s passage on the stasis dia tous topous. Second, we focus on the example concerning Athens, which, it is argued, illustrates the socio-political heterogeneity of a polis, which culminates in the correspondence between residence and political orientation. Hence there is no reason to see in the example of Athens a precise reference to an actual civil war but rather to some cornerstones of Aristotle’s thought, i.e. the connection between the fleet and democracy, and the coincidence between individual lifestyle and membership in a certain socio-political group.
Evidence for Economic Evaluations of Athletic Trainer Services
Authors: Peterson Collin , Li Tao
Published: February 2022

Objective

Literature suggests athletic trainers (ATs) can help address health needs in a more affordable way across a variety of settings. We aimed to assess if AT services were cost effective when compared with no AT services or services by other health providers.

Data Sources

We performed a key word search in 5 databases: MEDLINE (FirstSearch), PubMed, Web of Science, SPORTDiscus, and Google Scholar. We also conducted a generic web search to identify any informal sources that met the eligibility criteria.

Study Selection

We used a comprehensive list of terms to search economic evaluation studies on ATs. Studies that met all the following criteria were included: economic evaluation studies on AT services, original studies written in English, and studies published in the last 10 years (2011 to present). Studies that examined either only costs or only benefits of AT services were excluded.

Data Extraction

We extracted data using a predefined checklist that included major components of economic evaluation and data regarding athletic training practice setting.

Results

We extracted 5 articles in our review, most of which supported the use of AT services as economically viable. The practice settings studied in the articles were 2 high school settings, 2 military settings, and a community outreach program that included several practice settings. The authors of only 1 study used a standard economic evaluation method and took insurance status into account.

Conclusions

Our review showed that AT services can be a cost-effective option for addressing health care needs. However, the literature remains sparse, and an overall lack of consistency existed in outcome measures, analytical methods, and reporting practices, which reduced the comparability across studies. Authors of future studies on this topic should address these limitations, which will provide critical economic evidence to inform decision making on investing in AT services across various settings.
Interprofessional and Collaborative Practices of Athletic Trainers in the Secondary School Setting
Authors: Meskimen John , Kirby Jessica L. , Drescher Matthew J. , Eberman Lindsey E.
Published: February 2022

Context

Interprofessional and collaborative practice (IPCP) is thought to improve comprehensive patient care but is often hindered by a lack of knowledge about the scope of training of other providers, inadequate communication, and structural barriers. The secondary school setting may pose unique challenges to IPCP.

Objective

To investigate the perceptions and practices of secondary school athletic trainers (SSATs) regarding IPCP.

Design and Setting

Cross-sectional, Web-based survey.

Patients or Other Participants

Secondary school athletic trainers (N = 379, age = 35 ± 11 years, experience = 12 ± 10 years).

Intervention(s)

We used a modified version of the Clinician Perspectives of Interprofessional Collaborative Practice Survey, a validated survey consisting of 6 sections representing 6 different constructs (48 items) and 4 open-ended response questions focused on perceived challenges, resources, drawbacks, and benefits relative to IPCP.

Main Outcomes Measure(s)

We calculated descriptive statistics, including a composite mean, to characterize the scores on each construct. We analyzed the open-ended, qualitative data using general inductive coding and used multiple analysts and auditing to establish trustworthiness.

Results

We contacted 4666 SSATs to complete the survey. We had 507 (10.9%) SSATs respond, and 379 (74.8%) completed the survey in its entirety. Secondary school athletic trainers agreed with or marked that statements were either always true or sometimes true for all constructs. Three main themes emerged from the open-ended data: (1) communication, (2) infrastructure, and (3) learning. Communication was deemed critical, and having access to shared information improved collaboration. Secondary school athletic trainers were often responsible for initiating communication. A strong infrastructure that enhanced access to other providers, incorporated parents, and improved efficiency helped support IPCP. Interprofessional and collaborative practice resulted in learning between providers, including roles and responsibilities, which yielded stronger trust and respect. Interprofessional and collaborative practice resulted in idea sharing and potentially improved patient outcomes.

Conclusions

Although SSATs described regular use of IPCP in practice, barriers exist that diminish IPCP including communication, infrastructure, and learning between professions.
Angiodysplasia and its correlation to serum magnesium level in patients with chronic kidney disease stage 5D under maintenance hemodialysis
Authors: Ibrahim Mohamed E. , El Shahawy El Metwally L. , Hanna Allah Sameh B. , Ashour Mahmoud
Published: February 2022

Background

Angiodysplasias (ADs) are vascular ectasias not associated with any familial syndrome, cutaneous lesions, or systemic vascular disease. They are the most common vascular malformations of the gastrointestinal tract in the general population with a prevalence of 0.82%. Most AD occurring in the general population are detected in patients older than 60 years of age, although presentation in patients with chronic kidney disease (CKD) can be earlier. The aim was to correlate AD with serum magnesium level in patients with CKD stage 5D under maintenance hemodialysis.

Patients and methods

This study included 60 patients with CKD stage 5D on maintenance hemodialysis. Upper and lower gastrointestinal tract endoscopy was done for all patients in Kafr Elsheikh University Hospital in a cross-sectional ‘prospective study,’ and all laboratory investigations were done.

Results

The mean age of patients with CKD was 49.03±14.66 years. There was a statistically significant increase in Mg among patients with AD and those without AD. This study showed that there were statistically significant negative correlations between Mg and parathyroid hormone.

Conclusion

AD is one of the common causes of gastrointestinal bleeding in all population and is the most common cause of bleeding in patients with CKD. Hypermagnesemia is associated with AD in patients with CKD.
Trends of biowaste generation in hemodialysis units under the hub-and-spoke model
Authors: Cherain Abhilash , Yadla Manjusha
Published: February 2022

Background

To assess the trends of biowaste generation under an unique model of hemodialysis services -Hub and Spoke model.

Materials and Methods

Biowaste generation including the liquid, solid, recyclable and nonrecyclable wastes are calculated per session of dialysis and tehn calculated per number of sessions in each centre. Biowaste was weighed accordingly using wighing machines normalised to the weight of the material weighed.

Results

Total waste generated per session was 1007 gm in a maintenance dialysis session and 528 gm in an acute dialysis session. Of this, plastic waste was 847gm and 382 gm in respective units, nonplastic waste was 146 and 160 gm respectively. Based on the number of session in acute unit and maintenance unit, total waste generated in acute unit per day was 18.48 kg and 12.22 kg (plastic, nonplastic) and in maintenance unit, it was 65.45 and 54.05 kgs.

Conclusions

There is high generation of biowaste in dialysis units with 280–295 tonnes/year. Its the need of hour to plan for green dialysis by bringing in eco-friendly recyclable biowaste.
Association of Down Syndrome with Major Congenital Anomalies in the North Indian Population
Authors: Bisht Kanchan , Verma Rakesh Kumar , Kumar Navneet , Singh Shakal Narayan , Bhandari Baibhav
Published: February 2022

Context:

Down syndrome (DS), which usually occurs due to an extra chromosome 21 or a partial trisomy, is the most common genetic cause of intellectual disability. The affected individuals usually present with characteristic clinical manifestations and are seen to be associated with various systemic defects.

Aim:

The aim of our study was to determine the major congenital anomalies associated with DS in the North Indian population.

Methods:

Blood samples of 51 children (0–10 years) who were screened for the suspicion of DS were collected. Karyotyping was conducted. Data were analyzed using the Statistical Package for the Social Sciences (SPSS) software version 21.0.

Results:

Out of the 51 suspected participants, karyotypes could be successfully obtained only for 40. Among these 40 participants, karyotypes of 35 were confirmed to be DS. Of these 35 confirmed cases, 21 (60%) were found to be associated with at least one major congenital anomaly, of which cardiac anomalies (34.2%) were most common, followed by gastrointestinal tract and genitourinary anomalies (11.4% each). Central nervous system and musculoskeletal anomalies constituted 5.7% each. Mosaic variant of DS was found to be least associated with congenital anomalies.

Conclusion:

The patients with DS should be carefully examined for systemic anomalies. Most cases are usually associated with at least one congenital anomaly.
Effect of Pedometer-Based Walking on Depression, Anxiety, and Insomnia among Medical Students in a Government Medical College
Authors: Sharma Shivangi , Rani Meenu , Jain Sanjay , Sharma Lokendra
Published: February 2022

Context:

Pedometer is a popular tool to measure physical activity and it is easy to use.

Objectives:

The impact of pedometer-based walking on insomnia, anxiety, and depression among medical students was evaluated in this study.

Methods:

A total of 120 2nd-year MBBS students were randomly assigned to two groups (n = 60 in each group). Anxiety, insomnia, and depression levels were assessed using Beck's depression inventory, Beck's anxiety inventory, and Likert sleep scale questionnaire at different time durations. Data were analyzed using the independent t-test, Chi-square, and repeated measures tests.

Results:

We noticed 22.1% reduction in depression score in the intervention group (P = 0.009). Anxiety score was reduced to 19% among the intervention group students (P = 0.03). Sleep quality improved in students of the intervention group as compared to the control group (P < 0.001).

Conclusion:

A walking training programme can be considered to manage depression, anxiety, and insomnia in medical students.
Tuberculosis Notification
Authors: Thangaraj Prabha , Hemalatha Kumarasamy
Published: February 2022

Context:

The framework for tuberculosis (TB) notification is one of the components of the World Health Organization's End TB strategy. Notification is essential for estimating the true burden of TB and its control in community which is currently lacking in the private health sector.

Aims:

The objectives are to identify awareness, willingness, barriers, and preferred methods of TB notification among private practitioners (PPs) in Trichy, South India.

Methods:

A descriptive cross-sectional study was conducted among 152 doctors working in the private sector and having at least 1 year of clinical experience using nonprobability sampling. A semi-structured, pretested questionnaire was used to obtain details about the general profile, awareness, and willingness regarding TB notification, as well as factors that facilitate and hinder it.

Results:

Among PPs, 90.7% referred TB cases/suspects to other health facilities and 71.7% were aware that TB notification is mandatory. Only 52.6% and 38.2% were ready to provide the patients' Aadhaar number and bank account details respectively during notification. The most common barriers for notification were: not being aware about the notification procedure (50.7%), lack of time (32.2%), process being tedious (29.6%) and difficulties in getting information from patients (25.7%). Mobile SMS/App/call (74.3%) were preferred by PPs over notification through online (32.2%) and government health staff (26.3%).

Conclusions:

Although three-fourth of the practitioners were aware and willing to notify TB, more than half of them were not aware about the notification procedure. Improving the awareness on the techniques for notification could motivate PPs to notify TB.
The current clinical role of optical coherence tomography angiography in neuro-ophthalmological diseases
Authors: Bilici Serdar , Duman Reşat
Published: February 2022

After the revolutionary effect of optical coherence tomography (OCT) on ophthalmology practice, recent OCT-based technology OCT angiography (OCT-A) also has rapidly gained a wide clinical acceptance. OCT-A is a noninvasive, depth-resolved imaging tool for the evaluation of retinal vascular changes. Since its introduction, the understanding of retinal vascular diseases, pacychoroid spectrum diseases, and other diseases have been enriched in many ways. More importantly, OCT-A provides depth-resolved information that has never before been available. The whole spectrum of neuro-ophthalmological diseases shows consistent peripapillary and macular capillary changes with structural and functional correlation. The superficial and deeper retinal and choroidal vasculatures are affected depending on the nature of the disease process. Therefore, OCT-A play an important role in the diagnosis and management of optic nerve-related diseases as well. In this review, we summarized existing literature on the use of OCT-A in neuro-ophthalmological diseases such as arteritic anterior ischemic neuropathy, nonarteritic anterior ischemic neuropathy, papillitis, papilledema, multiple sclerosis. Currently, OCT-A has an important position as a useful, noninvasive tool in the evaluation of neuro-ophthalmologic diseases; however, OCT-A has several limitations regarding its technical capabilities in challenging neuro-ophthalmic cases. With the improvement in the technical capacity of OCT-A, it will have a more important place in the diagnosis and follow-up of neuro-ophthalmological diseases in future.
Prevalence of iron deficiency in the first trimester in nonanemic pregnant women at Tanta delta of Egypt
Authors: Shaat Emad A.A. , El-Sayed Mahfouz Amal , Dawood Abd El Ghaffar Saeed , Al Bohoty Shereen B.
Published: February 2022

Background

Throughout gestation, iron requirements increase significantly to support a growing red cell volume, a developing fetus, and a developing placenta, and also any predicted or unplanned blood loss after birth, especially with cesarean delivery.

Aim

The scope of this study was to evaluate the occurrence of iron deficiency in the first trimester, in nonanemic pregnant women, and its relation to the outcome of pregnancy.

Patients and methods

This study was conducted on 100 pregnant women in the first trimester attending the Obstetric Department at Tanta University Hospital duration of research from October 2019 to October 2020, 4 ml of venous blood sample was collected, 2 ml was collected on EDTA vacutainers for complete blood picture, the other 2 ml was collected on plain tube for estimation of maternal serum iron, ferritin, centrifugated at high speed of 2000 rpm, and serum was stored at −20°C until analysis.

Results

This study was done on 100 cases to evaluate the frequency of iron deficiency in the first trimester, in nonanemic pregnant women and its relation on pregnancy.

Conclusion

Iron deficiency in gestation is indeed a common problem, according to this study, and it is largely linked to greater maternal per-partum morbidity. Pregnant women should really be encouraged to begin antenatal care as soon as possible, so that their hematological status can be adequately optimized through regular oral iron intake and/or parenteral iron supplementation ahead to labor and delivery, avoiding any need for blood transfusion.
Monopolar microelectrodes versus radiofrequency in posterior cordotomy for bilateral vocal fold paralysis
Authors: Fayed Mostafa T.A. , Shehata Emad M. , Aglan Yasser I. , Albirmawy Osama A.
Published: February 2022

Background

Bilateral abductor vocal fold paralysis (BAVFP) is an uncommon condition with potentially significant negative effects on breathing and quality of life. It presents as one of the most difficult problems for the laryngologist. Located at the crossroads of the airway and food passages, the larynx provides three important functions: airway protection, respiration, and phonation, which are affected by paralysis of one or both vocal folds.

Aims

The aims of treatment of BAVFP are to provide adequate airway, preservation of voice quality, and laryngeal competence.

Patients and methods

This is a randomized, prospective clinical trial that was carried out on 20 patients with BAVFP, who were subjected to endoscopic/assisted microscopic posterior cordotomy at the Department of Otorhinolaryngology, Tanta University Hospital. The study was carried out from first February 2019 till April 2020. The patients were allocated into two groups: group A patients were operated with radiofrequency. Group B patients were operated with monopolar microelectrodes. Grade of dyspnea, exercise tolerance test, voice handicap index-10, MD Anderson Dysphagia Inventory, and aspiration were evaluated preoperatively and 2 weeks and 3 months postoperatively.

Results

Both techniques were successful in postoperative glottic chink, exercise tolerance, dyspnea, and aspiration. There was a significant difference (P=0.007) between group A and group B at 3 months postoperative voice handicap index-10.

Conclusion

Both techniques could be used as an easy and cheap alternative in performing posterior transverse cordotomy.
Role of gray-scale ultrasound, Doppler, and ultrasound elastography in the evaluation of nodular goiter
Authors: Zaki Reem A. , Shehata Emad M. , Elsaed Haitham H. , Hegazy Hassan M.
Published: February 2022

Background

Thyroid nodules are very common. Most nodules are benign, with less than 5% of them being malignant. High-resolution ultrasound (US) is sensitive in detection of thyroid nodules, enabling differentiation of solid and cystic lesions. Conventional US does not provide information regarding hardness of the nodule and this is often the role of Ultra Sound Elastography (USE). US elastography was developed to work out tissue stiffness and strain information noninvasively.

Aim

The aim was to judge of the accuracy of gray-scale US, Doppler, and US elastography in the diagnosing of nodular thyroid diseases.

Patients and methods

The study included 20 consecutive patients with a clinically diagnosed multinodular goiter presented to Otorhinolaryngology OutPatient Clinic. All patients have been subjected to detailed history taking, complete Oto Rhino Laryngology (ORL) head and neck examination, complete general examination, and routine investigations for general anesthesia. Radiological imaging using conventional US and real- time US, Doppler study of the whole thyroid gland by the same probe, and elastography. Suspicious nodules were subject to Fine Needle Aspiration Cytology (FNAC) and surgery was done by ORL surgeon in the ENT department.

Results

In this study, 20 cases were included from which 19 cases were benign and only one case was malignant. There was a high statistical significance in-between the US classification and elasticity score with P less than 0.001, and high statistical significance in-between Doppler signs and elasticity score with P less than 0.001.

Conclusion

US elastography may be a promising technique that combined with other US modalities is straightforward and rapid to perform and might help to spot thyroid nodules that are likely to be malignant.
Mayer-Rokitansky-Küster-Hauser Syndrome
Authors: Muhammad Isa Hassan , Ismail Anas , Yusuf Murtala , Hassan Nuhu
Published: February 2022

The association of renal abnormalities with Mullerian anomalies is well recognized and assessment of the renal tract forms part of the routine assessment of patients presenting with Mullerian anomalies. This is a case of a 20-year-old nulliparous female who had abdominopelvic ultrasonography on account of primary amenorrhea showing bilateral ectopic kidney fused in the pelvis, complete absence of the uterus, the cervix, and the upper part of the vagina; while normal sized ovaries seen. These were confirmed on computed tomography (CT). Renal CT angiograms showed a renal artery arising anteriorly from the abdominal aorta just above its bifurcation into the common iliac arteries. An interesting feature in this patient was the existence of the median sacral artery in the blood supply of the fused pelvic kidney. No skeletal anomalies were visualized in dorsolumbar spine or pelvis.
Case report on the management of failed tunneled hemodialysis catheter insertion
Authors: Raji Yemi Raheem , Osobu Babatunde Ebenezer , Abiola Busayo Isaac , Efuntoye Oluwafemi Ololade , Adekanmi Ademola Joseph , Ajayi Samuel Oluwole , Adeyinka Abiodun Oludotun
Published: February 2022

Hemodialysis vascular access is critical to ensuring adequate hemodialysis sessions. Tunneled internal jugular vascular (IJV) access is a type of intermediate access that has become increasingly useful in low- and middle-income countries, where there are not many vascular surgeons with expertise in arteriovenous fistula creation. We presented a 69-year-old male who had complicated IJV catheter insertion, with the catheter located in the pulmonary vascular bed of the left lung and associated left-sided hemothorax. He was managed by multidisciplinary team of nephrologists, radiologists, and cardiothoracic surgeons, who removed the catheter under fluoroscopic guidance without any complication or need for open thoracotomy. The case highlighted the utility of fluoroscopy in aiding hemodialysis catheter insertion, removal, and management of its complications.
Evaluation of effluent post-treatment by slow filtration and adsorption with activated carbon produced from spent coffee grounds in surfactant removal in sewage treatment
Authors: Ribeiro Marcelo Pinheiro , Botari Alexandre
Published: February 2022

Environmental pollution is a worldwide concern, especially when caused by sewage dumping into water bodies. Many substances are present in industrial or domestic wastewater, causing contamination in superficial water collection. Surfactants stand out for being widely used both industrially and domestically. The use of detergents and many types of surfactants was increased during the Covid-19 pandemic period, a fact observed in the levels in the effluent sample analysis from a Sewage Treatment Plant (STP) - Vila City around 21 and 39 mg L-1  in this period. This work evaluated the surfactant concentrations in the primary and secondary treatment units of the Vila City STP, in the city of Paranavaí-PR.-Brazil. In addition, the use of a post-treatment by slow sand filtration and adsorption by activated carbon produced from spent coffee grounds in the complementary removal of surfactants was proposed. A mixed bed with sand and activated carbon columns was made on a pilot scale, and filtration/adsorption runs were performed simulating slow filtration with rates of approximately 15 m3 m-2 day-1. The parameters used for the efficiency removal evaluation in a pilot plant run were: turbidity (NTU) and surfactant concentrations. The removal of surfactant concentrations was about 9% and 7% in the Upflow Anaerobic Sludge Bed reactors (UASB-RALF) and in the secondary treatment, respectively, at the STP – Vila City units. In the post-treatment proposed by filtration/adsorption, bed columns on a pilot scale plant obtained a reduction of approximately 94% in terms of turbidity (NTU) and 95% in terms of surfactant removal.

Keywords: activated carbono, coffee poder, effluent, surfactants.
SNSF Datastory - Gender monitoring (part 2): the proportion of women decreases with each step up the career ladder
Authors: Isler Simona , Oliver John
Published: February 2022

In Switzerland, more women than men study at universities. Yet women professors are in the minority. This imbalance is also reflected in the grant applications submitted to the SNSF.
Surface retention of polyurethane and acrylic coatings on impregnated spruce wood (Picea abies Karst) and comparison with some wood preservatives
Authors: Bahchevandziev Konstantin , Mihajlovski Nikola
Published: February 2022

The natural spruce wood has low resistance against biological degradation and weather effects, so further protection is required, up to meeting the durability requirements for wood used in exterior classes. According to the wood preservatives standards, coatings as water repellents belong to the group OS (organic solvent) preservatives. The coatings have a water-repellent function, and they are not toxic, so these advantages make them usable like impregnation material.  The objective of this work is impregnation of the spruce wood (Picea abies Karst) using the “Double vacuum process” with coating material based on polyurethane and acrylic isocyanate resins and determinate the coatings quantity in wood. The impregnation efficiency is expressed through the retention. The coatings retention is compared with the minimal standard prescribed retention of the preservatives, most frequently used, namely creosote, copper chrome arsenate (CCA) and waterborne copper-rich systems like copper azole (CBA-A, Thanalite E), to show the efficiency of the applied double vacuum process. The coating retention is not significantly different from the minimum prescribed retention of creosote and amounts 118 - 149 kg/m3 or 32 to 38 times higher than the recommended retention of CCA or CBA-A for wood protection in the exterior use. The polyurethane and acrylic wood coatings can be successfully applied for wood impregnation purposes. Key words: impregnation, retention, spruce wood, polyurethane coatings, acrylic isocyanate coatings.
Los Efectos Negativos del Poder y la Teoría de Juegos
Authors: Méndez Calderón Margelis Coromoto
Published: February 2022

Desde el enfoque funcionalista las relaciones de poder generan en ocasiones efectos negativos donde convergen y se afloran sentimientos de rechazo hacia el líder, cuando existen intereses contrapuestos. Desde un orden interpretativo y crítico se analizan los efectos negativos del poder, bajo la perspectiva de la teoría de juegos, en el marco de una investigación cualitativa de tipo documental. Se concluye que esta teoría es vista como un desafío para la formulación de modelos y técnicas de acción en situaciones de conflicto, debido a que estudia las estructuras estratégicas que gobiernan la toma racional de decisiones, bajo un contexto característico de interacciones sociales. De esta forma, se vislumbran los efectos negativos del poder, los cuales pueden ser descifrados, codificados y controlados. En síntesis, la formulación de la teoría de juegos sirve para legitimar los supuestos subyacentes desde un punto de vista científico, ya que aporta resultados cuantitativos de comparación y, al mismo tiempo, elude las decisiones que se puedan tomar desde una perspectiva meramente subjetiva.
SISTEM INFORMASI PENDAFTARAN SISWA SMK NEGERI 1 PERCUT SEI TUAN SECARA ONLINE BERBASIS WEB MENGGUNAKAN BAHASA PEMROGRAMAN MY SQL
Authors: Maulana Rizky , Simon Jhon , Yasir Amru
Published: February 2022

ABSTRAK Teknologi dan Informasi dewasa ini sangat berpengaruh terhadap dunia bisnis dan pendidikan. Dunia pendidikan dituntut untuk dapat menciptakan Sumber Daya Manusia (SDM) yang mampu beradaptasi dengan lingkungan pekerjaan serta memiliki inisiatif dan kreatif tanpa mengabaikan ketaqwaan seiring dengan perkembangan dan kemajuan  zaman. Sistem penerimaan siswa baru seringkali menimbulkan beberapa permasalahan diantaranya sering terjadi kesalahan dalam pengolahan data karena banyaknya data calon siswa pendaftar yang harus di olah, sulitnya pencarian data siswa pendaftar karena data dalam bentuk tumpukan formulir, tidak efisiennya waktu dalam proses penyeleksian dengan melihat dan mengecek satu persatu persyaratan formulir pendaftaran calon siswa, dan informasi yang di peroleh calon siswa tidak cepat karena harus datang ke sekolah langsung. Kata Kunci : Teknologi, Informasi, penerimaan Siswa
Prueba
Authors: Prueba Usuario
Published: February 2022

Resumen
Determinant Yield To Maturity of Banking Sector Bonds Listed On The Indonesia Stock Exchange For The Period 2015-2020
Authors: Riani Syamsu Elfira , Endri Endri
Published: February 2022

This study identifies the factors that affect the Yield to Maturity of Banking Sector Bonds Listed on the Indonesia Stock Exchange for the 2015-2020 Period. The population in this study are banking sector companies listed on the Indonesia Stock Exchange for the 2015-2020 period. The sampling technique was purposive sampling which obtained as many as 11 companies consisting of 22 corporate bonds which were used as  research objects. The dependent  variable in this study is Yield to Maturity (YTM) while the dependent variable is Interest Rate (IRATE), Exchange Rate (KURS), Leverage (DER), Liquidity (CR) and Firm Size (SIZE). The research analysis method used is descriptive statistics and panel data regression Random Effect Model (REM) which is processed using E-VIEWS 12. The purpose of this study is to analyze the influencing factors and their implications for the yield to maturity of corporate bonds, based on their respective relationships. variable or simultaneously. The results showed that partially the Interest Rate variable had a significant negative effect on Yield to Maturity and Exchange Rate had a significant positive effect on Yield to Maturity, while the Leverage, Liquidity and Firm Size variables had no effect on Yield to Maturity
Determinan Kesuksesan Sistem Informasi Core Banking System dengan Variabel Pendekatan Model Delone dan Mclean
Authors: Basyir Ashar , Safitri Leli
Published: February 2022

PT Bank Perkreditan Rakyat (BPR) Hasamitra Jawa Barat merupakan perusahaan jasa yang bergerak dibidang keuangan/pembiayaan yang berskala menengah. Penelitian ini berusaha mengkaji dan merumuskan apakah secara parsial dan simultan variabel-variabel yang terdiri dari kualitas sistem (system quality), kualitas informasi (information quality), kualitas layanan (service quality), penggunaan informasi (use), kepuasan pemakai (user satisfaction) dan manfaat (net benefit) berpengaruh dalam menentukan kesuksesan penerapan Core Banking System pada PT Bank Perkreditan Rakyat (BPR) Hasamitra Jawa Barat. Sampel yang digunakan dalam penelitian ini sebanyak 18 responden dengan teknik pengambilan sampel adalah slovin yang dilakukan dengan cara ukuran populasi dibagi dengan 1 (satu) ditambah dengan ukuran populasi dikali dengan kelonggaran ketidaktelitian yang ditoleransi dipangkat dua. Sementara, data yang terkumpul dianalisis dengan menggunakan uji validitas, uji reliabilitas. Sedangkan untuk menganalisis data digunakan analisis skal likert dan uji regresi linear berganda. Uji hipotesa menggunakan uji T hitung, F hitung dan koefisien determinasi (R2). Hasil dari analisis dan juga pembahasan, bahwa variabel kualitas sistem (system quality) dan manfaat (net benefit) secara parsial berpengaruh signifikan terhadap kesuksesan sistem informasi Core Banking System di PT Bank Perkreditan Rakyat (BPR) Hasamitra Jawa Barat. Sementara, Penggunaan Informasi menjadi satu-satunya yang mempunyai pengaruh negatif terhadap kesuksesan sistem informasi Core Banking System. Akan tetapi, variabel kualitas sistem (system quality), kualitas informasi (information quality), kualitas layanan (service quality), penggunaan informasi (use), kepuasan pemakai (user satisfaction) dan manfaat (net benefit) secara bersama-sama (simultan) berpengaruh terhadap kesuksesan sistem informasi Core Banking System di PT Bank Perkreditan Rakyat (BPR) Hasamitra Jawa Barat
Pemetaan Rencana Pola Ruang Terbuka Hijau Menggunakan AHP dan Gis untuk Kota Subulusalam
Authors: Fharaby Skar , Perwira Mulia Ahmad , Mardianta Anthoni Veery
Published: February 2022

Undang - undang no 26 tahun 2007 tentang penataan ruang secara tegas mengamanatkan 30% dari wilayah kota berwujud ruang terbuka hijau, 20% bersifat publik dan 10% bersifat privat.  Pengalokasian  ruang terbuka hijau  ini  ditetapkan  dalam  Peraturan  Daerah tentang Rencana Tata Ruang Wilayah (RTRW) Daerah yaitu Pemerintah Kota Subulussalam. Pemerintah Kota Subulussalam perlu secepatnya menempatkan masalah ruang terbuka hijau sebagai salah satu isu penting dalam pembahasan program pembangunan berkelanjutan. Tujuan dari penelitian ini adalah memberi tambahan literasi melalui perspektif yang berbeda dari sisi akademis terhadap kawasan lindung yang telah di tetapkan dalam RTRW Kota Subulussalam sebagai perwujudan pola ruang terbuka hijau yang sistematis dan realistis. Metode yang digunakan dalam penelitian ini adalah kuantitatif deskriptif. Dalam hal ini metode integrasi Analitycal Hierarchy Process (AHP) digunakan agar dapat mengambil keputusan yang rasional dari beberapa kriteria tersebut dan Geographic Information System (GIS) sebagai pendukung keputusan dalam penentuan lokasi serta menggambarkannya pada sebuah peta zonasi. Berdasarkan hasil penelitian didapatkan bahwa dari 5 kecamatan di Kota Subulussalam, Kecamatan simpang kiri merupakan kecamatan yang memiliki kebutuhan ruang terbuka hijau paling tinggi. Hal itu dikarenakan 91,86% wilayah kecamatan simpang kiri memiliki kategori tingkat kebutuhan ruang terbuka hijau sedang hingga sangat tinggi yang berlokasi di area lapangan beringin
Analysis of The Influence of Exchange, Inflation, Gross Domestic Product, Interest Rate, and The Amount of Money Circulation On The LQ45 Index In The Indonesia Stock Exchange Between 2016-2020
Authors: Nurmansyah Abdul Rahman , Thamrin Hakiman
Published: February 2022

The objective of this research was to analyze the short and the long-run relationship between five macroeconomics variables such as exchange rate, inflation, Gross Domestic Product (GDP), SBI rate, and money supply to examine their influence on the LQ45 stock price index. The data sample used in this study is monthly time series data from January 2016 to December 2020. This study used Vector Error Correction Model to analyze the problem. The result shows that in the short run (1 month ago), exchange rate, inflation, Gross Domestic Product (GDP), SBI rate, and money supply do not influence the LQ45 stock price index. In the long run, the exchange rate has positive inflation, SBI rate, and money supply negatively influence the LQ45 stock price index. Therefore, Gross Domestic Product (GDP) does not influence the LQ45 stock price index. The results of the Impulse Response Function and Variance Decomposition, SBI rate, is a variable that provides the most significant contribution to the LQ45 stock price index
Analisis Spasial Daerah Banjir Menggunakan Hec-Ras dan QGIS untuk Sub Das Babura
Authors: Sinurat Meinarty , Mulia Ahmad Perwira , Faisal Muhammad
Published: February 2022

Penelitian ini membandingkan antara prediksi kerugian banjir berdasarkan genangan hasil analisa curah hujan dan LIDAR dengan data kuisioner dengan masyarakat sekitar sungai Babura, Medan, Sumatera Utara, Indonesia. Adapun dalam proses penelitian penulis menggunakan data output yang dihasilkan oleh aplikasi He-cras yang selanjutnya dikonversi ke dalam bentuk shapefile dan dilakukan proses pemetaan spasial pada aplikasi QGIS. Dalam analisa QGIS digunakan plugin InaSAFE dimana plugin ini telah dikembangkan beberapa ahli di dunia, yang dalam pengembangannya telah bekerjasama dengan BNPB (Badan Nasional Penanggulangan Bencana) seperti yang dapat dilihat pada layout hasil outcome dari data analisa. Pada penelitian ini juga membahas prediksi jalur evakuasi serta kerugian banjir dari hasil genangan yang muncul baik dari data analisa pengukuran maupun kusioner di lapangan
Analisis Kondisi Banjir Di Kampus USU Berbasis Hecras dan Gis
Authors: Siregar Fatimah Almadinah , Mulia Tarigan Ahmad Perwira , Faisal Muhammad
Published: February 2022

Banjir merupakan salah satu bencana alam yang sering melanda berbagai daerah di Indonesia. Penelitian ini dilatarbelakangi oleh kondisi drainase di Kampus USU dengan luas lahan ±143 Ha terlihat tidak mampu menampung besarnya debit yang masuk baik disebabkan oleh daya tampung yang lebih kecil dari debit yang ada, kurangnya perawatan maupun sistem pengaliran dan pembuangan yang tidak sesuai lagi dengan lingkungan dan sebagainya. Studi ini bertujuan untuk mengetahui potensi genangan banjir di Kawasan Kampus USU dengan menghasilkan peta genangan banjir dari integrasi pemodelan antara software Hydrologic Engineering Center-River Analysis (HECRAS) dengan Geografic Information System (GIS). Dalam melakukan studi ini dilakukan pengumpulan data yang mencakup data topografi Kampus USU, data curah hujan dari BMKG, data tata guna lahan, data Topografi LIDAR. Metode Log Person III memenuhi syarat agihan distribusi frekensi curah hujan. Perhitungan debit banjir periodik menggunakan Metode Rasional untuk kala ulang banjir 1, 2, 5, 10, 20, 25, 50, dan 100 tahun. Dari hasil simulasi yang dilakukan terlihat daerah genangan yang terjadi di Kawasan Kampus USU. Beberapa lokasi banjir yang terjadi di Kampus USU adalah Jalan Universitas mulai dari depan Gelanggang Mahasiswa sampai persimpangan Jalan Dr. Mansur, Sepanjang Jalan Dr. Mansur, Fakultas Kesehatan Masyarakat, Fakultas Hukum
ТНЕ REFINING OF TITANIUM BY METHOD OF ZONE RECRYSTALLIZATION IN AN ELECTRIC FIELD
Authors: Kozhevnikov O.E. , Pylypenko M.M. , Pelykh V.M. , Virych V.D. , Kozhevnikova M.F.
Published: February 2022

The physical substantiation and an experimental study results of the application of zone recrystallization method in an electric field for the refining of titanium are presented. The elemental composition, microstructure and microhardness of the samples have been investigated. It is shown that refining process made it possible to significantly reduce the content of both metallic and gas-forming impurities. The oxygen concentration was reduced by 2.2 (from 0.033 to 0.015 wt.%), carbon – by 3.3 (from 0.01 to 0.003 wt.%), nitrogen – by 22 times (from 0.009 to 0.0004 wt.%). The purity of the obtained samples was characterized by a value of 99.95 wt.% by titanium content. The total amount of impurities had been reduced by a factor of 2.4 (from 0.12 to 0.05 wt.%).
ON MULTIPLE DISTILLATION OR CRYSTALLIZATION REFINING AT GIVEN YIELD
Authors: Kravchenko A.I. , Datsenko O.A.
Published: February 2022

A comparison is made of the Cn concentration of the impurity with a separation coefficient β < 1 in the product of n-fold refining by simple distillation or normal directed crystallization with the concentration of C1 impurity in the product of 1-fold refining with the same initial concentration and the same final yield G. The dependence Cn/C1 from the process parameters n, G, and β allowing to evaluate the feasibility of using n-fold refining instead of a single one is shown. The excess of Cn over the minimum achievable level increases with a decrease in β < 1 and with an increase in n and G.