bluuebunny/crossref_metadata_2025_split huggingface dataset:
Dynamic control of THz polarization modulation and multi-channel beam generation using a programmable metasurface
Authors: Ren Bin , Feng Yuxin , Tang Shuai , Wang Li , Jiang Huan , Jiang Yongyuan 
Published: May 2021

Polarization modulation and multichannel beam generation are crucial in multichannel communication and high-resolution imaging at THz frequency. In this work, we present a polarization-reprogrammable coding metasurface composed of VO2/Au composite concentric rings (CCRs). Owing to the phase-change property of VO2, the CCR is designed as a digital coding element for the polarization conversion. When VO2 remains insulator state at room temperature, the y-polarized incident wave is transformed into x-polarized wave, which can be regarded as digital state 0. When VO2 converts into metal state at critical temperature (68 °C), the polarization of reflected wave stays unchanged, corresponding to digital state 1. Any desired linear polarization state of reflected beam is achieved by taking advantage of different coding sequences in a programmable manner. Furthermore, by combining phase gradient with polarization coding states, we propose an anisotropic programmable metasurface to control the multi-channel reflected beams dynamically. By arranging distinct coding sequences, we show that the EM reflected beams can be manipulated flexibly. The proposed programmable metasurface paves new ways towards THz polarization manipulation, signal detection and information communication.
ESG strategies to deal with COVID-19 in a Brazilian public research company
Authors: Jesus Igor Rosa Dias de , Nascimento Petula Ponciano 
Published: May 2021

Goal: The paper aims to describe and discuss some practices and strategies that have been taken place in Embrapa Soils – a public research company that develops research in soil science – in order to deal with COVID-19 effects during the year of 2020.

Design / Methodology / Approach: We have chosen the ESG approach – Environmental, Social and Governance – as a theoretical background to analyze the strategies and practice we bring up on this paper. Information we have used were collected from internal management systems.

Results: Results show that the company have found many strategies to deal with COVID-19 in the three aspects of ESG. Positive results company have reached rely on leadership, processes adaptation and the strength of personal and professional connections among the employees.

Limitations of the investigation: Strategies and practices we present are limited to the scope of one singular company. ESG is a methodology that we have used a posteriori to contextualize and analyze the situation.

Practical implications: Learning and reinforcing the ESG approach have been an important tool for the company to think about itself beyond the boundaries of financial approaches. It has the potential to spread to other companies or public agencies that does not profit directly from its activities.

Originality / Value: Sharing strategies and practices companies have used to deal with covid-19 is important as a benchmarking activity for other companies as well as it makes a remarkable narrative of management in uncertain times that can be useful for present and future generations.
Tele-mentoring using augmented reality technology in healthcare: A systematic review
Authors: Bui Dung Trung , Barnett Tony , Hoang Ha T. , Chinthammit Winyu 
Published: May 2021

This systematic review aimed to identify how tele-mentoring systems that incorporate augmented reality (AR) technology are being used in healthcare environments. A total of 12 electronic bibliographic databases were searched using the terms “augmented reality”, “tele-mentoring” and “health”. The PRISMA checklist was used as a guide for reporting. The mixed method appraisal tool was used to assess the quality of the included experiments. The data were then analysed using a concept-centric approach and categorised primarily with regards to system performance and task performance measures. A total of 11 randomised controlled trials and 14 non-randomised designs were included for review. Both mentees and mentors assessed the system and task performance according to 25 categories. The feedback of mentees using AR tele-mentoring systems was generally positive. The majority of experiments revealed that the AR system was an effective tele-mentoring device overall and resulted in the effective performance of a procedure. Benefits included improvements in trainees’ confidence, task completion time and reductions in task errors and shifts in focus. However, the systems had limitations, including heaviness of the equipment, inconvenience, discomfort and distraction of wearing devices, limited battery life, the latency of video and audio signals and limited field of view.

Implications for practice or policy:

Health practitioners can apply AR technology to receive and follow real-time annotated instructions verbally and visually from remote experts.
Technical developers may consider improving AR devices in terms of lighter weight, larger field of view, more ergonomic design, more stable network connection and longer battery life.
Further AR-related experiments may need to explore AR tele-mentoring systems’ utility across healthcare environments with larger samples, real patient populations in remote settings, cost-benefit analysis and impacts on short- and long-term patient outcomes.
Connecting and Closed Geodesics of a Kropina Metric
Authors: Caponio Erasmo , Giannoni Fabio , Masiello Antonio , Suhr Stefan 
Published: May 2021

Abstract
We prove some results about existence of connecting and closed geodesics in a manifold endowed with a Kropina metric. These have applications to both null geodesics of spacetimes endowed with a null Killing vector field and Zermelo’s navigation problem with critical wind.
Transmission modes of COVID-19 disease pandemic in the light of ancient wisdom of Ayurveda medicine: a review
Authors: Joshi Namrata , Dash Manoj Kumar , Jayakumar Remya 
Published: May 2021

Abstract
Human-to-human transmission of the Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) occurs most often when people are in the incubation stage of the disease or are carriers and have no symptoms. SARS-CoV-2 transmission on different levels showed that the cold and dry climate, hot wind and relative humid wind, maximum wind speed, turbulent wind, intensified recirculating flow were causing transmission higher than factors. The role of environmental factors described in Ayurveda like air, water, soil, season, frequent earthquakes, sunlight exposure, frequent thunderstorm with lightening, and factors from arthropods were revalidated in perspective of COVID-19 transmission. The authors searched the information regarding epidemic diseases in Ayurveda textbooks. Pubmed, Science Direct, Wikipedia, Elsevier, Lancet, and Springer were approached for the latest knowledge relating to SARS-CoV-2 and COVID-19. Google Scholar search engine was thoroughly checked upon for scientific evidence regarding the Ayurveda drugs. Various environmental factors like soil, air, water, frequent earthquake disasters, wildlife animals, aquatic birds, space, inevitable disastrous factors, weather or seasonal hazards, violent thunderstorm with lightning, intermediate hosts, sunlight exposure etc. were considered for their role in the genesis of the disease. The Ayurvedic concepts behind the etiology and development of epidemics are the same as modern epidemiological theories. The mysteries of many aspects of the current pandemic might be deciphered by traditional medicine knowledge and thus adding upon to the integrative medicine concept.
Wet-cupping on calf muscles in polycystic ovary syndrome: a quasi-experimental study
Authors: Meyari Azam , Tansaz Mojgan , Ramezani Tehrani Fahimeh , Mokaberinejad Roshanak , Biglarkhani Mahdi , Bidhendi Yarandi Razieh , Fayaz Mohammad 
Published: May 2021

Abstract

Objectives
Current modalities for treating polycystic ovary syndrome (PCOS) are not curative and using them for a long period is associated with adverse effects. According to Persian Medicine recommendations, wet cupping on calf muscles can induce menstrual bleeding. In the present study, the effect of wet-cupping (traditional bleeding from capillary vessels) was assessed on menstrual cycles (as primary outcome), hirsutism, and laboratory manifestation of PCOS.

Methods
A quasi-experimental study was conducted from 2016/5/21 until 2017/5/20 on 66 PCOS women within the age range of 20–40 years and a menstrual interval of at least 60 days during the last year. Participants’ calf muscles were cupped on day 26 of their last menstruation cycle following the Persian Medicine recommendations. They were followed for 12 weeks and a menstruation history and physical examination was done twice (4 and 12 weeks after wet cupping). Insulin Resistance (IR) and Free Androgen Index (FAI) were evaluated at baseline and end of the study.

Results
Wet-cupping on calf muscles significantly improved menstrual cycles’ frequency 0.37(95% CI: 0.13, 0.51), p-value=0.001 and hirsutism after 4 and 12 weeks of intervention were −1.9 (95% CI: −2.5, −0.5), p-value<0.001 and −1.4(95% CI: −2.1, −0.8), p-value<0.001, respectively. While it was not significant in changing the IR and FAI. About 33% of participants suffered from mild temporary discomforts (which were resolved within a few minutes of rest) and 9% reported mild long-term side effects.

Conclusions
It is considered that wet-cupping on calf muscles can be propounded as an optional treatment of PCOS for those not willing to use chemical medication.
A triple combination of treatments on moderate COVID-19
Authors: Bao ChunMiao , Li BinBin , Zhou YuFeng 
Published: May 2021

Abstract

Objective
A triple combination of interferon (IFN) α-2b, lopinavir tablets, and umifenovir was used to treat COVID-19 patients. It is important to explore whether the benefit of this therapy is time dependent.

Methods
A cohort of moderate COVID-19 patients (n = 54) was admitted for hospitalization. The demographic (age, gender, and smoking status) and clinical characteristics (epidemiological trace and comorbidity) were collected from the digital medical records. The length of hospital stay (LOS) and the viral shedding time (VST) were set as the outcomes for COVID-19 cases.

Results
After control for age, sex, epidemiological trace, smoking, and comorbidity, the time of treatment start had null effect on VST (IRR = 1.09; 95% CI = 0.91–1.30; p = 0.33) or LOS (IRR = 1.10; 95% CI = 0.94–1.28; p = 0.23).

Conclusion
There is no convincing evidence to support a pivotal role of the timing of the therapy in the prognosis of moderate COVID-19 cases.
Archaeological Evidence of Gender Differences in Violent Repression
Authors: Díaz-Ramoneda Eulàlia , Herrasti Erlogorri Lourdes , Solé Barjau Queralt 
Published: May 2021

This article discusses women who were either executed by military firing squad or killed extrajudicially during the Spanish Civil War and the Franocist dictatorship, based on evidence from the scientific exhumation of common graves in the twenty-first century. The evidence sheds light on an aspect of Francoist repression that previously has received little attention from scholars and for which few written sources are available, in contrast to executions and killings of men. Archaeological and forensic studies have documented the circumstances of how the women in the graves died, revealing differences between military executions and how extrajudicial killings were conducted. A comparison with findings from male remains found in common graves reveals gendered differences in materiality and in how victims were treated before, during and after death.
Experience of remote monitoring of patients with cardiovascular diseases in the Perm Krai
Authors: Sukhanov M. S. , Karakulova Yu. V. , Prokhorov K. V. , Spasenkov G. N. , Koryagina N. A. 
Published: May 2021

The first review on the effectiveness of remote monitoring in cardiovascular patients was published in 2007, which is still relevant, reaching the peak during the Coronavirus disease 2019 (COVID-19) pandemic. Reduced availability of elective outpatient care, and sometimes reluctance of patients to visit the office due to the pandemic, required changes in ambulatory follow-up. In order to increase the availability of healthcare and reduce the mortality of Perm Krai population from cardiovascular diseases during the COVID-19 pandemic, a project for remote monitoring of high-cardiovascular-risk patients was developed and implemented.The developed remote monitoring project represents regular phone contacts with a patient included in the remote monitoring program, according to which the need for further face-to-face consultation, additional diagnostic tests and treatment strategy is determined. The working group of the project identified indications for including patients in remote monitoring, algorithms for phone contacts and management options depending on the responses received from patients.The project was launched in July 2020. Initially, it included five medical institutions, which selected 3901 patients.The results will be published as the project moves forward.
Antithrombotic therapy in the elderly and senile age: the consensus opinion of experts of the Russian Association of Gerontologists and Geriatricians and the National Society of Preventive Cardiology
Authors: Tkacheva O. N. , Vorobyeva N. M. , Kotovskaya Yu. V. , Runikhina N. K. , Strazhesco I. D. , Villevalde S. V. , Drapkina O. M. , Komarov A. L. , Orlova Ya. A. , Panchenko E. P. , Pogosova N. V. , Frolova E. V. , Yavelov I. S. 
Published: May 2021

В данном документе обсуждаются особенности АТТ у лиц пожилого и старческого возраста в различных клинических ситуациях.
Polycystic Ovary Syndrome and Sleep Disorders: Association Between Metabolic and Androgenic Alterations with Sleep Components
Authors: TURAN Özgür Deniz 
Published: May 2021

Objective: To investigate the sleep quality in patients with polycystic ovary syndrome (PCOS) and to examine the effects of metabolic parameters on sleep disturbances.
Material and Methods: The study included 50 patients diagnosed as PCOS and 51 normal healthy volunteers. The Pittsburgh Sleep Quality Index (PSQI) was used to evaluate the sleep quality. Index consists of 18 items and seven components and according to the index, the total scores of five or more indicate a poor sleep quality. After the sleep quality scores were determined, serum insulin, triglyceride, cholesterol, fasting glucose and androgen levels were recorded retrospectively and all parameters compared between groups.
Results: The sleep quality was lower in the patients with polycystic ovary syndrome than in the healthy control group but this was not statistically significant (p>0.05). Serum dehydroepiandrosterone sulfate (DHESO4) and total testosterone level had a significant negative correlation with sleep duration and total
PSQI scores. In addition, serum total testosterone level also had a significant negative correlation with sleep latency, sleep disturbance and subjective sleep quality. Besides, the patients with the poor sleep quality had significantly lower serum dehydroepiandrosterone sulfate and testosterone levels than those with a normal sleep quality (p
Surgical fixation of posterior cruciate ligament avulsion fracture from tibial attachment using cannulated cancellous screw: a clinical, radiological and functional outcome evaluation
Authors: Mondal Aniruddha , Das Ayon 
Published: May 2021

<p class="abstract"><strong>Background:</strong> PCL (posterior cruciate ligament) is the main posterior stabilizer of the knee and plays a role in central axis controlling and imparting rotational stability to the knee. Injury to PCL presents commonly with avulsion fractures from its tibial attachment. An avulsion fracture of the PCL, if not surgically fixed, may lead to secondary changes in the knee joint. The aim of the study was to evaluate the clinical and functional results in patients with PCL tibial avulsion fractures treated by CC (cannulated cancellous) screw fixation.</p><p class="abstract"><strong>Methods:</strong> This was a prospective study conducted at a tertiary care government hospital in Kolkata, between December 2018 to July 2020 on patients who underwent CC screw fixation for post-traumatic PCL avulsion fracture from tibial site. All patients were followed up for 9 months. Lysholm knee score was used to assess the functional outcomes of the patients.<strong></strong></p><p class="abstract"><strong>Results:</strong> In a total of 10 patients, 9 (90%) patients showed excellent and 1 (10%) patient had good result during the final follow-up. 80% patients did not develop any complications. At the end of 9 months, the mean Lysholm score was 95.6. 8 (80%) patients achieved almost full knee ROM post-operatively by the end of final follow-up.</p><p class="abstract"><strong>Conclusions:</strong> Surgical fixation using CC screws is a simple, easy, safe and reproducible method without requiring significant expertise for achieving good stability in PCL tibial site avulsion fractures, where early intervention prevents significant late disability as it provides an excellent clinical, functional and radiographic outcome along with good joint function.</p><p> </p>
ANALYSIS OF SUGARCANE PRODUCTION IN PUNJAB, PAKISTAN; CONSTRAINTS AND YIELD NEXUS
Authors: Raza Hafiz Ali , Amir Rana Muhammad 
Published: May 2021

Purpose of study: For the previous couple of years, sugarcane crop production is under crisis for many reasons. This study aimed at exploring those reasons impeding the potential production of sugarcane in the Rahim Yar Khan district of Punjab, Pakistan.
Methodology: A total of 343 randomly selected sugarcane growers participated in this study as respondents. Data were collected through face-to-face interview techniques on a structured and validated questionnaire. Data were analyzed using both descriptive and inferential statistics through the Statistical Package for Social Sciences (version 22).
Results: Quantitative results indicated that the total production of sugarcane during the last two years dropped from 833 to 636 mounds per acre. The chi-square analysis confirmed that production, protection, climatic changes policy and financially associated factors had statistically significant (P<0.05) inverse impacts on sugarcane production. In contrast, the marketing factors were statistically non-significant for the production of sugarcane (P>0.05). The qualitative findings as perceived by key informants confirmed that non-availability of disease-resistant varieties, traditional irrigation mechanism, lack of proper plant protection measures, Integrated Pest Management (IPM), climate change, high cost of production, and sluggish policy had pressurized the sugarcane production.
Recommendations: It is suggested that the development of insect pests, diseasesand drought-resistant varieties should be launched. Efficient and alternate row irrigation system, climate change adoption strategies, integrated pest management, mechanized farming of sugarcane should be adopted in order to curtail the production cost and increase the level of production.
Novelty: Studies have been conducted to investigate the influencing factors on the yield of sugarcane but this is the first study that indicates the association of those factors that are hampering on-farm production of sugarcane crop in district Rahim Yar Khan, Punjab, Pakistan.
Gambaran Tawakal Pada Mahasiswa Yang Memiliki Penyakit Kronis
Authors: Zulkifli Munirah , Hairina Yulia , Mubarak Mubarak 
Published: May 2021

Chronic illness is a dangerous disease that cannot be underestimated or ignored because it can cause death at any time, but this is not an excuse for some students at UIN Antasari where they live and continue their studies well even though in their bodies there are diseases that can cause death, this is because they choose to trust God because with trust they can live their lives better. So from that researchers are interested in examining the description of the trust process in students who have chronic diseases at UIN Antasari Banjarmasin and factors that influence attitudes trust. This research uses a qualitative approach. The subjects in this study were 3 students of UIN Antasari who had chronic diseases. Data collection in this study was obtained using Anecdotal Record observation techniques, and semi-structured interviews. After the data is collected, it is then analyzed with the stages of editing, coding, description and concluding data. Based on the results of this study, there are several aspects that arise after making trust, such as the emergence of calm and peace, generate strength, Rida, and the emergence of hope. The factors that influence tawakal behavior are, first, the environmental factors which come from the surrounding environment such as family, friends and the community. These two factors are experiences in which the fator is able to provide input for life values.
ANALISIS OPTIMASI PENGGUNAAN FAKTOR PRODUKSI KOPI BUBUK PADA AGROINDUSTRI XYZ DI KOTA JAMBI
Authors: Ulma Riri Oktari , Nurchaini Dewi Sri , Damayanti Yusma 
Published: May 2021

<p align="center">This research aims to determine the influence of the factors of production of raw materials (coffee beans) and labor in the coffee ground agroindustry in Jambi City, analyze the level of optimization or economic efficiency of the use of coffee bean production factors and labor in the coffee ground agroindustry and determine the use of production factors optimal coffee beans and labor in the coffee ground agroindustry. This research was conducted for six (6) months from April to September 2019. The research subjects were the owner of the ground coffee business and the object of research was ground coffee produced in various types of packaging. 1 month, starting June 2019 until July 2019. Based on the research results physical/technical addition of raw materials for coffee beans and labor per quarter influences the increase in ground coffee production. Each additional raw material for coffee beans by 10% will increase the production of ground coffee by 4.09%, while the addition of labor will increase the production of ground coffee by 4.14%. The use of coffee bean raw material production factors can be added up to an optimal limit of 28,876.35 kg/quarter or there is an increase of 23.68% of the actual use. In one month the optimal limit is the amount of raw material used to be 9,625.45 kg or 385.02 kg per day. The use of labor can be added up to an optimal limit of 114 working people (HOK) or an increase of 25.30% of the actual use of labor. Calculated in working hours, the optimal use of working hours is 17,100 working hours per quarter or 5,700 working hours per month. Within one workday the limit for the optimal use of work is 228 hours with the number of workers being ± 38 people. The optimum amount of production is 27,354.32 / quarter, an increase of 5,165.02 kg (23.28%) of actual production. The optimum profit increased by Rp 335,257,566.67 or 23.68% of the actual profit.</p><p align="center"> </p>
Sequential Bilateral Achilles Tendon Rupture in a Teenager After Ponseti Treatment for Bilateral Clubfoot
Authors: Aretakis Alexander C. , Georgopoulos Gaia 
Published: May 2021

Case:
Our patient was born with bilateral congenital clubfeet and underwent standard Ponseti treatment. At 8 months of age, bilateral percutaneous Achilles tenotomies were performed, with an excellent outcome. At 16 years, he suffered a unilateral Achilles tendon rupture, and at 18 years, he suffered a contralateral Achilles rupture, both of which were successfully repaired.

Conclusion:
As far as we know, this is the first reported case of bilateral Achilles tendon ruptures in an adolescent. This patient also previously underwent Ponseti casting and Achilles tenotomy for congenital clubfoot. We are aware of 5 previously reported cases of Achilles rupture in a pediatric or adolescent patient.