bluuebunny/crossref_metadata_2025 huggingface dataset:
Interval assessment using task- and procedure-based simulations: an attempt to supplement neurosurgical residency curriculum
Authors: Sharma Ravi , Katiyar Varidh , Narwal Priya , Kale Shashank S. , Suri Ashish
Published: August 2022

OBJECTIVE

The longer learning curve and smaller margin of error make nontraditional, or "out of operating room" simulation training, essential in neurosurgery. In this study, the authors propose an evaluation system for residents combining both task-based and procedure-based exercises and also present the perception of residents regarding its utility.

METHODS

Residents were evaluated using a combination of task-based and virtual reality (VR)–based exercises. The results were analyzed in terms of the seniority of the residents as well as their laboratory credits. Questionnaire-based feedback was sought from the residents regarding the utility of this evaluation system incorporating the VR-based exercises.

RESULTS

A total of 35 residents were included in this study and were divided into 3 groups according to seniority. There were 11 residents in groups 1 and 3 and 13 residents in group 2. On the overall assessment of microsuturing skills including both 4-0 and 10-0 microsuturing, the suturing skills of groups 2 and 3 were observed to be better than those of group 1 (p = 0.0014). Additionally, it was found that microsuturing scores improved significantly with the increasing laboratory credits (R2 = 0.72, p < 0.001), and this was found to be the most significant for group 1 residents (R2 = 0.85, p < 0.001). Group 3 residents performed significantly better than the other two groups in both straight (p = 0.02) and diagonal (p = 0.042) ring transfer tasks, but there was no significant difference between group 1 and group 2 residents (p = 0.35). Endoscopic evaluation points were also found to be positively correlated with previous laboratory training (p = 0.002); however, for the individual seniority groups, the correlation failed to reach statistical significance. The 3 seniority groups performed similarly in the cranial and spinal VR modules. Group 3 residents showed significant disagreement with the utility of the VR platform for improving surgical dexterity (p = 0.027) and improving the understanding of surgical procedures (p = 0.034). Similarly, there was greater disagreement for VR-based evaluation to identify target areas of improvement among the senior residents (groups 2 and 3), but it did not reach statistical significance (p = 0.194).

CONCLUSIONS

The combination of task- and procedure-based assessment of trainees using physical and VR simulation models can supplement the existing neurosurgery curriculum. The currently available VR-based simulations are useful in the early years of training, but they need significant improvement to offer beneficial learning opportunities to senior trainees.
Spinal intraosseous arteriovenous fistulas with perimedullary drainage associated with vertebral compression fracture: illustrative case
Authors: Baba Hiroshi , Kiyosue Hiro , Ide Satomi , Onishi Kouhei , Kubo Takeshi , Tokuyama Kohei
Published: August 2022

BACKGROUND

Although osseous involvement is occasionally observed in spinal epidural arteriovenous fistulas (AVFs) or seen as a part of diseases of spinal arteriovenous metameric syndrome, purely intraosseous spinal AVFs are extremely rare. Their clinical and imaging characteristic features are not well known. The authors present a case of purely intraosseous AVFs associated with compression fracture.

OBSERVATIONS

A 76-year-old man presented with back pain and progressive myelopathy. Computed tomography showed compression fracture of the T12 vertebral body and dilatation of perimedullary veins. Spinal angiography revealed an intraosseous AVF at the T12 spine level, which was fed by multiple feeders of ventral somatic branches and drained into the paravertebral and perimedullary veins. The intraosseous AVF was completely occluded by the combined techniques of transarterial and transvenous embolization with glue and a coil. The symptoms disappeared within 1 month after embolization.

LESSONS

Although extremely rare, spinal intraosseous AVFs can develop after compression fracture and cause congestive myelopathy. Combined transarterial and transvenous embolization is useful for the specific case of spinal intraosseous AVFs with both paravertebral and perimedullary drainage.
Management of traumatic sacral spondyloptosis: illustrative case
Authors: Tracz Jovanna A. , Judy Brendan F. , Sacino Amanda N. , Bydon Ali , Witham Timothy F.
Published: August 2022

BACKGROUND

Grade V spondylolisthesis, or spondyloptosis, is a complication of high-energy trauma that is most commonly reported at the lumbosacral junction. Sacral intersegmental spondyloptosis is extremely rare. The authors present a case of spondyloptosis of S1 on S2 with a comminuted fracture of S2 and complex fractures of the L4 and L5 transverse processes, resulting in severe stenosis of the lumbosacral nerve roots.

OBSERVATIONS

The patient was a 70-year-old woman with a history of a fall 3 weeks prior and progressive L5 and S1 radiculopathy. Instrumentation and fusion were undertaken, extending from L3 to the pelvis because degenerative stenosis at L3–4 and L4–5 was also found. Reduction was achieved, leading to diminished pain and partial resolution of weakness.

LESSONS

Traumatic sacral spondyloptosis adds a degree of difficulty to reduction, fixation, and fusion. The technique presented herein achieved sagittal realignment via a distraction maneuver of S1–2 in which rods were attached to bilateral dual S2 alar-iliac screws with reduction screws placed at S1, ultimately pulling L5 and S1 up to the rod for fixation.
Resection of a rare giant chondromesenchymal hamartoma of the scalp with intracranial blood supply in an adult woman: illustrative case
Authors: Guadarrama-Ortiz Parménides , Choreño-García Omar , Capi-Casillas Deyanira , Román-Villagómez Alondra , Alcocer-Villanueva Homero , Almendárez-Sánchez César Adán , Choreño-Parra José Alberto
Published: August 2022

BACKGROUND

Nasal chondromesenchymal hamartomas (NCMHs) are benign, slow-growing lesions formed by mesenchymal and cartilaginous components. They occur predominantly in male infants at the nasopharynx and orbit. Rare cases have been reported in adults. Ectopic NCMHs occurring in other head regions without the typical nasopharyngeal or orbital involvement have not been previously described.

OBSERVATIONS

The authors presented the case of a 40-year-old woman with a giant mass in the left frontoparietal region that started to enlarge progressively after the patient’s first pregnancy at the age of 21 years. The tumor caused intense headaches, nausea, vomiting, asthenia, and syncope. On admission, the neurological examination revealed no abnormalities. Brain magnetic resonance imaging showed a solid homogeneous tumor without intraaxial involvement extending inferiorly to the left zygomatic arch, with a significant mass effect on the adjacent bones but no infiltration. Remarkably, digital subtraction angiography demonstrated that the tumor received blood supply from superficial as well as intracranial branches of the left vertebral artery. After tumor resection, histopathological analysis revealed characteristics indistinguishable from an NCMH.

LESSONS

The authors described a rare NCMH of the scalp with intracranial blood supply in an adult patient. A case with similar characteristics had not been reported before.
A low score on the National Institutes of Health Stroke Scale with eye movement disorder may indicate a good candidate for acute mechanical thrombectomy for posterior circulation large vessel occlusion: illustrative cases
Authors: Yamazaki Naoya , Kimura Naoto , Doijiri Ryosuke , Takikawa Kohei , Sonoda Takuji , Oi Kiyotaka , Uchida Hiroki , Yokosawa Michiko , Sugawara Takayuki , Kikuchi Takahiko
Published: August 2022

BACKGROUND

Basilar artery occlusion (BAO) accounts for 1% of all strokes, and its natural prognosis is extremely poor. There is no consensus on the treatment strategy for mild BAO.

OBSERVATIONS

Between August 2015 and May 2021, 429 patients received mechanical thrombectomy (MT) in the authors’ hospital. Three patients had a BAO with a National Institutes of Health Stroke Scale (NIHSS) score of ≤6 and showed eye movement disorder as the main symptom. MT immediately improved ocular symptoms in all three cases, and the patients were discharged with a modified Rankin Scale ≤2.

LESSONS

Lesions responsible for the eye movement disorder are distributed from the midbrain to the pontine tegmentum. These lesions are supplied by the arteries of the interpeduncular fossa, which is impaired by BAO. Symptoms due to problems with the arteries of the interpeduncular fossa can be rapidly improved by MT, and it is useful for preventing neurological deterioration in mild cases. BAO with a low NIHSS score in the presence of eye movement disorder as the main symptom may be a good indication for MT.
Évolution de la causalité chez des enfants francophones
Authors: Martinot Claire
Published: August 2022

A partir de la restitution individuelle par 15 enfants de 6 et 8 ans d’une histoire qui vient de leur être lue, l’auteur montre une nette évolution entre 6 et 8 ans de la compréhension et de la production des 13 relations causales (RC) contenues dans le TS (texte source). Les 13 RC du TS sont identifiées par cinq marqueurs : lien sémantique (RC non marquée), marque morphologique (opposition présent/futur), marque syntaxique non spécifique au marquage causal (par, qui, à l’idée de …), marque lexicale (verbe devenir), marque syntaxique explicite (parce que). Les RC produites par les enfants sont systématiquement comparées aux RC du TS. Un premier résultat quantitatif montre que sur l’ensemble de toutes les RC pouvant être produites, les enfants de 6 ans en comprennent un quart tandis que les enfants de 8 ans en comprennent plus du tiers. Au niveau de l’ensemble des RC produites, les enfants de 6 ans expriment d’une façon ou d’une autre un peu plus du tiers des RC du TS et les 8 ans un peu plus de la moitié. Les 8 ans sont plus nombreux que les 6 ans à avoir modifié le sens de certaines RC. Ils expriment également la RC du TS avec un autre marqueur beaucoup plus souvent que les 6 ans. La plupart des marqueurs syntaxiques non spécifiques posent encore de nombreux problèmes de production aux 8 ans.
Argumentative Values of Causality in French Constructions Like s’il échoue, c’est qu’il n’apprend pas ses leçons
Authors: Mounga Bauvarie
Published: August 2022

Our paper focuses on the expression of causality, in particular its argumentative values in French constructions like s’il échoue, c’est qu’il n’apprend pas ses leçons. It should be noted that this type of constructions if P, Q, is observable when if P is factual, i.e. when the proposition P does not necessarily express a hypothesis as is generally the case, but an event that has happened or is going to happen. Thus, we find concessional, adversarial, additive and emphatic if P, Q systems. However, in the context of our paper, we will only devote ourselves to causative if-constructions. Our work will be structured in three parts. First, we will highlight the functioning of causality in factual if-constructions, then the enunciative postures generated by causality and finally the self-presentation of the speaker in French causative non hypothetical constructions.
Developing an English Mobile App by Adapting Gender Education Values for English Language Teaching
Authors: Adisti Aprilian Ria , Guritno Agung
Published: August 2022

The desire to promote gender equality and women’s empowerment is reflected in Indonesia as a mark of the country’s support for the global initiatives of the United Nations Millennium Declaration. In reality, the data shows that Indonesian women are still lagging compared to men in the education aspect. Hence, the values of gender education and women empowerment could be internalized in all subjects at school, one of them being English Language Teaching (ELT). This study aims at designing, developing, and adapting gender equality and women empowerment values into the mobile app for ELT for teaching descriptive text for 7th-grade students in Junior High Schools. This research implemented Research & Development which used interviews and questionnaires as the instruments. There were three stages applied in this research adopted from Thiagarajan, Semmel, and Semmel (1974) which were defined, designed, and develop. The result showed that the results of expert validation showed that this mobile app is feasible to be implemented. Furthermore, this simple mobile app can integrate the values of gender equality and women empowerment through descriptive texts in English Language Teaching for grade 7th Junior High School.
Obtaining substituted phenol derivatives with potential antimicrobial activity
Authors: Sokhraneva V. A. , Yusupova D. A. , Boriskin V. S. , Groza N. V.
Published: August 2022

Objectives. With the growing resistance of pathogenic microorganisms to antibiotics, the development of new antimicrobial drugs offering specific mechanisms of action becomes an urgent task. Only few antimicrobials offer a broad spectrum of activity against gram-positive and gram-negative bacteria, molds, and yeasts. In this regard, the purpose of the work was to develop methods for synthesizing biologically active derivatives of alkyl-substituted phenols (reactions at the hydroxy group) to study their biological effect.

Methods. The synthesis of imidazole acetates of substituted phenols was carried out in two stages. At the first stage, the chloroacetyl derivative of the selected compounds was obtained, to which imidazole was then added. O-acylation reactions at the first stage of the synthesis were carried out under varying conditions. The first version of the synthesis was carried out using chloroacetyl chloride as an acylating agent together with a high-boiling solvent. In the second variant, chloroacetic anhydride was used, along with an attempt to replace the solvent with a low-boiling one. A thymol methoxy derivative was additionally synthesized by a known method using methyl iodide and varying the reaction parameters.

Results. The parameters of chloroacetylation and methoxylation of aromatic alcohols were optimized with rational selection of solvents and the ratio of reagents in the reactions. Synthesized thymol (2-isopropyl-5-methylphenol) and propofol (2,6-isopropylphenol) derivatives contained imidazole as an additional pharmacophore with affinity for microorganism cell membrane proteins. A thymol methoxy derivative comprising an aromatic ether exhibiting increased hydrophobicity was also obtained. The synthesized compounds were characterized by NMR spectroscopy.

Conclusions. Chloroacetyl derivatives of aromatic alcohols can be effectively synthesized by cooling the reaction mixture using an excess quantity of an acylating agent and increasing the reaction time (compared to literature data). The yield of thymol chloroacetate was 75%, while that of propofol chloroacetate was 30%. This can be explained by the sterically hindered reaction of the propofol alcohol group, which has isopropyl substituents at the second and sixth positions of the benzene ring.
Validation of a method for the quantitative determination of narcotic and psychotropic substances in urine by UHPLC–MS/MS
Authors: Savelieva N. B. , Ishutenko G. V. , Polosin A. V. , Radus F. V. , Polyansky D. S. , Kurbatkin S. A. , Efimova Yu. A. , Postnikov P. V.
Published: August 2022

Objectives. To validate a new method for the quantitative determination of 31 potent and narcotic substances and their metabolites in urine that meets the requirements of ISO/IEC 17025 using a fast and highly sensitive method of chromato-mass spectrometry with a view to introducing such a method into the routine practice of the National Anti-Doping Laboratory of the Lomonosov Moscow State University (NADL MSU).

Methods. Urine samples soldered with standard solutions were analyzed using ultra high performance liquid chromatography-tandem mass spectrometry (UHPLC–MS/MS).

Results. Diagnostic precursor/ion-product pairs and collision energies were established to allow unambiguous identification of the analyzed substances. During sample preparation, hydrolysis conditions were optimized. Selectivity, linearity, limits of qualitative determination, limit of quantitative determination (established under the contract with the customer firm), matrix effect, and measurement uncertainty were defined. Systematized data grouped by classes of analytes are given in the final table.

Conclusions. The important advantages of the presented technique are the absence of complex and lengthy sample preparation, as well as the short time of the analysis method (about 10 min), which can significantly reduce duration along with labor and analysis costs. The addition of new analytes will ensure the versatility of the technique, as well as expanding its scope.
Collective dynamics of domain structures in liquid crystalline lipid bilayers
Authors: Kadantsev V. N. , Goltsov A. N.
Published: August 2022

Objectives. Numerous studies of biosystems indicate the distinct role of quasi-one-dimensional molecular structures in the transport of energy, charges, and information. Of particular interest are the studies on the collective dynamics of quasi-one-dimensional lateral structures in liquid crystalline membranes and the possibility of local excitation transfer through such structures. In this paper, we developed a model for the collective dynamics of quasi-one-dimensional domain structures in lipid bilayers interacting with the environment. The objective is to study the mechanisms of the directed energy transport in liquid crystalline lipid membranes.

Methods. In this paper, the percolation domain structures formed as a result of phase separation in multicomponent lipid membranes are considered to be quasi-one-dimensional domain structures. The model distinguishes two subsystems interacting with each other and differing in their structural and dynamic properties, i.e., the membrane surface formed by polar groups of lipid molecules and the internal hydrophilic region of the membrane formed by acyl chains of lipids. The acyl chain subsystem is simulated using the Ginzburg-Landau Hamiltonian which considers the dependence of its dynamics on temperature close to the lipid melting phase transition temperature Tc.

Results. Analysis of dynamic states has shown that elastic excitations moving at constant rate in the form of solitons may exist near temperatures Tc in the considered quasi-one-dimensional domain structures. In addition, motion of the elastic excitation region (kink) along domain structures in the acyl chain region causes the formation of acoustic soliton, i.e., the compression region in the polar group subsystem moving in concert with the kink displacement. The soliton localization region covers about 10 molecules and depends significantly on the interaction parameter of the polar group and acyl chain subsystems. Soliton moves at a subsonic speed determined, in particular, by the magnitude of an external force.

Conclusions. The model developed in this paper shows that liquid crystalline domain structures in lipid membranes exhibit properties of active media, wherein the formation and displacement of localized elastic excitations on macroscopic spatial and temporal scales may occur. The proposed molecular mechanism of the soliton transport along quasi-one-dimensional domain structures may be used for describing the directed energy transfer along lateral domain channels in biomembranes and the cooperative functioning of the membrane bioenergetic and receptor complexes.
Nonreciprocal propagation of spin waves in a bilayer magnonic waveguide based on yttrium-iron garnet films
Authors: Odintsov S. A. , Lock E. H. , Beginin E. N. , Sadovnikov A. V.
Published: August 2022

Objectives. Nonreciprocal spin wave effects can manifest themselves in metalized films of ferrite garnets. By studying the dynamics of spin waves in micro- and nano-scale magnetic films, the possibility of using multilayer dielectric films of yttrium iron garnet (YIG) to ensure the manifestation of the nonreciprocity effect is demonstrated. This approach offers advantages compared to the use of a layered YIG/metal structure due to significantly lower spin-wave losses in the two-layer YIG film consisting of layers with different values of magnetization. Such films can be used in logical elements to create controllable Mach-Zehnder interferometers based on magnonic principles. The purpose of this work is to reconcile the concept of nonreciprocal spin-wave propagation of a signal with the simultaneous manifestation of the effects arising from the propagation of spin waves in microwave guides formed by finite-width YIG films.

Methods. We used an experimental microwave spectroscopy method based on a vector network analyzer along with a finite difference method to perform a numerical simulation of the dispersion characteristics of spin waves in two-layer magnonic microwave guides. An analytical model was also used to obtain a dispersion equation based on the magnetostatic approximation.

Results. Based on measurements of the amplitude and phase responses, the possible coexistence of two frequency ranges for the propagation of a spin-wave signal in a two-layer magnon microwave guide based on a YIG film formed by two layers with different values of saturation magnetization was demonstrated. Regimes of nonreciprocal propagation of a spin-wave signal were revealed. A numerical model was using to study the formation mechanisms of spin wave modes in the spectrum of a two-layer structure formed due to the finite dimensions of the microwave guide. An analytical model was used to evaluate the transformation of the mode spectrum. The experimental data are in good agreement with the results of the proposed numerical and analytical models.

Conclusions. The possibility of frequency-selective propagation of spin waves in a magnon microwaveguide consisting of two layers with different saturation magnetization values is demonstrated. Multimode propagation of spin waves can occur inside a two-layer structure in two frequency ranges. At the same time, this process is accompanied by a strong nonreciprocity of spin-wave signal propagation, which manifests itself in a change in the amplitude and phase responses when the direction of the external magnetic field is reversed. The proposed two-layer spin-wave waveguide concept can be used in the manufacture of magnon interconnects and magnon interferometers with the support of multiband regimes of operation.
Pengembangan Pertanian Tebu Di Kabupaten Sleman Dan Dampaknya Terhadap Kondisi Sosial – Ekonomi Petani: Studi Pada Koperasi Tebu Sido Makmur
Authors: Yusuf Ilma Fatimah
Published: August 2022

Sleman Regency is a productive area, its agriculture is known to support food security. This is proven by the various awards given by the Minister of Agriculture, one of which is a member of the Sido Makmur sugar cane farmer cooperative, which is located in Kalasan District, Sleman Regency. The award that can be obtained is, of course, due to the development of sugarcane farming. So, the purpose of this research is to examine the development of sugarcane farming and its impact on socio-economic conditions, which is focused on the Sido Makmur Cooperative.

The method in this study uses descriptive analysis, with purposive sampling technique. While the data collection techniques were carried out by means of observation, interviews and documentation. The data analysis uses data reduction techniques, categorization, data display and drawing conclusions.

The results of the study show several things. The first, sugarcane farmers who are members of the Sido Makmur Cooperative have a maximum education up to high school level. Second, the land cultivated by sugarcane farmers is varied, at least 1.5 Ha, while at most 10 Ha. There is land that is cultivated on a lease basis, but there is also one that is owned by yourself. Third, cooperatives have a role in the development of sugarcane agriculture through the steps of forming a business unit for the procurement of retail fertilizer sales, rental of agricultural production equipment, savings and loans and building relationships with sugar factories. Fourth, the role of the cooperative can encourage members of sugarcane farmers to remain productive and as an effort to improve the welfare of members.
Analisis Analisis Kelayakan Usaha Sayuran Sawi Hidroponik Di Kecamatan Kambu Kota Kendari
Authors: Rizka Syahria
Published: August 2022

Farming using a hydroponic system really provides a solution to people in urban areas, hydroponics can be cultivated in a not so large area. This is started by the community or respondents in Kambu District by utilizing the land around the house. The mustard plant was chosen by the respondents to be cultivated because of its high demand and affordable selling price. This research was conducted to determine production costs, revenues, income, and the feasibility of a hydroponic mustard vegetable business in Kambu District, Kendari City. This research is a case study research on the hydroponic farming business of mustard greens in Kambu District, Kendari City. The results of this study indicate that the production costs incurred by respondents of hydroponic mustard vegetables in a year with a frequency of 8 harvests are Rp.256.000 mt-1 or Rp.3.072.000/year. The hydroponic mustard vegetable business that is run is feasible with an R-C value of 3.80 ratio with revenue and income in a year of Rp.11,704,000 and Rp. 8,632,000.
Pola Kemitraan Ayam Ras Pedaging Pola Kemitraan Ayam Ras Pedaging dan Pengaruh Karakteristik Peternak, Pendapatan serta Pelayanan Perusahaan terhadap Loyalitas Kerjasama	(Studi di PT. Semesta Mitra Sejahtera, Kabupaten Tulungagung)
Authors: Nurihayanti Onny
Published: August 2022

Poultry business development is a reliable business, providing a significant increase in income, opening up employment opportunities, a source of fulfilling community nutrition and supporting the industrial sector. General Director of PKH (2020) said that East Java's chicken meat production in 2018 was 480,309.46 tons, in 2019 it was 506,731.16 tons and in 2020 it was as high as 474,868.84 tons. Economic conditions will foster competition among business actors, especially for large-scale business actors, the small farmers will suffer even more due to various limitations. The solution that can provide a solution to the problem of developing a poultry business, especially broilers, is through a partnership pattern. This study aims to determine the effect of breeder characteristics (X1), income (X2) and company services (X3) on loyalty cooperation (Y) partnership pattern at PT. Semesta Mitra Sejahtera, Tulungagung. This type of research is a survey research using 60 samples. Collecting data using a questionnaire method with a Likert scale, observation and interviews. Data analysis using SPSS 24 includes classical assumption test and multiple linear regression analysis to test the hypothesis. Resulting of the regression analysis show the function equation Y = 0.159 + 0.143X1 + 0.003X2 + 0.844X3+e has a coefficient of determination (R2) of 0.822, means that cooperation loyalty is influenced by breeder characteristics, income and company services of 82.2%. The result of  hypothesis test are stated: an influence between the characteristics of breeders on cooperation loyalty (H1 is accepted), nothing effect between breeders' income on cooperation loyalty (H2 is rejected) and influence between company services on cooperation loyalty (H3 is accepted).
Analisis Kinerja Keuangan Pemerintah Daerah Sumatera Utara Pada Masa Pandemi Covid-19
Authors: Sitepu Yuni Lestari  Br , Munawarah Munawarah , Simatupang Novita Lamria
Published: August 2022

This study aims to examine the financial performance of the North Sumatra Province government during the Covid-19 pandemic. The data is quantitative descriptive and the data is taken from the LRA 2020 and LRA 2021 North Sumatra Province which have been audited. The results obtained by the Province of North Sumatra remain independent even in the midst of a pandemic. Judging from the effectiveness ratio, the realization of North Sumatra Province Original Regional Revenue (PAD) in 2020 is 101.8% and in 2021 it is 101.95% of the PAD budget set. The operating expenditure compatibility ratio, namely a decrease in the expenditure ratio from 2020 to 2021. The Capital Expenditure Harmony Ratio experienced a decrease in Capital Expenditures in 2021 due to a reduction in capital expenditures consisting of equipment and machinery capital expenditures, building and building capital expenditures, road capital expenditures, Irrigation and Network and Other Fixed Assets Capital Expenditure. The income growth ratio in 2020 is -1.24% which shows that the income in North Sumatra Province is decreasing, and that income is increasing by 8.65% in 2021.
Ways to reduce the determinism of speeds in tillage machine-tractor units
Authors: Kazakov Yu. F. , Medvedev V. I. , Pavlov V. S. , Pyrkin A. V.
Published: August 2022

Relevance. One of the main factors in increasing the productivity of machine-tractor units (MTU) is the speed of translational motion. In most cases, the arable MTU have a rigid connection between the components. With the growth of translational motion, energy costs change with a positive acceleration due to an increase in the strength characteristics of the soil. The purpose of the research is to find ways to reduce the determinism of the speeds of the components of the machine-tractor unit, to develop estimated indicators of the determinism of speeds, kinematic analysis of the combined tillage working organ-mechanism.Methods. The research methodology is based on a systematic analysis of factors that have a causal relationship with the quality and energy performance of machinetractor units. The arable layer is considered as a three-phase medium. The kinematic analysis was carried out by methods of theoretical mechanics. The traction resistance is determined in the conditions of the soil channel.Results. The technological parameters of the operating modes, speed, depth of the tillage working bodies, the direction of movement along the slope can be changed within limited mutually dependent limits corresponding to agrotechnical, environmental, operational requirements and safety requirements of the MTU personnel. Estimated indicators of the determinism of speeds are proposed: kinematic transformation of the cutting angle, the quality of crumbling, the maximum of the driving force with a minimum of power for the work of the working bodies-movers. A combined tillage working organ-mechanism has been developed for undercover loosening as part of a cutting knife and a spring mole, self-adapting to changes in the longitudinal hardness of the soil. The results of kinematic analysis and experimental studies of a mock-up sample of a working organ in the conditions of a soil channel confirmed the self-oscillatory nature of the movement of the spring mole. Automatic maintenance of the necessary degree of determinism of speeds helps to reduce the energy intensity of the crevice process with simultaneous mowing.
Approbation of the developed starter culture based on Lactobacillus salivarius and Lactobacillus curvatus for raw smoked poultry sausages
Authors: Kenyz N. V. , Nesterenko A. A. , Lysenko Yu. A. , Rebezov M. B.
Published: August 2022

Relevance. The increase in the production of poultry has led not only to its selection changes, but also to an active change in the diet and growing regimes. These changes are aimed at obtaining fast-growing birds with maximum weight gain. Additionally, these changes have led to an increase in cases of obtaining meat raw materials with ripening defects, which negatively affect the production of sausages, especially the raw-smoked group.Methods. The research was carried out in the laboratories of the Faculty of Processing Technologies of the Kuban State Agrarian University. Approbation of the technology was carried out in the educational-scientific-industrial complex “Agrobiotechpererabotka”. The object of the study is a starter culture represented by strains of Lactobacillus salivarius and Lactobacillus curvatus. In the course of industrial approbation, the starter culture “Bactoferm F-SC-111” was taken for comparative analysis. Analysis of moisture-binding, water-holding capacity, pH, mass measurements were carried out by the standard method.Results. Studies have been carried out on the change in the pH value of model minced poultry meat separately by strains of Lactobacillus salivarius and Lactobacillus curvatus. An active decrease in minced meat pH from 6 to 5.1 was revealed after 12 hours of exposure at a temperature of 22°C. As a result of the pH shift to the acidic side, there is a decrease in the moisture-binding and water-holding capacity of the model minced meat. During the testing, the pH level, the amount of lactic acid, the mass fraction of moisture in the loaves were monitored throughout the entire technological cycle. Positive dynamics of pH decrease and lactic acid accumulation in sausage sticks was revealed. The drying process of sausages was 15 days for the control batch and 16 daysfor the experimental batch.
Quantitative assessment of the level of biological risk for alimentary-related infections and invasions in the Ryazan region
Authors: Lyashchuk Yu. O. , Teterin V. S. , Ovchinnikov A. Yu. , Panfyorov N. S.
Published: August 2022

Relevance. The article deals with the relevance of a quantitative assessment of the level of biological risk for alimentary-caused factors according to the epidemiological indicators of infectious morbidity in the Ryazan region over a five-year period. Alimentarycaused biological risk factors are pathogens of infectious and parasitic diseases of various etiologies transmitted with food products, which can be the causative agents of especially dangerous infections, acute intestinal infections, food poisoning or be a source of food poisoning.Methods. In the course of the research, we used statistical methods for analyzing and assessing cyclical trends in morbidity, predicting the dynamics of morbidity, comparing the dynamics of morbidity with the dynamics of alimentary-related biological risk factors.Results. To quantify the level of biological risk for alimentary-related factors according to the epidemiological indicators of infectious morbidity in the Ryazan region, threestage epidemiological diagnostics was carried out, including the stage of collecting and analyzing statistical information, a descriptive and analytical stage. The results of our analysis over a five-year period showed that the greatest danger at present in terms of food safety is posed by risk factors of bacterial etiology: Staphylococcus aureus bacteria (УРэпид = 365,572), diarrheagenic serovariants of Escherichia and bacteria of the Escherichia coli group (УРэпид = 367,230), as well as various Salmonella serovariants (УРэпид = 371,161).
Study of the effect of ultrafine particles of copper and iron on mineral metabolism in the body of broiler chickens on a semisynthetic diet
Authors: Kvan O. V. , Sizova E. A. , Vershinina I. A. , Kamirova A. M.
Published: August 2022

Relevance.Today, the livestock industry is facing a serious problem associated with unbalanced nutrition of farm animals, which does not allow to fully realize the full potential of the industry. In this regard, it is necessary to conduct research aimed at finding a solution to this problem and developing ways to provide animals with good nutrition. The aim of this study was to study the effect of ultrafine particles (UFP) of copper and iron on mineral metabolism and microbial diversity of the caecum of broiler chickens on a semi-synthetic diet.Methods.Experimental studies to assess the effect of ultrafine particles of copper and iron on the metabolism of broiler chickens of the Arbor Acres cross, which are on a semi-synthetic diet, were carried out on 120 week-old broiler chickens, which were divided into 4 groups (n = 30) by the method of pairs of analogues. The birds received a semi-synthetic diet (SR) and a semi-synthetic diet deficient in trace elements in our modification (SDR). The I experimental group received UFP Cu at a dosage of 2.5 mg/kg of feed, and the II experimental group received UFP Fe at a dosage of 2.5 mg/kg of feed.Results.Absorption and metabolism of ultrafine parts of copper and iron in the body of a bird depend on the physico-chemical properties, such as size, shape and method of administration, as well as the dose of ultrafine particles of copper and iron. Therefore, the present results are an important indication of the potential for using UHF as an effective source of Cu and Fe for broilers.
Use of a complex probiotic supplement in turkey feeding
Authors: Arakcheeva E. N. , Zabashta N. N. , Marchenko A. Yu. , Lisovitskaya E. P. , Bychenko N. V. , Moskalenko E. A.
Published: August 2022

Relevance. Over the past decades, we have witnessed really big changes in the global livestock and poultry industry. Poultry feeding and breeding systems have reached high peaks of development with a significant improvement in genetic capacity. Currently, ration balancing is possible with the latest systems capable of automating feed production, as well as schemes to increase the efficiency of servings. With this approach, a balance of all nutrients is achieved, which in turn leads to a reduction in production costs. The nutritional value of compound feed is increased by adding additives of various origins. In our study, the improvement of metabolic processes in the body of a bird is achieved by introducing a feed additive based on probiotics into the diet. The article presents the results of studying and comparing indicators of meat productivity of turkeys.Methods. The object of research was the turkey cross Hybrid Converter. An additive, Prolaxim-B, was introduced into the main diet. The subjects of research were the composition and nutritional value of the diet, the dynamics of live weight, the increase in live weight, the morphological composition of the carcass, the chemical composition, morphological blood parameters, and sanitary and hygienic indicators. The biochemical composition of meat samples was studied in the laboratories of the testing center “Argus” of theFBGNU KNTsZV. The mass fraction of moisture was determined by drying the sample according to the standard method. The mass fraction of protein — by the Kjeldahl photometric method, the mass fraction of fat — using the Soxhlet extraction apparatus; mass fraction of ash — by the ashing method; the energy value was found by the Alexandrov method.Results. The experiment showed that the inclusion of a preparation containing the Prolaxim-B probiotic in the diet of a turkey helps increasing the safety of the livestock, live weight, and the intensity of their growth; there is a tendency to reduce the level of conditionally pathogenic microflora and increase that ofbeneficial microflora. It was found that the weight of the edibleoffal was significantly higher in the experimental group. In general, the productivity of the turkey, the competitiveness of the finished product and the profitability of industrial enterprises are growing, thereby attracting new sources of funding to this area of agriculture.
Comparative estimation of productivity, 1000-kernel weight and grain nature weight of the winter common wheat varieties according to the parameters of ecological adaptability and stability
Authors: Chernova V. L. , Skripka O. V. , Podgorny S. V. , Samofalov A. P. , Gromova S. N.
Published: August 2022

Relevance. The development of highly productive and stable varieties of grain crops has always been and will be the main breeding concern. The productivity of each variety greatly depends on its genotype, however, the formation of its level as a whole and its individual elements is influenced by growing conditions, in particular, weather and climatic conditions. The varieties of the same grain crop differ in different ecological and genetic variability of productivity traits, that affects their adaptability and stability.Methodology. The current study was carried out in the laboratory for breeding and seed production of winter common wheat of intensive type of the FSBSI “ARC “Donskoy”” in the competitive variety testing in 2016–2020. The objects of the study were 9 winter common wheat varieties of intensive type. The standard variety was Ermak. The trials were laid down according to the Dospekhov methodology of a field trial.Results. The current paper presents the data of the five-year (2016–2020) study of 9 winter common wheat varieties of intensive type developed by the FSBSI “ARC “Donskoy”” in the competitive variety testing. Studying the parameters of ecological adaptability, stability, homeostaticity, there have been identified the varieties Donskaya Step, Razdolie, Zodiak according to productivity. According to grain nature weight there have been identified such varieties as Donskaya Step, Shef, Yubiley Dona, Rubin Dona, Univer. According to 1000-kernel weight the best varieties were Donskaya Step, Yubiley Dona and Nakhodka.
Covid-19 Pnömoni Sonrası Kısa Dönem Akciğer Bulgularının Bilgisayarlı Tomografi ile Değerlendirilmesi: Retrospektif Çalışma
Authors: ÖZTEPE Muhammet Fırat , GÖKALP Gökhan
Published: August 2022

Bu çalışmada amacımız koronovirüs hastalığı-2019 (COVID-19) pnömoni sonrası kısa dönemde oluşan akciğer bulgularını bilgisayarlı tomografi (BT) ile değerlendirmektir. Mart 2019 – Aralık 2021 tarihleri arasında hastanemize başvuran, COVID-19 enfeksiyonu nedeniyle tedavi edilen ve kontrol görüntülemesi yapılan olgular retrospektif olarak incelendi. Hastaların yaş, cinsiyet, altta yatan komorbidite, pnömoni şiddeti, semptom başlangıç zamanı, hastane yatışı ve yatış süresi bilgileri kaydedildi. Hastaların tanı anında ve ortalama 3 ay sonra çekilen toraks BT görüntüleri değerlendirildi. BT şiddet skorlaması her bir akciğer lobuna 0-5 aralığında puan verilerek 0-25 arasında puanlandı. Tek değişkenli ve çok değişkenli logistic regresiyon analizi ile akciğerde persisten anormallik oluşumu için risk faktörleri araştırıldı. Toplamda 62 hasta (33 erkek, 29 kadın; ortalama yaş 55,2±13,2; yaş aralığı 31-80) çalışmaya dahil edildi. Hastalar total rezolüsyon (27/62; %44) ve rezidü (35/62; %56) grubu olarak ikiye ayrıldı. Rezidü grubunda kontrol BT’de en sık görülen bulgular buzlu cam opasitesi (25/35; %71) ardından parankimal bant (24/35; %69) idi. Retikülasyon (4/35; %11) ve plevral kalınlaşma (14/35; %40) sadece kontrol BT’de görülen bulgulardı. Volüm kaybı hem tanı BT’de (4/35; %11) hem de kontrol BT’de (8/35; %23) görüldü (p=0,344). İleri yaşın (>50 yaş) (OR:23,447 p=0,03) rezidüel akciğer bulgularının oluşmasında bağımsız risk faktörü olduğu saptandı. Post-COVID 3. Ayda kısa dönemde toraks BT’de persistan anormallik oluşma riski ileri yaşta (>50 yaş) yüksektir. Persistan toraks BT bulgularının ne kadarının gerçek fibrozisi yansıttığı uzun dönem takip sonucu ortaya konabilir.
Raza y literatura en Iris: la serie históricomemorialística Alborada y las representaciones raciales en una obra clave del espiritualismo de vanguardia. Chile 1930-1946
Authors: Arre Marfull Montserrat
Published: August 2022

Este artículo expone elementos de la obra literaria Alborada, serie de tres novelas histórico- memorialísticas chilenas escritas por Iris (Inés Echeverría Bello). Se analizará el discurso racialista, detectado en la lectura de esta y otras obras de la autora. Las referencias al campo semántico de la raza no son extrañas en la época, sin embargo, es preciso hacer una contextualización de la producción de Iris para comprender los significados del concepto de raza en esta obra. Se analizarán las novelas en el contexto histórico e intelectual donde se movía la autora. La raza, en conclusión, fue un concepto que permitió generar un discurso evolutivo, que encauzaba el mensaje mesiánico de Alborada, en concordancia con las tendencias teosofistas a las cuales adscribía la autora.
Juan Valdano: hablará por sí mismo siempre
Authors: Ponce Maldonado Modesto
Published: August 2022

Este texto recuerda y enaltece al hombre, y a la vez al polifacético escritor y profesor universitario Juan Valdano, quien cultivó el ensayo, la investigación, la novela y el cuento. Evoca al ecuatoriano que celebró al país al dedicar más de una obra a nuestra forma de ser, a nuestra idiosincrasia y a nuestro sentido de nación. Estudió Filosofía y Letras en Cuenca, Filología Hispánica en Madrid y Letras Francesas en Provence. Miembro de la Academia Ecuatoriana de la Lengua, recibió varios premios y distinciones como el Premio Eugenio Espejo por su trayectoria y sus obras. Como homenaje a su memoria, se añade un comentario crítico a una antología personal de sus cuentos titulada Juegos de Proteo (2012).
Analysis of Knowledge Management in Information Systems Faculty of Da'wah and Communication Studies UIN Syarif Hidayatullah Jakarta based on Usability Evaluation
Authors: Hardi Tomi
Published: August 2022

Information systems are media used to channel information. each campus has a medium for channeling information. One of them is the UIN Syarif Hidayatullah Jakarta campus. One of the information systems owned by Uin Syarif Hidayatullah Jakrta is the information system at the Faculty of Da'wah and Communication Studies. In this system there are several parts, namely the homepage, accreditation, academic, student affairs, library and others. The purpose of this study is to evaluate Usability to improve user satisfaction in using this information system. The research method used is literature study, field studies and SUMI (Software Usability Measurement Inventory) questionnaire. The questionnaire was conducted on 20 respondents namely 10 lecturers and 10 students of the da'wah and communication faculty. The questionnaire was carried out in 3 categories, namely effectiveness, efficiency and satisfaction with the linker agreed, disagreed and did not know. The results of the SUMI questionnaire calculation of the information system are 80, 75,75,70,70,87.5. The usability evaluation results are above average, meaning that usability in the Da'wah and Communication faculty information system has been going well.
Implementation of Moving Object Tracker System
Authors: Mohanad Abdulhamid  , Adam Olalo
Published: August 2022

The field of computer vision is increasingly becoming an active area of research with tremendous efforts being put towards giving computers the capability of sight. As human beings we are able to see, distinguish between different objects based on their unique features and even trace their movements if they are within our view. For computers to really see they also need to have the capability of identifying different objects and equally track them. This paper focuses on that aspect of identifying objects which the user chooses; the object chosen is differentiated from other objects by comparison of pixel characteristics. The chosen object is then to be tracked with a bounding box for ease of identification of the object's location. A real time video feed captured by a web camera is to be utilized and it’s from this environment visible within the camera view that an object is to be selected and tracked. The scope of this paper mainly focuses on the development of a software application that will achieve real time object tracking. The software module will allow the user to identify the object of interest someone wishes to track, while the algorithm employed will enable noise and size filtering for ease of tracking of the object.