bluuebunny/crossref_metadata_2025_split huggingface dataset:
Potential Response of Coral Reef’s Functional Structure and Snapper Abundance to Environmental Degradation in San Andres Island, Colombia
Authors: González-Gamboa Isabella , Santos-Martínez Adriana , Herrera-Martínez Yimy 
Published: January 2019

To determine the coral reef morpho-functional structure of San Andrés, regarding functional benthic diversity and fish (Lutjanidae), we evaluated the condition of the coral structure on the leeward side of the island, which is an area impacted by tourism, through diving and fishing. Three sampling sites were evaluated during two years recording the distribution of benthic organisms, environmental variables and Snappers density (Lutjanidae). A low density of Lutjanus jocu and Ocyurus chrysurus was found, with a high density of juveniles of L. apodus and L. mahogoni, which showed a preference for reefs with submassive and brain corals. Algae especially Macroalgae and octocorals were those with the greatest coverage in the reefs, followed by inert substrates, while corals were epresented by species with a wide distribution such as Agaricia agaricites and Porites astreoides. Octocorals correlated negatively with stony corals and that the most widespread fragile corals were the finger. We concluded that there is a higher density of mainly juvenile snappers where there is a greater variety of coral morpho-functional groups, and not necessarily in sites with greater coral coverage. Also, adult snappers were associated with octocoral zones. This shows that morpho-functional diversity is a crucial factor in the permanence of snappers.
Conhecendo o passado: relações entre a literatura brasileira contemporânea e a escrita da história
Authors: Timm Mateus Robaski 
Published: January 2019

A compreensão que a capacidade de aportar conhecimento sobre o passado não é exclusiva dos textos historiográficos proporcionou à literatura um novo estatuto, que lhe assegura pertinência epistemológica para recontar o passado. Neste artigo são analisadas diferentes formas em que o discurso literário configura o tempo histórico. Num primeiro momento, a potencialidade da literatura em rever criticamente os traumas do passado visa mostrar como é necessário que mais escritores se debrucem sobre situações terríveis como a escravidão e a ditadura para que estes traumas sejam passados a limpo. Na segunda parte, versões diferentes de relacionar a literatura com a história são propostas, através de uma leitura dos romances pelo viés da história das mentalidades, da história dos fatos públicos, mas também ao fazer do escritor personagem de ficção. Na última parte, a configuração ficcional do passado que é quase presente permite perceber algumas constantes que estão relacionadas com a contemporaneidade. *** Knowing the past: relations between contemporary Brazilian literature and the writing of history ***The understanding that the ability to bring knowledge about the past is not unique to the historiographical texts provided the literature with a new statute, which assures epistemological relevance to retell the past. In this article we analyze different ways in which literary discourse configures historical time. First, the potential of literature to critically review the traumas of the past seeks to show how it is necessary for more writers to dwell on terrible situations such as slavery and dictatorship so that these traumas are cleared up. In the second part, different versions of relating literature to history are proposed, through a reading of the novels by the bias of the history of mentalities, of the history of public facts, but also by making the writer a fictional character. In the last part, the fictional configuration of the past that is almost present allows one to perceive some constants that are related to contemporaneity.Keywords: Literature and history; Contemporary Brazilian literature; History writing.
METALLURGICAL PRODUCTION SLAGS – PROMISING MATERIAL FOR TECHNOLOGICAL WASTE RECLAMATION
Authors: Belanov I. P. , Naumova N. B. , Semina I. S. , Savenkov O. A. 
Published: January 2019

The article describes results of the microplot field trial to investigate potential use of metallurgical slags for fracture of capillary rim during reclamation of toxic waste dumping areas, such as enrichment plants tailings, solid waste dumps, etc., with minimal possible introduction of fertile soil layer. Such approach allows energy-effective utilization of metallurgical wastes. Four slags, produced at EVRAZ West Siberian plant by different technologies were used: white nonferrous, blast-furnace, converter and electric furnace slags. These slags were used as an inert material, underlying thin fertile soil layer in experimental microplots, where perennial plants (legume-grass mixture) were sawn. For each slag there was check variant (no fertilizer added), and variants with potassium humic agents, and their combination as mineral fertilizers. Aboveground phytomass at the end of the grow ing season varied from 17 to128 g/m2. Converter and blast furnace slags, which had the least phytotoxicity, appeared to be better inert materials. Mineral fertilizer, introduced itself and combined with humic agents, has increased aboveground phytomass 2 – 4 times as compared with check variant. Used separately, humic agent did not affect plant production, whereas used together with mineral fertilizer, it increased phytomass 1.6 – 1.8 times. Thus combined introduction of mineral fertilizer and humic agents is recommended to stimulate germination abilit y and phytomass production. Converter and blast furnace slags can be used as inert materials for reclamation with minimal fertile soil layer application, whereas white non-ferrous and electric furnace slags are not recommended for such application due to their high phytotoxicity, negatively affecting growth and development of perennial plants, used for reclamation.
SUBSTANTIATION OF THE NEED TO CREATE DISCRETE HYDRAULIC DRIVE SYSTEMS WITH A THIN FORMATION OF FLOW PULSES
Authors: Doroshenko I. V. 
Published: January 2019

The creation of machines for heavy mining conditions is impossible without solving the problems associated with the drive. The widely used hydraulic drive has a number of drawbacks that can not make it uniquely acceptable. More successful is the electric drive, which takes advantage of the stepping electric drive, but its scope is limited by the parameters of the hydraulic motors. That is why it is necessary to create a so-called discrete hydro motor drive that would allow generating pulses of small volumes with high frequencies to move the output links to specified distances with high accuracy in a wide range of speeds. This determines the relevance of the scientific and practical task under consideration. Conclusion: the use of dispensers will allow the implementation of discrete hydraulic drive systems, but for its final implementation it is necessary to justify the dynamic and geometric parameters of the device, as well as circuit solutions for the use of such dispensers.
LOAD DIAGRAMS FOR MODELING THE PROCESS OF INTERACTION OF EXTERNAL GEOKHOD MOVE WITH A AROUND CONTUR MASSIVE ROCKS
Authors: Beglyakov V. Yu. , Aksenov V. V. , Kostinets I. K. , Khoreshok A. A. 
Published: January 2019

Among the reliable tunneling complexes, without which it is impossible to create conditions for such a high-performance process, as mining of mine workings are geokhods. Since the geometric parameters of the external engine and the screw channel vary, the process of interaction of the geokhod systems with the geo- environment and with each other requires mathematical modeling. Modeling allows presenting schemes of interaction with various environments: loose (viscous-mobile) and strong. The mobility of the geoenvironment provides interaction along the entire supporting surface of the blade, so increasing the blade area leads to an increase in tractive effort. In strong rocks, the interaction occurs along the supporting surface of the blade, and the free surface may not touch the rock. Thus, in the interaction of the external propeller (HP) with the geoenvironment, the blade deforms; it is possible to form a region of crushing of the rock, and taking into account the elastic deformation in determining the geometric parameters of the blade and the canal will minimize the process of forming the region of crushing; when modeling the process of interaction of the VD with the medium, the load can be considered as uniformly distributed and equal to the ultimate strength of the rock for uniaxial compression.
THE CALCULATION OF MULTILAYER LINING OF TUNNELS, CONSTRUCTED IN A TECHNOLOGICALLY DIVERSE OF MASSIF SOIL
Authors: Nguyen Duyen Phong , Dang Trung Thanh , Pham Duc Thang , Ta Van Kien 
Published: January 2019

Addressing urban transport is a very timely matter, especially in the capital Hanoi and Ho Chi Minh City. In order to solve this problem, a solution has been proposed for the construction of overhead tram and subway lines. In fact, when constructing subway lines through historical sites, high population density, many surface structures, etc., the method of open construction is not feasible, it is necessary to use the method Underground construction. These areas are often weak soil, the physical parameters of the soil detrimental to the tunnel construction work; Such as small stickiness, small internal friction angle, high porosity, high permeability coefficient, high water saturation, short shear strength etc. These factors create complex geological conditions in Construction tunnel. With that in mind, the calculation of the selection of the tunnel casing structure is necessary, which is timely.This paper provides a solution to the problem of stress state of multilayer lining supporting the tunnel of circular cross-section, constructed in a technologically heterogeneous array. The tunnel lining and surrounding soil mass are considered as elements of a united deformable system.
Surgical treatment of malignant cerebellar infarction
Authors: Dashyan V. G. , Khodykin E. A. , Nikitin A. S. , Godkov I. M. , Sytnik A. V. , Khovrin D. V. , Sosnovskiy E. A. , Asratyan S. A. , Lukyanov A. L. , Sharifullin F. А. 
Published: January 2019

The study objective is to evaluate the effectiveness of various methods of surgical treatment of malignant cerebellar infarction.Materials and methods. There were 47 patients with malignant cerebellar infarction retrospectively analyzed in this study. The group 1 included all patients who underwent surgical treatment (n = 31), the group 2 included all patients who underwent conservative treatment (n = 16). In the group 1, 15 patients underwent isolated ventriculostomy, 4 – posterior fossa decompression (PFD), 14 – combination of ventriculostomy and PFD. The criteria of efficacy of surgery were: restoration of consciousness, restoration of forth ventricle and the quadrigeminal cistern configurations. Results of treatment were assessed according to the Glasgow outcome scale.Results. The recovery of consciousness level was observed in 7 out of 15 patients after isolated ventriculostomy on average 13 day; the efficacy was 47 %. Four patients underwent only PFD. Among them 2 patients needed additional external ventricular drainage installation as 2nd operation. The efficacy was 50 %. After PFD with simultaneous ventriculostomy the recovery of consciousness was observed on 4 day in 11 out of patients. The efficacy was 79 %. Combined ventriculostomy and PFD were 32 % more effective than ventriculostomy alone, and 29 % more effective than PFD alone.Conclusion. In patients with malignant cerebellar infarction with a decrease in consciousness and signs of brainstem compression, ventriculostomy with PFD are advisable, because isolated ventriculostomy does not always provide a necessary effect in decompensation of dislocation syndrome.
Treatment of a pregnant woman with glioblastoma complicated by acute occlusive hydrocephalus in the subcompensation stage (from practice)
Authors: Krylov V. V. , Godkov I. М. , Grin’ A. A. , Nefedova G. А. , Кim A. V. 
Published: January 2019

The study objective is to present a rare clinical observation, describe a successful 2-stage neurosurgical treatment of a pregnant patient with glioblastoma complicated by acute occlusive hydrocephalus.Materials and methods. A pregnant woman, 36 years (pregnancy 28–29 weeks), was urgently hospitalized with a suspicion for preeclampsia at a multispecialty hospital with a maternity ward. One day prior to hospitalization the patient developed hypertensive syndrome manifesting through headache, nausea, vomiting, depressed consciousness to stupor, then seizures in the extremities with loss of consciousness.Examination had shown malignant paraventricular tumor of the left temporal and parietal lobes accompanied by perifocal edema, brain dislocation, and acute occlusive triventricular hydrocephalus.Results. Treatment included the following stages: 1) emergency endoscopic third ventriculocisternostomy under local anesthesia, 2) premature delivery per cesarean section, 3) microsurgical resection of the brain tumor. Histological examination diagnosed glioblastoma (grade IV). The patient was discharged with minimal neurological deficiency (elements of motor and sensory aphasia) for administration of chemoradiation therapy.Conclusion. Surgical treatment of a patient with glioblastoma and acute occlusive hydrocephalus in the 3rd trimester can be performed safely and effectively for the mother and fetus in 2 stages. Third ventriculocisternostomy under local anesthesia is recommended as a method of cerebrospinal fluid drainage.
Intraoperative neurophysiological monitoring during thoracoscopic removal of the paravertebral spinal tumor (from practice)
Authors: Grin’ A. A. , Sinkin M. V. , Aleynikova I. B. , Kordonskiy А. Yu. 
Published: January 2019

Bol’shaya Sukharevskaya Sq., Moscow 129090, RussiaThe study objective is to describe the clinical case of intraoperative neurophysiologic monitoring (IONM) using the electromyography-triggered stimulation during the thoracoscopic removal of an extradural Th2–Th3level tumor.Materials and methods. The case describes the removal of the right Th2–Th3pleural cavity paravertebral tumor that has compressed the phrenic nerve. The patient underwent thoracoscopic surgery supported by IONM. An electromyography-triggered stimulation with a monopolar stimulator that was inserted through the thoracoscopic access into the thoracic cavity under video control identified the phrenic nerve. Results. The thoracoscopy in combination with electromyography-triggered stimulation allowed to avoid open surgery. The use of traditional IONM for spinal surgery would not identify the diaphragmatic nerve and prevent its unintentional damage.Conclusion. IONM scenarios can be successfully enhanced with a electromyography-triggered stimulation of the phrenic nerve. Adhesive disposable electrodes for muscle response recording and stimulus return are useful without any deterioration of informativity.
Aneurysms of the pericallosal artery (literature review)
Authors: Grigoryev I. V. , Sen’ko I. V. 
Published: January 2019

The study objective is to analyze scientific sources describing features of surgical treatment of aneurysms of the pericallosal artery (APcA) and unfavorable outcome risk factors.Materials and methods. The analysis included 4 russian and 57 foreign sources.Results and conclusion. Conservative treatment of patients with ruptured APcAs yields unsatisfactory results due to high mortality. Data on surgical outcomes of ruptured APcAs are contradictory: per some sources, they do not differ from results of treatment of cerebral aneurysms of other locations; another sources state that they are worse. The main risk factors are severity per the Hunt–Hess scale ≥IV, large size of intracranial hematoma. Outcomes of surgical treatment of unruptured aneurysms are mostly favorable. Microsurgical clipping allows to achieve favorable results both for ruptured and unruptured APcAs. Due to deep APcA localization, the majority of revascularization surgeries can be performed only using intracranial-to-intracranial bypass. Extracranial-intracranial bypass in the anterior cerebral artery system is rarely performed. For surgical treatment, choice of its timeframe in critically ill patients (grade IV–V by the Hunt–Hess scale) causes difficulties: early surgery prevents repeated hemorrhages, while postponed surgeries eliminate the possibility of affecting this and other factors. There are arguments for preventive exclusion of APcA from blood flow even if its size is <5 mm because of high frequency of APcA ruptures and more severe consequences. For combination of an unruptured APcA with a ruptured aneurysm in another location, either simultaneous exclusion of all aneurysms is performed or two-stage surgery with primary exclusion of the ruptured aneurysm, but the first approach is not always possible. Selection of optimal approach depends on the location of the aneurysm: pterional approach is used for clipping infracallosal aneurysms, variations of interhemispheric accesses – for exclusion of supracallosal aneurysms and aneurysms located at the genu of corpus collosum. Temporary pharmacological cardioplegia is considered a promising method which potentially can replace temporary APcA clipping.
Restoring voice function after open diagonal resection of the larynx
Authors: Kozhanov A. L. , Kozhanov L. G. , Sorokin V. N. , Romanova E. S. 
Published: January 2019

The study objectiveis to perform the acoustic analysis of voice in patients after open diagonal resection of the larynx.Materials and methods. A total of 112 patients underwent diagonal resection of the larynx; of them 73 hadfrontolateral resection and 39 had expanded frontolateral resection. Primary laryngeal cancer was diagnosed in 107 patients; five patients had relapses after radiation therapy. Fifty-six participants underwent acoustic analysis of voice before surgery, 52 participants underwent it 1 month postoperatively, and 112 participants had it after completing their rehabilitation (6 months to 10 years postoperatively). To determine normal acoustic characteristics of voice, we examined 80 men with normal voice. We measured voice fundamental frequency (FF), maximum and minimum FF, FF variability, jitter, shimmer, voice intensity, amplitude of fundamental tone’s harmonics and their difference. Speech rehabilitation included breathing exercises according to E. Ya. Zolotareva and speech training according to S.L. Taptapova.Results.Patients with laryngeal cancer demonstrated significant changes in the acoustic characteristics of their voice (p <0.05) compared to healthy individuals, including increased mean FF (f0) (up to 143 ± 45 Hz vs 118 ± 18 Hz in controls), decreased voice intensity (from 60 ± 8 to 43 ± 8dB), and almost 2-fold decrease in the amplitude of fundamental tone’s harmonics (ω0, 2 ω0, 3 ω0). We also found an increased dispersion and variability of acoustic characteristics assessed compared to healthy individuals. The analysis of long-term treatment outcomes demonstrated more significant improvement of voice acoustic characteristics in patients who underwent speech rehabilitation compared to those who had no rehabilitation.Conclusion.Open resection of the larynx with endoscopic removal of granulations and ligatures and laser restoration of the laryngeal lumen by dissecting the scars complemented by speech rehabilitation allow restoring respiratory function in 91.1 % of patients and restoring voice in 91.8 % of patients (to achieve acoustic characteristics close to normal).
Depression is not the only cause of cognitive impairment in chronic migraine
Authors: Latysheva N. V. , Filatova E. G. , Osipova D. V. 
Published: January 2019

Background. Patients with the chronic migraine frequently present with memory and attention complaints. However, the prevalence and phenotype of such impairment in chronic migraine have not been studied.Objective – to evaluate the prevalence of the objective cognitive deficit in patients with chronic migraine and factors underlying its etiology. Materials and methods. We recruited 62 subjects with chronic migraine and 36 genderand age-matched controls with low-frequency episodic migraine (not more, then 4 headache days per month) aged 18–59. All patients filled in the Hospital Anxiety and Depression Scale (HADS) and Sheehan Disability Scale. Cognitive function was assessed with the Montreal Cognitive Assessment (MoCA), Digital Symbol Substitution Test (DSST), Rey Auditory Verbal Learning Test (RAVLT), and the Perceived Deficits Questionnaire (PDQ-20).Results. In this study 58 % of patients with chronic migraine complained of memory loss. Cognitive impairment was also found with PDQ-20. Objectively, we found a significant decrease in 90-second DSST results and RAVLT total recall and learning rate. In 40 % of subjects with chronic migraine scored lower than 26 points on MoCA. Patients with chronic migraine more frequently had lower DSST rates as compared to episodic migraine (odds ratio 5.07 (95 % confidence interval – 1.59–16.17); p = 0.003). Depression and anxiety did not correlate with performance on cognitive tests. Chronic migraine (frequent headache) and longer headache history, but not depression, anxiety or medication overuse were independent predictors of cognitive impairment.Conclusion. Subjective and objective cognitive deficits are prevalent in the chronic migraine population. Most often memory and attention are impaired. Longer headache history and presence of chronic migraine are independent risk factors for cognitive impairment in patients with chronic migraine.
FACTORS ASSOCIATED WITH THE PREVALENCE OF ARTERIAL HYPERTENSION IN THE GENERAL WORKING AGE POPULATION
Authors: Kaveshnikov V. S. , Serebryakova V. N. , Trubacheva I. A. 
Published: January 2019

Aim.To determine the factors associated with the prevalence of arterial hypertension (AH) in the unorganized urban population of working age.Methods. Random sample drawn from adult urban population aged 25–64 years (n = 1600, 59%-women) was examined in the standardized cardiologic screening program. The following associative factors were analyzed: age, family status, level of education and income; excessive salt consumption (ESC), low physical activity, alcohol consumption; family history of AH; anxiety/depression (HADS); smoking, body mass index (BMI), heart rate (HR). Logistic regression was used to analyze the relationships. A p value of <5% was considered statistically signifcant.Results.After adjustment for age, the odds for AH were higher in men (OR = 1,57, p<0,001) with the maximum gender effect found in 35–44 years (OR = 3,66, p<0,001). In the singlefactor analysis, age, BMI, family history of AH, HR and ESC were the most signifcant risk factors for AH in men. Secondary education and clinical anxiety in addition with the above-mentioned ones increased odds for AH in women. In the multivariable model, age, BMI, family history of AH and HR were associated with high AH prevalence in men. In women, these factors included age, BMI, family history of AH, HR, ESC, middle education and clinical anxiety. Out of the other modifable risk factors, BMI contributed greatly to the variability in AH prevalence in the examined population.Conclusion.The obtained fndings provides novel data on the comparative signifcance of the studied risk factors. The efforts to prevent excessive weight gain and dietary salt consumption seem promising to reduce AH prevalence in the population. Further studies focusing on the role of genetic, behavioral, and environmental factors for AH development will ensure the establishment of more effective, accurate and personalized prevention approaches in the future.