bluuebunny/crossref_metadata_2025_split huggingface dataset:
Analysis of the impact of economic activity on atmospheric air quality in Ulan-Ude
Authors: Ayusheeva S N , Botoeva N B , Mikheeva A S 
Published: August 2019

Abstract
The growth of negative environmental impact requires increased attention to the processes of air protection. In recent years, significant imbalance of the biosphere has been clearly observed. This study proved a significant excess of negative environmental impact of Ulan-Ude in comparison with assimilation potential of the environment. Ulan-Ude, which is annually included in the list of the most polluted cities in Russia in terms of the level of atmospheric pollution, this problem is mainly due to the processes associated with the generation of electricity and motor transport. Very high concentrations of benzo[a]pyrene (hazard class 1), formaldehyde (hazard class 1) and particulate matter in Ulan-Ude contribute to an increase in the incidence of children and adults. High depreciation of environmental protection equipment, insufficient expenditures on atmospheric protection measures, and comparability of payments for normative and excessive pollution determine the inefficiency of the existing environmental policy.
Economical and geographical analysis of the demographic situation in the Baikal region
Authors: Zangeeva N R , Badmaev A G , Ayusheeva V G 
Published: August 2019

Abstract
The Baikal region is an integral regional settlement system. Modern social and economic transformations have had a significant negative impact on the demographic situation in the region. Low level of social and economic development, raw material orientation of the economy, vulnerable cross-border situation, depopulation, aging and outflow of population, all of this endanger the sustainable development of the region. The paper considers the spatial and temporal dynamics of demographic processes, reveals the trends of decrease in the population of the territory due to unfavorable demographic and migration situation.
Lipid biomarkers in paleoreconstruction of lake sedimentogenesis
Authors: Ts Pintaeva E 
Published: August 2019

Abstract
Lakes are important paleoenvironmental archives retaining abundant information due to their typical high sedimentation rates and susceptibility to environmental changes. Lipid biomarkers distributions in surface sediments were determined using gas chromatography (GC) and GC-mass-spectrometry in order to investigate the lipid biomarkers signature in sediments of four lakes of the Baikal region. They are linked to autochthonous and/or allochthonous sources, which can lead to distinct lipid molecular distributions. Lipid biomarkers of terrestrial origin (i.e. high-molecular weight n-alkanoic acids, n-alkanols, dicarboxylic acids, β-sitosterol) and aquatic source (i.e. short chain fatty acids, hydroxy fatty acids, etc.) were detected in all lakes in different ratios. The results of this study show the compatibility of different lipid biomarkers in assessing the origin of organic matter. Therefore, lipid molecular proxies in combination with molecular distribution of n-alkanes, dD or D/H ratios, palynological studies, etc. can be applied as paleoclimate and paleoenvironment proxies.
Chemical composition of surface water in the main tributaries of Lake Baikal – the Selenga and the Barguzin Rivers
Authors: Bazarzhapov Ts Zh , Shiretorova V G , Radnaeva L D , Suocheng D , Tulokhonov A K 
Published: August 2019

Abstract
Lake Baikal is one of the oldest fresh water bodies on the planet, where the largest available water reserves are concentrated. River runoff plays an important role in the overall balance of substances entering the Lake. The Selenga River is the main tributary of Lake Baikal, in the basin of which, unlike other tributaries, a large number of industrial, agricultural, processing enterprises, settlements and cities are concentrated. The Barguzin River is the third largest river flowing into Lake Baikal, is the basin where intensive development in agriculture and forestry has undertaken. This paper presents the results of the analysis of surface water samples of the Selenga and Barguzin rivers collected during 2015-2016. In 2015, the water level for the Selenga and Barguzin rivers was characterized by extremely low water content, which caused an increase in the concentrations of major ions and trace elements in surface waters. The more favorable water regime in 2016 caused a significant decrease in ion concentrations. Maximum concentrations of iron and manganese are observed in winter and during flooding in the spring. In conditions of low water content, increased copper and zinc contents were also observed in the surface water of the Lake tributaries.
Application of biological preparation for bioremediation of oil-contaminated soils of the tank farm
Authors: Popova N I , Glyaznetsova Yu S , Erofeevskaya L A 
Published: August 2019

Abstract
The paper presents the results of an experiment on the biological purification of permafrost soils from oil pollution with use biological preparations on the basis of hydrocarbon-oxidizing microorganisms. Biological preparations were used in two modifications - in liquid form as a suspension and in dry form as a suspension immobilized on organic granules. It has been established that dry form of a biological preparation is more effective for the purification of permafrost soils from oil than a liquid microbial suspension. For 1 month in dry conditions and a strongly alkaline soil environment, the use of a dry biological preparation allowed reducing the concentration of oil pollution by up to 60 %. The change of the chemical structure of extracts of soil samples was investigated with use the method of IR-Fourier spectroscopy. The increase of the relative absorption coefficients of oxygen-containing groups and bonds pointed (indicated) on the course of oxidative destruction.
Anti-corrosion action of the extract of the larix sibiric barrus with different methods applying on the surface of metal
Authors: Kuzmina I E , Fedorova A I 
Published: August 2019

Abstract
This article provides a method of the larch bark extract applying on a metal surface and also determining its anticorrosive protective action. It has been established that the protective effect of the larch bark extract was 37.5%, and when applying the extract after phosphoric acid, the protective effect increases to 65%, since the formed iron phosphates, having a porous structure, are a good primer and increase the adhesion of the rust converter. The sequence of the solutions application was determined: firstly, phosphoric acid and only after that the extract of larch bark. This sequence of components application leads to an improvement of the anticorrosion characteristics of the studied extract: at the same time, the protective effect of the extract Z and the inhibiting factor of corrosion γ increase 1.7-1.8 times.
Bioresorbable polymer matrices impregnated with BMP-2
Authors: Minaeva S A , Antonov E N , Vasilyev A V , Bukharova T B , Galitsina E V , Popov V K 
Published: August 2019

Abstract
Bioresorbable matrices from poly(lactic-co-glycolic acid) containing therapeutically significant concentrations of bone morphogenetic protein 2 (BMP-2) was formed by super-critical fluid encapsulation and surface-selective laser sintering. Biocompatibility of these matrices and the kinetics of BMP-2 release from their volume into physiological saline was investigated. It was shown experimentally that the release of BMP-2 was almost uniform for 15 days. The subsequent use of laser sintering contributed to a longer retention of BMP-2. High cytocompatibility of the obtained matrices with cultures of mesenchymal stem cells was shown in vitro.
Total saikosaponin content in some species of Bupleurum L
Authors: Tykheev Zh A , Taraskin V V , Radnaeva L D , Zhang F Q , Chen S L 
Published: August 2019

Abstract
The aim of this study was to determine the total saikosaponin content in some species of Bupleurum L. genus. For the first time, the saikosaponin content was investigated in roots of B. scorzonerifolium from Buryatia and Mongolia. The differences in the quantitative content of saikosaponins in the B. scorzonerifolium roots can be explained by the possible polymorphism of this plant. Dynamic change of the total saikosaponin content in roots of B. scorzonerifolium in different phenophases didn’t undergo significant changes. The total saikosaponin content was at the highest level in the roots of B. bicaule.
Oil filled polymer composites based on ultrahigh-molecular-weight polyethylene
Authors: Nikiforov L A , Efimova T E , Okhlopkova T A 
Published: August 2019

Abstract
In recent years, a method of increasing the frictional properties of polymeric materials by introducing liquid lubricating oils into their composition has become widespread. The aim of this work is to create new wear-resistant polymer composite materials based on ultrahigh-molecular-weight polyethylene (UHMWPE) with liquid-phase filling. When UHMWPE is filled with lubricating oil, there is an increase in wear resistance by 4 times compared with the original UHMWPE.
The sustained-release effect of triple anti-tuberculosis drugs carried by calcium sulfate/poly-amino acid compound materials in bone tuberculosis lesion
Authors: Wang Na , Zou Yongyan , Yang Kang , Wang Jinguo 
Published: August 2019

Abstract
This article is to review the research progress of the sustained-release effect of triple anti-tuberculosis drugs carried by calcium sulfate/poly-amino acid compound in bone tuberculosis lesion, and to investigate the biocompatibility, sustained-release and antituberculosis properties of calcium sulfate/poly-amino acid compound materials from the aspects of tissue engineering modification. Papers from January 2000 to February 2019 are retrieved in PubMed database and Web of Science database. Searching words are “bone tuberculosis, biocompatibility, sustained release, anti-tuberculosis, calcium sulfate/poly-amino acid”. A total number of 26 articles were included. After the artificial sustained release system of calcium sulfate/poly-amino acid containing triple anti-tuberculosis drugs was put into the bone tuberculosis lesion, the anti-tuberculosis drugs could be released slowly and continuously for up to three months according to results of the related papers. This locally sustained release effect is caused by the direct diffusion of anti-tuberculosis drugs from the carriers and the dispersion of drugs caused by the exposure of drug groups between calcium sulfate crystals after the degradation of the artificial material. The drug concentrations of the three antituberculosis drugs in the bone and lumbago major muscle tissues at each detection time point were higher than those in venous blood. Three anti-tuberculosis drugs carried by calcium sulfate/poly-amino acid compound can be simultaneously released and sustained-released into the bone lesion. It is more efficient and faster to kill tuberculosis bacillus than the single-drug slow-release material which was previously studied, and consistent with the principle of using anti-tuberculosis drugs.
Study on the application of embolization materials of polyvinyl alcohol particles
Authors: Wang Na , Gao Jialin , Wu Yu , Han Wei 
Published: August 2019

Abstract
The application, advantages and disadvantages of PVA particle embolization materials were analyzed retrospectively, and the correlation between the application field and the choice of embolization materials was discussed, which provided a reference for clinical treatment. Relevant literatures in PubMed and Web of Science databases were searched, and the literature on clinical application and experimental research of embolic materials was systematically evaluated. The embolization mechanism, advantages and disadvantages, and clinical application of PVA particle embolization materials were discussed. Polyvinyl alcohol particles are such kind of polymer material that insoluble in water, high expansion coefficient, mechanical embolization of blood vessels, no sensitization reaction, no systemic acute toxicity, no intradermal stimulation reaction, safe and effective use. The adhesive liquid embolism material has no vascular toxicity and has been widely used. The application and upgrading of thrombolytic surface materials can significantly improve the blood compatibility of the materials. All kinds of embolic materials have their own advantages and disadvantages, and none of them can be suitable for all diseases. Therefore, it is very important to choose suitable embolic materials for safe and effective treatment.
Investigation on the water resistance of the fly-ash modified magnesium phosphate cement
Authors: Sun Sihui , Liu Runqing , Zhao Xingke , Zhang Yao , Yang Yuanquan 
Published: August 2019

Abstract
In order to improve the water resistance of magnesium phosphate cement (MPC), the flexural strength, compressive strength, strength retention rate and mass retention rate under different immersion conditions, were tested by XRD and SEM methods by adding 30%, 35%, 40%, 45% and 50% fly ash. The mechanism of fly ash improving the water resistance of magnesium phosphate cement was analyzed. The results show that when fly ash content is 35%, the mechanical properties of magnesium phosphate cement (MPC) reach the optimal, and the strength retention rate and mass retention rate are improved. Fly ash modified by magnesium phosphate cement produces no new hydration products. After it is soaked in water, a large number of flake like k-struvite are produced on the surface of MgO particles. Few cracks forms on the surface, which reduces the porosity and enhances the compactness, thus improving the water resistance of MPC cement.
Effect of particle size distribution of slag on the strength and pore structure of low-temperature concrete
Authors: Li Yao , Teng Na , Liu Runqing , Cui Yunpeng 
Published: August 2019

Abstract
In order to study the effect of particle size distribution of slag on strength and pore structure of the concrete at low temperature, the particle sizes of slag were divided into four grades, namely, 5∼10 μm, 10∼15 μm, 15∼20 μm and 20∼26 μm. The influence of particle size distribution of slag on the compressive strength and pore structure of low temperature concrete cured for 3 days, 7 days and 14 days were analyzed. The results show that different particle size distribution of slag leads to different pore structure and strength of concrete. When the slag with the size is of 10∼15μm, the concrete obtains the best performance, regardless of curing temperature. In addition, the decreasing granularity of slag improves the pore structure and increases the density of concrete.
Metal fault analysis and preventive measures for grounding accessories of 110kV cable outdoor terminal
Authors: Xie Y , Yang L , Li W , Liu Y L 
Published: August 2019

Abstract
There were three grounding metal faults of the 110 kV outdoor cable terminals, i.e., cracked weld between grounding copper block and the cable tail pipe, no fastened grounding copper block connecting bolt and no fixed grounding wire connected to the grounding copper block, respectively. Precautionary measures were proposed from three stages of design, including installation, operation and maintenance. It was recommended to improve the welding design during the design phase. In the installation stage, it was necessary to strictly control the construction quality control, attach importance to the connection of bolts and gaskets, and improve the fixing of the grounding wire. For the operation and maintenance phase, it was important to strengthen the targeted inspection of the grounding point of the cable terminal and the grounding wire, and to non-destructively test the quality of the weld during the power failure maintenance, which was an effective measure to ensure the safe operation of the grounded metal.
Research on rapid qualitative detection of lead in pyrotechnic powder used for fireworks and firecrackers
Authors: Wu Junyi 
Published: August 2019

Abstract
This study discloses a method for qualitatively quick detecting the leading element for fireworks and firecrackers based on energy dispersive X-ray fluorescence spectrometer (EDXRF), including the following steps: preparation of samples, establishment of detection methods, determination of the characteristic line fluorescence intensity values of Sb element in samples. The method of the study has the advantages like that: (1) the method is simple to operate, and the method can be repeatedly called for testing. Only one new test method needs to be built before the sample test. After the method is established, the test can be repeated at different times without re-establishing the test method for each test. After the first establishment of the new test method, the entire test process only includes three steps: sample preparation, sample loading into the sample cup and on-board testing. (2) The detection period is extremely short. After the sample is prepared, the entire measurement process takes only about 2 minutes. (3) Labor intensity is very low and the requirements for operators are not high. (4) The method has good stability, good repeatability and high credibility.
Fracture failure analysis of driving crankshaft of substation circuit breaker
Authors: Li D K , Liu X , Duan M C , Yang J W , Xie Y 
Published: August 2019

Abstract
Fracture failure analysis of the driving crankshaft of a substation circuit breaker was conducted by means of macroscopic inspection, magnetic particle testing, spectroscopic analysis, mechanical property test and metallographic examination. The analysis results show that the fractured crankshaft is in the cast state, the manufacturer has not carried out follow-up heat treatment after casting, and there are large residual stresses and even cracks in the castings. Finite element analysis shows that the new driving crankshaft produced by Q235-A forged steel plate has higher safety performance and can replace the driving crankshaft produced by casting process.
B-23 Non-Motor Symptom Profile in Parkinson’s Disease Patients and its impact on Quality of Life
Authors: Sabbah-Talasazan L , Miller J , Wertheimer J 
Published: August 2019

Abstract

Objective
Non-motor Symptoms (NMS) in Parkinson’s Disease (PD) are known to be diverse and may include cognitive, psychiatric and sleep disturbance, fatigue, and autonomic disorders (e.g., cardiovascular dysregulation, orthostatic hypotension, thermo-dysregulation, sexual dysfunction, urinary and bowel dyscontrol). The aim of this study was to define the NMS profile in a large sample of PD patients with and without Deep Brain Stimulation (DBS) and its impact on quality of life (QOL).

Method
Cross-sectional, survey-based research design was used. 1,164 individuals with PD participated in this survey: 275 participants who underwent DBS and 889 without DBS. Participants completed the Non-Motor Symptom Scale (NMSS) and answered questions assessing the impact of NMS on everyday life. Participants were divided into younger (ages 50-69) and older (ages 70+) age cohorts and disease duration cohorts with early stage ( < 6 years) and advanced stage (6-10 years; 11+ years) groups.

Results
24 out of 31 NMS categories were experienced by more than 50% of the participants. Urination difficulty, fatigue, sleep, constipation, and cognitive difficulties were symptoms most frequently reported to adversely impact day-to-day living, and cognitive difficulties followed by sleep disturbance had the strongest impact to quality of life.

Conclusions
NMS burden drives quality of life for many individuals and has remained a relatively new frontier for exploration, at least in depth and scope as it relates to assessment and treatment of NMS. Management of NMS remains an unmet need for individuals with PD. Implications for neuropsychologists are discussed.
B-32 The Use of Repeat Neuropsychological Assessment to Guide Treatment of Possible Normal Pressure Hydrocephalus in a Complex Case
Authors: Schneider S , Weiss E , Facchini R , Shagalow S , Jacobs S , McGinley J , Masur D 
Published: August 2019

Abstract

Objective
Normal Pressure Hydrocephalus (NPH) is a condition that is characterized by the buildup of cerebrospinal fluid (CSF) in the brain that can cause urinary incontinence, gait disturbance, and cognitive impairment. NPH can be progressive but may be managed or reversed with shunt placement. External Lumbar Drainage (ELD) trials in determining if shunt placement is appropriate are common, but the role of repeat neuropsychological assessments during ELD procedures is not well documented in the literature. Repeat, pre-, peri and post- ELD trial, assessment in a complex case of possible NPH is presented.

Method
33-year-old Hispanic English-Speaking female with cognitive/memory complaints following intraventricular hemorrhage (IVH) secondary to vasculopathy was initially seen for post IVH outpatient neuropsychological evaluation. MRI showed enlarged ventricles/communicating hydrocephalus and workup for NPH was initiated. Repeat inpatient evaluations were completed during the ELD trial, with annual outpatient neuropsychological follow-up.

Results
Gait evaluation was inconclusive. Inpatient testing demonstrated minor improvement immediately following ELD opening, but performances were variable across the 4 days of re-evaluation. Shunt placement was rejected due to neuropsychological findings. Outpatient follow-up of patient over several years has demonstrated mild improvement and not evidence of cognitive decline since ELD trial.

Conclusions
Assessment of cognitive functioning in outpatient and inpatient settings before, during, and for several years following ELD testing was beneficial to ascertain the decision not to place a shunt. Repeat neuropsychological assessment in inpatient and outpatient settings provided crucial information for guiding treatment decisions.
B-40 Language Performance Is Indirectly Related to Social Functioning through Schizotypal Traits
Authors: Angers K , Suhr J 
Published: August 2019

Abstract

Objective
Individuals with schizotypy have personality traits similar to clinical symptoms of schizophrenia (SZ) but do not meet diagnostic criteria for SZ. One core deficit observed in individuals with SZ and schizotypy is social impairment (SI), although underlying mechanisms of SI are not well understood. Research suggests that, in individuals with SZ, neurocognition is indirectly related to functional outcomes through clinical symptoms. Across the SZ spectrum, cognitive deficits precede the development of both clinical symptoms and SI. Thus, there is reason to believe that in schizotypy, cognitive functioning may also be indirectly related to social functioning through schizotypal traits. However, this relationship has not yet been explored.

Method
The present study examined the relationships among language performance, schizotypal traits, and social functioning in an undergraduate sample (n = 133). Schizotypal traits were measured by the Schizotypal Personality Questionnaire which was used to create high (n = 57) and low (n = 66) schizotypy groups.

Results
High schizotypy reported greater SI (p < .001) than low schizotypy, but groups did not differ on language performance (all p’s >.05). In the high group only, schizotypal traits were negatively related to performance on some language tasks (p < .01), and to self-reported social functioning (p < .01); and, an indirect relationship between language performance and social functioning through schizotypal traits was observed (B = 13.86, 95% CI [2.87, 28.67]).

Conclusions
Findings are similar to those observed in SZ and may improve understanding of the mechanisms of SI to better target treatment efforts in SZ spectrum populations.