bluuebunny/crossref_metadata_2025_split huggingface dataset:
“Those are things for married people ”: Exploring parents’/adults’ and adolescents’ perspectives on contraceptives in Kenya
Authors: Mwaisaka Jefferson , Wado Yohannes Dibaba , Ouedraogo Ramatou , Oduor Clement , Habib Helen , Njagi Joan , Bangha Martin 
Published: November 2020

Abstract
BackgroundContraceptive use among adolescent girls is low in many sub-Saharan African countries including Kenya. One factor likely to limit contraceptive use among adolescent girls is the attitude of parents and other community members including adolescent girls themselves. Understanding parents’, other adults’ in the community and adolescent girls’ perspectives and attitudes towards contraceptive use might help to unravel the cause of low use of contraception among adolescent girls. This study therefore sought to explore and compare adults’/parents’ and adolescent girls’ narratives and perspectives about contraception in Narok and Homa Bay counties, Kenya. MethodsQualitative data from 45 in-depth-interviews conducted with purposively selected consenting adolescent girls aged 15-19 was used. Additionally, twelve focus group discussions were held with 86 consenting adults conveniently recruited from the two counties. All discussions were conducted in the local language and audio recorded following consent of the study participants. Female moderators were engaged throughout the study making it appropriate for the study to solicit feedback from the targeted respondents.Results Findings highlighted adults’ perceptions on adolescents’ sexuality and the presence of stringent conceptions about the side-effects of contraception in the study communities. Some participants underscored the need for open contraceptive talk between parents and their adolescent girls. Four main themes emerged from the discussions; i) Perceptions about adolescents’ sexuality and risk prevention, ii) Conceptions about contraception among nulligravida adolescents: fear of infertility, malformation and sexual libertinism, iii) Post-pregnancy contraceptive considerations and iv) Thinking differently: divergent views regarding contraceptives and parent/adolescent discussion.ConclusionsOur findings suggest the need for increased attention towards adolescents and their caregivers particularly in demystifying contraceptive misconceptions. Programmatic responses and models which include the provision of comprehensive sexuality education and increased access to and utilization of SRH information, products and services through a well-informed approach need to be well executed. Programmatic efforts like SRH community education should further seek to enhance the capacity of parents to discuss sexuality with their adolescents.
Relationships between test positivity rate, total laboratory confirmed cases of malaria, and malaria incidence in high burden settings of Uganda: An ecological analysis
Authors: Okiring Jaffer , Epstein Adrienne , Namuganga Jane F. , Kamya Victor , Sserwanga Asadu , Kapisi James , Ebong Chris , Kigozi Simon P. , Mpimbaza Arthur , Wanzira Humphrey , Briggs Jessica , Kamya Moses R. , Nankabirwa Joaniter I. , Dorsey Grant 
Published: November 2020

Abstract
Background: Malaria surveillance is critical for monitoring changes in malaria morbidity over time. National Malaria Control Programs often rely on surrogate measures of malaria incidence, including the test positivity rate (TPR) and total laboratory confirmed cases of malaria (TCM), to monitor trends in malaria morbidity. However, there are limited data on the accuracy of TPR and TCM for predicting temporal changes in malaria incidence, especially in high burden settings.Methods: This study leveraged data from 5 malaria reference centers (MRCs) located in high burden settings over a 15-month period from November 2018 through January 2020 as part of an enhanced health facility-based surveillance system established in Uganda. Individual level data were collected from all outpatients including demographics, laboratory test results, and village of residence. Estimates of malaria incidence were derived from catchment areas around the MRCs. Temporal relationships between monthly aggregate measures of TPR and TCM relative to estimates of malaria incidence were examined using linear and exponential regression models. Results: A total of 149,739 outpatient visits to the 5 MRCs were recorded. Overall, malaria was suspected in 73.4% of visits, 99.1% of patients with suspected malaria received a diagnostic test, and 69.7% of those tested for malaria were positive. Temporal correlations between monthly measures of TPR and malaria incidence using linear and exponential regression models were relatively poor, with small changes in TPR frequently associated with large changes in malaria incidence. Linear regression models of temporal changes in TCM provided the most parsimonious and accurate predictor of changes in malaria incidence, with adjusted R2 values ranging from 0.81 to 0.98 across the 5 MRCs. However, the slope of the regression lines indicating the change in malaria incidence per unit change in TCM varied from 0.57 to 2.13 across the 5 MRCs, and when combining data across all 5 sites, the R2 value reduced to 0.38. Conclusions: In high malaria burden areas of Uganda, site-specific temporal changes in TCM had a strong linear relationship with malaria incidence and were a more useful metric than TPR. However, caution should be taken when comparing changes in TCM across sites.
Prevalence and associated factors for Alcohol Use Disorder among tuberculosis patients: A systematic review and meta-analysis study.
Authors: Necho Mogesie , Tsehay Mekonnen , Seid Muhammed , Zenebe Yosef , Belete Asmare , Gelaye Habitam , Muche Amare 
Published: November 2020

Abstract
Background: Alcohol use disorders (AUD) in tuberculosis patients are complicated with poor compliance to anti-tuberculosis treatment and poor tuberculosis treatment outcomes. However, aggregate data concerning this problem is not available. Therefore, this review aimed to fill the above gap by generating an average prevalence of AUD in tuberculosis patients.Method: Our electronic search for original articles was conducted in the databases of Scopus, PubMed, and EMBASE, African Index Medicus, and psych-info. Besides, the reference list of selected articles was looked at manually to have further eligible articles for the prevalence and associated factors of AUD in tuberculosis patients. The random-effects model was employed during the analysis. MS-Excel was used to extract data and stata-11 to determine the average prevalence of AUD among tuberculosis patients. A sub-group analysis and sensitivity analysis were also run. A visual inspection of the funnel plots and an Eggers publication bias plot test were checked for the presence of publication bias.Result: A search of the electronic and manual system resulted in 1970 articles. After removing duplicates and unoriginal articles, only 28 articles that studied 30854 tuberculosis patients met the inclusion criteria. The average estimated prevalence of AUD in tuberculosis patients was 30% (95% CI: 24.00, 35.00). This was with a slight heterogeneity (I2 = 57%, p-value < 0.001). The prevalence of AUD in tuberculosis patients was higher in Asia and Europe; 37% than the prevalence in the US and Africa; 24%. Besides, the average prevalence of AUD was 39%, 30%, 30%, and 20% in studies with case-control, cohort, cross-sectional and experimental in design respectively. Also, the prevalence of AUD was higher in studies with the assessment tool not reported (36%) than studies assessed with AUDIT. AUD was also relatively higher in studies with a mean age of ≥ 40 years (42%) than studies with a mean age < 40 years (24%) and mean age not reported (27%). Based on a qualitative review; the male gender, older age, being single, unemployment, low level of education and income from socio-demographic variables, retreatment and treatment failure patients, stigma, and medication non-adherence from clinical variables were among the associated factors for AUD. Conclusion: This review obtained a high average prevalence of AUD in tuberculosis patients and this varies across continents, design of studies, mean age of the participants, and assessment tool used. This implied the need for early screening and management of AUD in tuberculosis patients.
Neutrophil-to-lymphocyte ratio has limited predictive value for determining outcomes in perforated colon cancer: a propensity score analysis.
Authors: Wu Chunyi , Chiang Jy-Ming , You Jeng-Fu , Tang Reiping , Chen Jinn-Shiun , Yeh Chien-Yuh , Hsieh Pao-Shiu , Tsai Wen-Sy , Hung Hsin-Yuan , Chiang Sum-Fu , Lai Cheng-Chou 
Published: November 2020

Abstract
Background: The neutrophil-to-lymphocyte ratio is a significant prognostic marker in resectable colorectal cancer; however, there are no equivalent findings for perforated colon cancer. Using our colorectal cancer database, we retrospectively analyzed the data from 1995 to 2015 to determine whether the preoperative neutrophil-to-lymphocyte ratio is associated with survival outcomes in patients with perforated colon cancer.Methods: One-to-one propensity score matching was applied to minimize the difference between the high (>5) and low (≤5) neutrophil-to-lymphocyte ratio groups. Clinicopathological factors, long-term overall survival, and disease-free survival were analyzed and compared between the two groups. The primary outcomes were overall survival and disease-free survival.Results: Before propensity score matching, the high neutrophil-to-lymphocyte ratio group had a significantly higher prevalence of leukocytosis (low vs. high neutrophil-to-lymphocyte ratio groups: 12 [12.9%] vs. 46 [59.7%], p<0.001), lower serum albumin levels (low vs. high neutrophil-to-lymphocyte ratio groups: 30 [32.3%] vs. 42 [54.5%], p=0.003), and a higher emergent operation rate (low vs. high neutrophil-to-lymphocyte ratio groups: 5 [5.4%] vs. 20 [26.0%], p<0.001). After one-to-one propensity score matching, the groups comprised 41 patients each; none of the parameters were significantly different between the two groups. The mean follow-up period was 76.3 months. The 5-year overall survival (p=0.637) and disease-free survival (p=0.827) rates were not significantly different between the high and low neutrophil-to-lymphocyte ratio groups.Conclusions: The neutrophil-to-lymphocyte ratio has limited predictive value for determining outcomes in patients with perforated colon cancer.
Higher expression of monocyte chemotactic protein 1 in mild COVID-19 patients might be correlated with inhibition of IFN signaling
Authors: Xi Xueyan , Guo Yang , Zhu Min , Wei Yuhui , Li Gang , Du Boyu , Wang Yunfu 
Published: November 2020

Abstract
Background: Chemokine levels in severe coronavirus disease 2019 (COVID-19) patients have been shown to be markedly elevated. But the role of chemokines in mild COVID-19 has not yet been established. According to the epidemiological statistics, most of the COVID-19 cases in Shiyan City, China, have been mild. The purpose of this study was to evaluate the level of chemokines in mild COVID-19 patients and explore the correlation between chemokines and host immune response.Methods: In this study, we used an enzyme-linked immunosorbent assay (ELISA) to detect serum levels of chemokines in COVID-19 patients in Shiyan City. Expression of chemokine receptors and of other signaling molecules was measured by real-time polymerase chain reaction (PCR).Results: We first demonstrated that COVID-19 patients, both sever and mild cases, are characterized by higher level of chemokines. Specifically, monocyte chemotactic protein 1 (MCP-1) is expressed at higher levels both in severe and mild cases of COVID-19. The receptor of MCP-1, C-C chemokine receptor type 2 (CCR2), was expressed at higher levels in mild COVID-19 patients. Finally, we observed a significant negative correlation between expression levels of interferon (IFN) regulatory factor 3 (IRF3) and serum levels of MCP-1 in mild COVID-19 patients.Conclusion: Higher expression of MCP-1 in mild COVID-19 patients might be correlated with inhibition of IFN signaling. The finding adds to our understanding of the immunopathological mechanisms of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection and provides potential therapeutic targets and strategies.
Surgical Procedure of Segmentectomy as a Possible Cause of Postoperative Cerebral embolism: A Case Report
Authors: Chen Peirui , Qing Qiushan , Diao Mingqiang , Sun Xiaokang , Yang Junrong , Lv Jing 
Published: November 2020

Abstract
Background: Cerebral embolism after lobectomy is a life-threatening complication during the early postoperative period. However, it is unclear if cerebral embolism can develop after segmentectomy. Case Presentation: We experienced a case of a 37-year-old man who demonstrated early symptom of acute ischemic stroke in early postoperative period after right upper posterior segmentectomy and performed intra-arterial mechanical thrombectomy (IAMT) successfully.Conclusions: long and irregular pulmonary vein stump (PVS) and endothelial injury caused by surgical procedure may lead to cerebral embolism after segmentectomy. We believe that doing preoperative pulmonary vascular assessment and using appropriate surgical procedure may reduce the rate of cerebral embolism.
Relativity and View Effects
Authors: Fischli Bernard 
Published: November 2020

Abstract
Relativity has been based on the implicit assumption that electromagnetism would exclusively describe interactions. Relativistic view effects are included as well, and they act with no force and no energy exchanges. The Ehrenfest paradox is solved. View effects specific to each point of view are the solution. The calculation of the deflection of light by the sun explains in detail why the deflection angle must be almost double the value obtained with Newton’s laws. The compatibility of General Relativity with the new interpretation is discussed. View effects cannot impact total energy. An object has no speed limit due to relativity but can be limited due to other causes. Inertial behavior is examined. Inertial masses are redundant, but this does not introduce gravitation to General Relativity.
Photochemically Induced Cyclic Morphological Dynamics via Degradation of Autonomously Produced Self-Assembled Polymer Vesicles
Authors: Lin Chenyu , Katla Sai , Perez-Mercader Juan 
Published: November 2020

Abstract
We report on the physico-chemical mechanism behind a dynamic morphological evolution process through which self-organized and self-assembled polymeric structures autonomously booted from a homogeneous mixture, evolve from nanosized micelles to micron-sized giant vesicles accompanied by periodic growth and implosion cycles when exposed to oxygen under light irradiation. The same system however resulted in formation of only nanosized objects or gelation with poor oxygen or with increase in temperature. Here we determine that such dynamic morphological evolution of our polymerization induced self-assembled amphiphiles is due to photoinduced chemical degradation within hydrated polymer cores which induces osmotic water influx and the subsequent morphological dynamics completely under the control of chemistry. This process also led to an increase in the population of the polymeric objects through system self-replication. This study offers a new path toward the design of chemically self-assembled systems and their potential application in the autonomous material artificial simulation of living systems.
Origin of Probability in Quantum Mechanics and the Physical Interpretation of the Wave Function
Authors: Wen Shuming 
Published: November 2020

Abstract
The theoretical calculation of quantum mechanics has been accurately verified by experiments, but Copenhagen interpretation with probability is still controversial. To find the source of the probability, we revised the definition of the energy quantum and reconstructed the wave function of the physical particle. Here, we found that the energy quantum ê is 6.62606896 ×10-34J instead of hν as proposed by Planck. Additionally, the value of the quality quantum ô is 7.372496 × 10-51 kg. This discontinuity of energy leads to a periodic non-uniform spatial distribution of the particles that transmit energy. A quantum objective system (QOS) consists of many physical particles whose wave function is the superposition of the wave functions of all physical particles. The probability of quantum mechanics originates from the distribution rate of the particles in a state in the QOS per unit volume at time t and near position r. Based on the revision of the energy quantum assumption and the origin of the probability, we proposed new certainty and uncertainty relationships, explained the physical mechanism of wave-function collapse and the quantum tunnelling effect, derived the quantum theoretical expression of double-slit and single-slit experiments.
The outbreak of the new coronavirus infection in pediatric TB department
Authors: Gubkina M. F. , Petrakova I. Yu. , Yukhimenko N. V. , Sterlikova S. S. , Khokhlova Yu. Yu. , Аmansakhedov R. B. 
Published: November 2020

The objective: to analyze the course of the new coronavirus infection (COVID-19) in children with active respiratory tuberculosis. Subjects and methods. The article describes results of retrospective analysis of the course of the new coronavirus infection in 25 children (3-12 years old) with active respiratory tuberculosis during the outbreak of COVID-19 in an in-patient TB unit.Results. 24 (96%) persons got infected after the close exposure to the coronavirus infection, and 1 (4%) child didn't get infected. The diagnosis was verified by polymerase chain reaction (detection of RNK of SARS-CoV-2) in 33.3%, by enzyme immunoassay (detection of IgG antibodies to SARS-CoV-2 in 1 month after quarantine removal) in 100%. 58.3% of children with respiratory tuberculosis (14 people) infected with coronavirus infection had minimal respiratory symptoms, that did not differ from signs of other respiratory viral infections; clinical manifestations of the disease were completely absent in 41.7% (10) patients. Coronavirus pneumonia was diagnosed in 4 (16.7%) children who suffered from COVID-19, they had no clinical signs of lower respiratory tract disorders and no body temperature increase; 3 patients had no signs of respiratory viral infection; in all cases, the lung damage detected by computed tomography didn't exceed 10%. In 2 months after the removal of quarantine, no IgG antibodies to SARS-CoV-2 were detected in 2 out of 10 examined children (20.0%), thus there was a chance for re-infection. No mutual aggravating effect of coronavirus infection and tuberculosis was revealed in their combination over the entire observation period (4 months).
Morphofunctional condition of palatine tonsils in various forms of chronic tonsillitis
Authors: Pal’chun V. T. , Kriukov A. I. , Gurov A. V. , Dubovaya T. K. , Ermolaev A. G. 
Published: November 2020

Introduction. According to different authors, 4 to 40% of the child and adult population suffer from chronic tonsillitis (СT), with many authors noting an increase in the number of cases and no tendency to decrease the frequency of this pathology.Objective. To optimize diagnostics and treatment tactic of taking patients with chronic tonsillitis (CT) using our own clinical and laboratory data and morphological data as well as literature data.Materials and methods. Аt the first stage of work, 166 patients were examined. They were divided into 4 categories (experimental groups) depending on clinical CT classification according to B.S. Preobrazhensky and V.T. Palchun. We also formed a group of patients who did not have CT symptoms. All patients underwent tonsillectomy or tonsillotomy. All tissue samples of palatine tonsils we got were investigated using immunohistochemical markers and default histological colorings. At the second stage, the dynamics of complaints, clinical symptoms and laboratory parameters were assessed in 247 patients diagnosed with CT Toxic-Allergic Form I (CT TAF I) before conservative treatment and 3 months after conservative treatment. Patients were divided into 3 groups depending on the conservative treatment regimen: a course of flushing the lacunae of the tonsils; antibiotic therapy with a retard form of clarithromycin; complex treatment combining the first two options.Results. Тhe chronic inflammatory process in the palatine tonsils changes their cytoarchitectonics. At the same time, there is a direct correlation between the presence and severity of changes with the clinical classification of chemotherapy according to B.S. Preobrazhensky and V.T. Palchun.Conclusion. With CT TAF II, the palatine tonsil not only loses its importance as an organ of the immune system, but also becomes a hotbed of infection in the body, which can cause severe complications. Only tonsillectomy can effectively protect the patient from these complications. At the stage of CT TAF I, the formation of metatansillar complications occurs. Patients with this form of CT require special attention, and correctly conducted conservative therapy can protect patients from local and general complications of CT. A variant of such conservative therapy that gives a lasting effect is complex therapy with washing the lacunae of the palatine tonsils with an antiseptic solution and simultaneous antibiotic therapy with 14-membered macrolides that can accumulate in the lymphadenoid tissue.
Basic principles for the treatment of chronic rhinosinusitis with nasal polyps
Authors: Savlevich E. L. , Cherenkova V. A. , Molodnitskaia A. Yu. 
Published: November 2020

Introduction. Chronic rhinosinusitis with nasal polyps (CRSwNP) is based on a chronic inflammatory hyperplastic process in the mucosa membrane of the nasal cavity and paranasal sinuses (SNPs). According to the consensus on the biological treatment of CRSwNP with or without asthma, which is one of the latest consensus documents of the European Forum for Research and Education in Allergy and Airway Diseases (EUFOREA), which was published in December 2019, the need for surgical treatment or systemic administration of corticosteroids due to the active nasal polyps growth are conditional signs for the decompensation of clinical control. Currently, the basic treatment for patients with CRSwNP is the long-term use of intranasal corticosteroids (INCS), which leads to an improvement in the quality of life, while minimizing the risk of exacerbations and complications.Research purpose. To evaluate the effectiveness of the basic therapy of intranasal glucocorticosteroid mometasone furoate for different phenotypes of CRSwNP.Methods. All patients with recurrent CRSwNP were divided into 3 equal phenotypic groups of 40 people each: group 1 – CRSwNP without asthma and respiratory allergies, group 2 – CRSwNP + atopy, group 3 – CRSwNP + non-allergic asthma. The observation period was 3 years.Results. Using the algorithm of stepwise therapy of CRSwNP, dynamic monitoring of these patients by an ENT and an allergistimmunologist, basic therapy with corticosteroids with constant treatment correction once every 3 months, it was possible to stabilize the inflammatory process throughout the respiratory tract and reduce the need for surgical treatment.Conclusion. With CRSwNP, long-term use of Mometasone furoate INCS is the main drug of basic therapy to minimize the recurrence of nasal polyp growth and is accompanied by clinical efficacy and the absence of adverse side effects.