bluuebunny/crossref_metadata_2025_split huggingface dataset:
Rhombic Calcite Microcrystals as a Textural Proxy for Meteoric Diagenesis
Authors: Hashim Mohammed S. , Kaczmarek Stephen E. 
Published: August 2021

Abstract
Numerous Phanerozoic limestones are characterized by diagenetic calcite microcrystals formed during mineralogical stabilization of metastable carbonate sediments in various diagenetic environments. Laboratory experiments show that calcite precipitating under conditions similar to those that characterize meteoric settings (impurity-free, low supersaturation, high fluid:solid ratio) exhibits the rhombic form, whereas calcite precipitating under conditions similar to those that prevail in marine burial settings (impurity-rich, high supersaturation, low fluid:solid ratio) exhibits non-rhombic forms. This prediction is tested here using new and previously published textural and geochemical data from the rock record. These data show that the vast majority of Phanerozoic limestones characterized by rhombic microcrystals also exhibit petrographic and/or geochemical evidence (depleted 𝛿13C, 𝛿18O, and trace elements) indicative of meteoric diagenesis. In contrast, non-rhombic forms are associated with marine burial conditions, suggesting that rhombic calcite microcrystals may provide a valuable textural proxy for meteoric diagenesis in Phanerozoic limestones.
Application of Convolutional Neural Networks for Prediction of 1 Disinfection By-Products
Authors: Peleato Nicolás M. 
Published: August 2021

Abstract
Fluorescence spectroscopy can provide high-level chemical characterization and quantification that is suitable for use in online process monitoring and control. However, the high-dimensionality of excitation-emission matrices and superposition of underlying signals is a major challenge to implementation. Herein the use of Convolutional Neural Networks (CNNs) is investigated to interpret fluorescence spectra and predict the formation of disinfection by-products during drinking water treatment. Using deep CNNs, mean absolute prediction error on a test set of data for total trihalomethanes, total haloacetic acids, and the major individual species were all < 6 µg/L and represent a significant difference improved by 39% - 62% compared to dense neural networks. Heat maps that identify spectral areas of importance for prediction showed unique humic-like and protein-like regions for individual disinfection by-product species that can be used to validate models and provide insight into precursor characteristics. The use of fluorescence spectroscopy coupled with deep CNNs shows promise to be used for rapid estimation of DBP formation potentials without the need for extensive data pre-processing or dimensionality reduction. Knowledge of DBP formation potentials in near real-time can enable tighter treatment controls and management efforts to minimize the exposure of the public to DBPs.
On the formation of Martian blueberries
Authors: Eberl D. D. 
Published: August 2021

Abstract
The Martian blueberries, first discovered by NASA’s Opportunity rover, are concretions likely formed in sediments from hydrothermal solutions resulting from bolide impact into groundwater or permafrost. Evidence for this conclusion comes from the shapes of particle size distributions measured from Opportunity photos by Royer et al. (2006, 2008). These distributions, which exhibit a unique negative skew and lognormal positive skews, fit theoretical and experimental shapes determined for minerals precipitated from solution at higher and lower levels of supersaturation, respectively. The authors of these particle size measurements suggested that the blueberries were formed by aggregation or vapor condensation from a large meteoritic impact cloud. This origin is unlikely because such an event would not have created both negative and positive skews that closely fit distribution shapes expected for mineral crystallization from solution.
Current trends in the rehabilitation of patients with spastic paresis with focal brain damage
Authors: Krylova L. V. , Khasanova D. R. , Agafonova N. V. 
Published: August 2021

Spasticity is one of the most frequent movement disorders and its development is associated with such CNS lesions as stroke, multiple sclerosis, cerebral palsy, craniocerebral and spinal injuries, CNS tumors, neurodegenerative diseases. Post-stroke spasticity develops in about 40% of patients, and about 15% of patients have severe and disabling spasticity. According to statistics, after TBI, about 75% of patients develop spasticity, and half of them require treatment.Spasticity worsens walking, complicates hygiene, dressing, complicates rehabilitation measures, and reduces the quality of life of patients and his family members. In recent years, this movement disorder has been actively studied, new data have appeared on the pathophysiology of spastic paresis and encouraging data on improving function in patients receiving botulinum toxin injections as part of multidisciplinary rehabilitation.The article presents data from the latest systematic reviews on the effectiveness of various rehabilitation technologies for the treatment of spasticity.The use of botulinum neurotoxin for the treatment of spastic paresis of the upper and lower extremities is the preferred method of complex multidisciplinary rehabilitation of patients with spasticity and has the highest level of evidence.Currently, there is no doubt that botulinum toxin should be used as early as possible in patients with an emerging pathological movement pattern, which can contribute to pattern change and muscle length maintenance. But the question remains: which rehabilitation technology is most effective for enhancing and prolonging the action of botulinum neurotoxin. To date, there is no clear answer to this question.
Priorities of medical rehabilitation of patients with recent experience of transient ischemic attack
Authors: Kostenko E. V. , Petrova L. V. , Eneeva M. A. , Kravchenko V. G. 
Published: August 2021

Introduction.Transient ischemic attacks can be a predictor of a more severe cardiovascular event, the risk of which depends on many factors that requires a personalized approach. Neuropsychological disorders (cognitive, emotional) have a significant impact on quality of life and social activity and are often underestimated in patients with TIA. Comprehensive medical rehabilitation with the inclusion of antithrombotic therapy and psychocorrection measures may reduce the risk of recurrent cardiovascular events in patients with TIA.Purpose of the study: to substantiate the efficiency of complex medical and non-pharmacological rehabilitation in patients who underwent TIA by analyzing the characteristics of the main and leading concomitant diseases.Materials and methods. The morbidity of 351 TIA patients was studied and analyzed. The average age of the examined patients was 58.6 ± 2.2 years, there were 64.9% of women and 35.1% of men. All patients received an individualized medical rehabilitation program for 12 months with correction of identified neuropsychological disorders. Depending on background and concomitant diseases the antiplatelet or anticoagulants therapy was differently administrated.Results and dicussion. Psychological, cognitive, and physical disorders (based on subjective complaints) are common in patients with TIA. The prevalence of mental disorders in patients with TIA was 138.2 cases per 100 patients. The correction of cognitive impairment, depressive symptoms is associated with improved quality of life (p < 0.05). Repeated acute cerebrovascular events (TIA, ischemic stroke) were recorded during the first 6 months after TIA in 29 patients (10.4%) with severe stenosis of the brachiocephalic arteries, severe arterial hypertension and paroxysmal atrial fibrillation.Conclusion.The importance of comprehensive medical and social rehabilitation of patients with TIA is determined. The participation of a psychotherapist as a member of a multidisciplinary team is necessary. A significant role of the secondary prevention of acute cerebrovascular events is assigned to rational antithrombotic therapy.
Possibilities of combined nasal drugs in symptomatic therapy of allergic rhinitis in adolescent children
Authors: Karpova E. P. , Tulupov D. A. 
Published: August 2021

This article provides an overview of current views on the problem of allergic rhinitis (AR) in children. Modern data on the epidemiology of AR and the main comorbid conditions are highlighted. It has been noted that adolescence is the peak incidence of AR. Despite the similar clinical manifestations of AR in adolescent children, it should be borne in mind that patients in this age group represent a unique population with needs and perceptions of problems that are different from those of adults and young children. Mental perception of the symptoms of the disease is more often more pronounced in adolescents than in other age groups. This manifests itself in a large negative impact on both sleep and rest patterns, as well as on learning activity and exam results. The work of a doctor with patients of this age group requires the most rationalized approach. Based on the data of the latest consensus documents, the role of I and II generation antihistamines, intranasal antihistamines and intranasal glucocorticosteroids was assessed. The possibilities of symptomatic therapy of symptomatic moderate and severe AR with the help of nasal sprays based on a fixed combination of intranasal glucocorticosteroids and antihistamines have been evaluated in more detail. The available data from clinical studies of the use of a nasal spray based on a fixed combination of mometasone furoate and olopatadine are reviewed. Based on the above material, it was concluded that nasal sprays of a fixed combination of mometasone furoate and olopatadine are effective means of starting therapy for moderate to severe seasonal and perennial AR in children over 12 years of age. Such combination drugs can reduce the severity of AR symptoms with a relatively low risk of developing adverse events.
Description of a clinical case of combination of celiac disease and ichthyosis in a girl
Authors: Kamilova A. T. , Geller S. I. , Ubaykhodjaeva X. T. 
Published: August 2021

Abstract Introduction. Celiac disease, or gluten-sensitive enteropathy, can be defined as a persistent intolerance of wheat gliadins and other cereal prolamines in the small intestinal mucosa of genetically susceptible individuals. The clinical picture of the disease can often be misleading because it varies greatly from patient to patient, resulting in delayed diagnosis.To analyze the clinical case of a child with celiac disease and acquired ichthyosis.Results.The disease, until a final diagnosis was established, had a severe course due to gastrointestinal and dermatological disorders. From the age of 1.5 years, the child had frequent diarrhea, bloating, which is why she was repeatedly hospitalized in the hospital at the place of residence. However, there was no effect from the ongoing therapeutic measures, and other symptoms such as vomiting, peripheral edema, deficiency of height and weight, and severe peeling of the skin joined in. The diagnosis was finally confirmed at the age of 2.5 years after the test for antibodies to tissue transglutaminase IgA (fifty-fold excess relative to the norm). A genetic study revealed alleles of genes responsible for predisposition to celiac disease. The results of a biopsy of the mucous membrane of the duodenum had signs of atrophy, lymphoid infiltration, corresponding to a lesion of the small intestine according to the classification Marsh III. Microscopic examination of the skin – hyperkeratosis with a decrease in the granular layer. On the basis of the obtained data, the diagnosis was made: Celiac disease, active phase, severe course, complicated by proteinenergy insufficiency severe degree, exudative enteropathy syndrome, 2 degree anemia, concomitant diagnosis: acquired ichthyosis. The girl was prescribed a gluten-free diet, and symptomatic drug therapy was carried out. In dynamics, the condition has improved. After 6 months, at the second visit, gastrointestinal and skin symptoms were absent, physical development was age-appropriate.Conclusions.The classic form of celiac disease usually manifests itself with several major symptoms, such as diarrhea, abdominal pain, weight loss, and nutritional deficiencies. In this article we wanted to talk about a rare combination of celiac disease with ichthyosis, therefore, practitioners should be wary of a combination of skin and gastrointestinal symptoms.
Urinary tract infections and vitamin D: prospects for use in prevention and treatment
Authors: Zakharova I. N. , Tsutsaeva A. N. , Dolbnya S. V. , Kuryaninova V. A. , Klimov L Ya. , Minasyan А. Ke. , Bobryshev D. V. , Eryomenko A. I. 
Published: August 2021

Urinary tract infections are a common global problem among physicians of various specialties, including therapists, pediatricians, nephrologists and urologists. Today UTI is one of the leading bacterial infections in both adult and child populations. The main type of therapy and prevention of recurrent UTI is the use of drugs with an antibacterial effect (antibiotics, uroseptics). An urgent problem in modern medical practice is the increasing antibiotic resistance, which requires the development of new approaches to therapy and prevention, including UTI. In recent years, special attention has been paid to the study of vitamin D receptor (VDR) gene polymorphisms as a possible risk factor determining the predisposition to a number of infectious and noninfectious diseases. More than 200 polymorphisms of the VDR gene have been identified, four of which – FokI, BsmI, ApaI, and TaqI – are particularly common. Different VDR alleles can cause small changes in receptor function, which can affect resistance or susceptibility to a particular infection. The review presents data from modern studies demonstrating the relationship between vitamin D supply and development, the frequency of recurrence and the nature of the course of UTI. In one study, vitamin D has been shown to enhance the cathelicidin-mediated antibacterial action of bladder epithelial cells. It also demonstrated the currently known defense mechanisms of vitamin D against urinary tract infections, including its effect on components of the innate immune system.
Impairment of carbohydrate metabolism in children and adolescents with obesity
Authors: Vitebskaya A. V. , Popovich A. V. 
Published: August 2021

Obesity is one of the socially significant diseases of our time and is a generally recognized risk factor for the development of carbohydrate metabolism disorders, including type 2 diabetes mellitus (DM), the prevalence of which in the pediatric population is rapidly increasing.Aim of the study. To demonstrate the most frequent types of carbohydrate metabolism disorders in children and adolescents with obesity.Materials and methods. 123 obese patients under 18 years old were examined and the structure of obesity complications was analyzed.Results. Carbohydrate metabolism disorders were identified in 24 patients (19%): impaired fasting glycemia (IFG) (8 girls, 6 boys (11%)), type 2 DM (6 girls, 3 boys (7%)), and type 1 DM (1 boy (1%)). Descriptions of 4 clinical cases are given: 1) patient, 17 years old, with constitutional-exogenous obesity of 3rd degree, arterial hypertension (AH), dyslipidemia and nonalcoholic fatty liver disease (NAFLD) and a history of transient IFG; 2) patient, 16 years old, with morbid obesity, NAFLD, AH, polycystic ovarian syndrome (PCOS), type 2 DM, compensated on metformin therapy; 3) patient, 17 years old, with constitutional-exogenous obesity of the 3rd degree, AH, dyslipidemia, NAFLD, type 2 DM (on insulin pump therapy), complicated by diabetic nephropathy and diabetic polyneuropathy; 4) patient, 12 years old, with type 1 DM, manifested against the background of obesity.Conclusion. When screening for obesity complications in children and adolescents, carbohydrate metabolism disorders may be detected in one in five patients. Prediabetes in childhood can be transient. When a child with obesity is identified, differential diagnosis of type 1 and type 2 DM should be made. It is necessary to teach patients with type 2 DM the skills of self-monitoring on a par with patients with type 1 DM and motivate them to control glycemia regularly at home.
Surgical treatment of children with complications of foreign bodies of the gastrointestinal tract
Authors: Sokolov Yu. Yu. , Korovin S. A. , Donskoy D. V. , Tumanyan G. T. , Dzyadchik A. V. 
Published: August 2021

Introduction. At the present time the expansion of the spectrum of urgent diseases of the abdominal cavity organs is registered due to the patients with complications of foreign bodies of the gastrointestinal tract. Development of rational treatment-diag nostic algorithm will promote to improve the results of surgical treatment of children with complications of foreign bodies of gastrointestinal tract.Aim. To determine the efficacy of laparoscopic techniques in children with complications of foreign bodies of the gastrointestinal tract..Materials and methods. 38 children with foreign bodies of the gastrointestinal tract of different characteristics, which required surgical treatment, were included in the study.Results and discussion. On the basis of analysis of clinical and medical history data, results of instrumental methods of preoperative diagnostics and laparoscopy three clinical stages of the disease were distinguished. Statistically reliable differences of the presented indicators in different terms of the disease were proved. Surgical intervention involved laparoscopy, during which the volume of surgical intervention was specified. Laparoscopic techniques were effective in the groups of patients with I, II and III stages of the disease in 100, 46 and 20% of observations, respectively.Conclusions. Clinical manifestations in complications of foreign bodies of the gastrointestinal tract are determined by the characteristics of the latter and the clinical stage of the disease. Laparoscopic techniques can be effective at initial stages of the disease. At a complicated course of the disease the required volume of surgical intervention can be performed during laparotomy. The variety of clinical manifestations of foreign bodies of the gastrointestinal tract complications is determined by the characteristics of the damaging agents and the clinical stage of the disease. Laparoscopic techniques of surgical treatment may be a priority in the absence of a complicated course of the disease; in late stages of the disease laparotomy is the operation of choice.Conclusion. Analysis of treatment results of children with complications of FBs of GIT revealed statistically significant differences in some clinical and anamnestic data, results of instrumental methods of preoperative diagnosis and intraoperative manifestations, which allowed us to define three clinical stages of the disease.
Сare pathways of children with acute rhinological symptoms
Authors: Karpova E. P. , Tulupov D. A. 
Published: August 2021

Acute respiratory diseases are one of the most common reasons for visiting a doctor in pediatric practice. Most episodes of this pathology have a viral etiology, signs of inflammation from the upper respiratory tract and proceed with symptoms of acute rhinitis (acute nasopharyngitis). The most of episodes of acute rhinitis last no more than 10 days and end with the patient’s recovery. The most common complications of acute rhinitis in children are acute rhinosinusitis and acute otitis media. These diseases are often mild and rarely have complications. However, a large number of patients with acute respiratory diseases increases the likelihood of a situation in which the doctor will encounter a problem patient. The article proposes care pathways for practitioners to manage patients with acute rhinological symptoms lasting up to 10 days and from 10 days to 3 months. The care pathways are based on several key points. No1: each patient must be analyzed for the presence of alarming symptoms, upon detection of which the patient should be urgently hospitalized. No2: all patients should be dynamically observed by a doctor until complete recovery, the patient should not receive treatment without the supervision of a doctor. No3: the basis of treatment is drugs for symptomatic therapy, which are selected depending on the dominant symptom that has the greatest impact on the patient’s well-being. To eliminate nasal mucosal edema, it is rational to use nasal decongestants (original oxymetazoline) for children of all ages; the course and dosages are determined according to the age of the child. Antibacterial drugs should be prescribed strictly according to indications in the presence of convincing data for the bacterial etiology of the disease.
The effectiveness of the combination of Lactobacillus rhamnosus GG and prebiotics in the treatment of atopic dermatitis in children
Authors: Malanicheva T. G. , Ziatdinova N. V. , Serdinskaya I. N. 
Published: August 2021

Introduction.Traditional antiallergic therapy for atopic dermatitis, including allergen elimination, therapeutic cosmetic skin care, external anti-inflammatory therapy and antihistamines, does not always lead to the desired result. On this basis, the search for new methods of treatment is urgent and promisingAim.To study the clinical efficacy of a combination of Lactobacillus rhamnosus GG and prebiotics in children in the first years of life with atopic dermatitis (AD).Materials and methods. The observed children were divided into 2 parts: 30 children aged from 1 month to 3 years old, patients with AD constituted the main group, it differed in that these patients were synbiotic (combination of Lactobacillus rhamnosus GG and prebiotics) – 1 sachet per day for 14 days. This drug was prescribed as part of complex therapy. The remaining 25 children with AD made up a comparison group, which was characterized by the fact that children received only antiallergic therapy without symbiotic. Clinical methods of blood pressure examination, laboratory instrumental and specific allergological methods were carried out.Results and discussion. Against the background of the therapy in children with blood pressure in the main group, общий overall treatment effect was higher and amounted to 86.6 + 4.0%, and in the comparison group – 76.0 + 3.9%, p < 0.05. This was manifested in a decrease in the duration of the exacerbation period by 1.4 times, the prevalence of a high individual therapeutic effect by 1.5 times, a decrease in the SCORAD index by 4 times against the background of an increase in the number of bifidobacteria and lactobacilli in the intestine. The revealed clinical efficacy was noted against the background of an increase in the number of bifidobacteria and lactobacilli in the intestine.Conclusions.The obtained results allow us to recommend a combination of Lactobacillus rhamnosus GG and prebiotics in children in the first years of life as part of complex therapy to increase the effectiveness of treatment.