bluuebunny/crossref_metadata_2025_split huggingface dataset:
INFLUENCE OF HEAT GENERATION ON DETONATION IN REAL GAS
Authors: Avramenko A.A. , Kovetskaya M.M. , Kondratieva E.A. , Skitsko O.I. 
Published: February 2025

The study of detonation processes in gaseous media is of interest for the coal mining, aviation, aerospace industries, and hydrogen energy. Under high pressure conditions during the passage of a detonation wave, it is necessary to take into account the equation of state of a real gas, the effects of endothermicity and exothermicity.
The paper considers the flow of real gas through a plane detonation wave. A modified Rankine-Hugoniot equation has been obtained to describe the dynamics of changes in the parameters of a van der Waals gas flow when it passes through a detonation wave.
An equation for the maximum increase in gas density during the passage of a detonation wave is obtained. The influence of parameters A and B in the van der Waals gas equation of state on the asymptote of the maximum increase in density is shown. It follows from the equation that the asymptote of the maximum increase in density shifts to the region of lower values ​​of r2/r1 with an increase in the value of parameter B, and parameter A does not affect the position of the asymptote of the maximum increase in density.
The influence of heat release and thermodynamic properties of gas on the pressure jump in the detonation wave is shown. Pressure jumps in a van der Waals gas are greater than in the case of an ideal gas. Calculations have shown that an increase in parameter A slows down the increase in pressure in the detonation wave, and an increase in parameter B enhances it. An increase in heat release leads to an increase in the pressure jump, to an equidistant increase in the Hugoniot curve compared to the case without heat release.
ENERGY EFFICIENT TECHNOLOGY OF RECTIFIED ETHYL ALCOHOL
Authors: Bulii Y.V. , Obodovych O.M. , Stepanova O.E. 
Published: February 2025

In the conditions of rising energy prices, the urgent task for the alcohol industry is the development and implementation of energy-efficient technologies of rectified ethyl alcohol, which allow reducing water and steam consumption and increasing the output of the finished product from a unit of raw materials. To solve it, modernized distillation units (BRU) are being implemented, which work under rarefaction or provide for the heating of some columns by the secondary steam of high potential of other columns operating under pressure, equipping the units with booster and sieving columns, increasing the number of contact devices, using the heat of bard and Luther water , closed column heating, introducing cyclical installations, etc. A promising direction in the creation of energy-efficient technologies is the optimization of the operation of the heat exchange equipment included in the BRU, as well as the use of the heat of secondary steam.
One of the factors for optimizing heat exchange equipment is the correspondence of the heat transfer surface of dephlegmators and condensers to their heat load, as well as the methods of their connection to water communication. Also, to optimize the operation of heat exchange equipment, the connection schemes of dephlegmators and vertical condensers of BRU are of great importance.
The efficiency of the innovative technology of rectified alcohol has been determined under production conditions, which provides for the supply of alcohol-containing fractions in the form of non-condensed in the deflegmators of the main columns of vapour to the feed plate of the impurity concentration column. This solution allows to reduce the total water consumption by 0,032 m3/dal (5,1 %) and the heating vapour by 1,2 kg/dal (1,9 %) in terms of anhydrous alcohol in comparison with the known method. The expected profit for the plant with a capacity of 3000 dal of alcohol per day will be about UAH 1,5 million per year. Increasing the amount of non-condensed vapour from 2 to 5 % to feed the column will reduce the heating vapour consumption from 10 to 8,8 kg/dal, and increase the profit by 33,3 %. During the tests the qualitative indicators of rectified alcohol corresponded to the normative ones for "Lux" grade.
THE STUDY OF THE INFLUENCE OF HYDRODYNAMIC CAVITATION EFFECTS ON THE PROPERTIES OF COMPLEX MULTICOMPONENT SYSTEMS
Authors: Avdieieva L.Yu. , Pavlyk V.Yu. 
Published: February 2025

Emulsions have high efficiency and biological activity, easy absorption, and high digestibility, because they include extracts and parts of medicinal plants, essential oils, vitamin and mineral complexes. They are widely used in medicine, pharmaceutical, chemical and food industries, as well as agriculture. At the same time, the treatment of liquid multicomponent heterogeneous systems to obtain stable micro- and nano emulsions is a long and energy-intensive process.
Modification or replacement of obsolete energy-intensive technological processes and equipment to increase their efficiency is one of the main problems of modern production.
Various cavitation devices have proven to be highly efficient and productive with low energy consumption when producing high-quality liquid emulsion systems.
Streaming hydrodynamic cavitation devices of the static type based on the Venturi tube are reliable high-performance equipment and are widely used for the formation of microemulsions by hydrodynamic cavitation. Although the influence of Venturi tube geometry on the occurrence of hydrodynamic cavitation has been widely studied, there is no clear relationship between cavitation and Venturi tube geometry parameters.
The aim of this work was to study the influence of the geometry features of the Venturi nozzle design in cavitation mixers on the flow characteristics in the formation of emulsion systems as the basis of light emulsion creams.
The presented results of experimental studies describe the influence of the geometry features of the Venturi nozzle design on the flow characteristics during the formation of emulsion systems in static cavitation mixers. Flow rate, flow velocity, Reynolds number and cavitation number are defined among the characteristics of hydrodynamics of the flow. The quality of the obtained emulsions is evaluated by dispersion and stability of the emulsion over time.
IMPROVEMENT OF THE CONDITIONS OF DISPERSAL OF HARMFUL EMISSIONS FROM GLASS FURNACES IN CASE USING HEAT-RECOVERY TECHNOLOGIES
Authors: Fialko N.M. , Navrodska R. , Shevchuk S. , Gnedash G. 
Published: February 2025

The purpose of this study is to improve the operating modes of chimneys of gas-burning glass melting furnaces by applying the methods of their ecologization in systems for using the waste heat of furnace gases.
Known methods of thermal calculation of heat-exchangers and chimneys and methods for dispersing harmful emissions from thermal power plants in the environment were used. For the first time, the effectiveness of the proposed methods of greening to improve the conditions for dispersing harmful emissions from gas-burning glass melting furnaces in the environment under the conditions of using heat-recovery technologies has been studied. The results obtained will be used in the development of energy-efficient gas-burning thermal installations for technological purposes.
Computational studies have been carried out to improve the safety of operation of chimneys of regenerative-type glass melting furnaces by using technologies for recovering the waste heat of furnace gases using water and air-heating heat-exchangers and chimneys of various designs.
The influence of structural features of chimneys on their operating modes by using heat-recovery technologies with water and air-heating heat-exchangers is studied.
It is proposed to increase the environmental efficiency and operational reliability of chimneys by using the thermal method of bypassing a part of waste gases exhausted from regenerators past the heat-recovery equipment in heat-recovery technologies. An analysis of the effectiveness of this method to improve the ground-level concentrations of harmful emissions from furnaces by using the proposed heat-recovery systems was carried out. This method is more efficient for heat-recovery systems with water heat-recovery exchangers, is shown. Thus, with an increase in the share of waste-gas bypass from 0 to 40 %, the values of the coefficient showing the relative change in the maximum surface concentrations of harmful emissions increase to 6.5 % for heat-recovery systems with air-heating heat-exchangers and up to 30% by using water-heating heat-exchangers.
FEATURES OF THE PRETREATMENT OF WHEAT STRAW FOR HYDROLYSIS
Authors: Bulii Yu.V. , Sydorenko V. V. 
Published: February 2025

One of the stages of the complex processing of plant raw materials is the separation of lignin and hemicellulose from the lignocellulosic complex, followed by obtaining valuable chemical products or fuel from it.
This stage is an integral part of the pretreatment of raw materials for hydrolysis. But this stage is the most energy-consuming of the fuel ethanol obtaining, and aims to destroy the stable structure of cellulosic biomass and make cellulose more accessible to enzymes that convert carbohydrate polymers into fermentable sugars.
High energy costs of pretreatment of raw materials for hydrolysis are because this process takes place at high temperatures and pressure.
The work aimed to compare the effect of temperature, alkali concentration, and treatment duration of alkaline solutions of wheat straw by two methods of alkaline pretreatment on the process of lignin removal during preparing of raw materials for hydrolysis.
It was determined that increasing the alkali concentration from 0.5 to 4% reduces the lignin content in the sample to 4.17% of the total amount of solids for autoclaving at 90 ºС, at 121 ºС the amount of lignin content decreases to 2.98%. Processing at a temperature of 90 ºС reduces the lignin content to 3.15%.
The processing duration of affected the process of pretreatment as follows. The minimum lignin content in the sample for autoclaving at 90 ºС for 60 min of treatment was 4.12% of the initial one. The minimum lignin content in the sample at 121 ºС was observed for one hour and made up 3.15%. Processing in a rotor-pulsation apparatus leads to a lignin content in the sample of up to 2.98% in 120 minutes.
The lignin is the most effectively removed in the temperature range of 80-121ºС. The minimum lignin content in the sample for autoclaving was 2.98% at 121 ºС. For processing, the maximum value of removed lignin was 3.15% at 90 ºС.
Regression modeling with convolutional neural network for predicting extent of resection from preoperative MRI in giant pituitary adenomas: a pilot study
Authors: Patel Biren Khimji , Tariciotti Leonardo , DiRocco Lorenzo , Mandile Antonio , Lohana Samir , Rodas Alejandra , Zohdy Youssef M. , Maldonado Justin , Vergara Silvia M. , De Andrade Erion Jr. , Revuelta Barbero Juan M. , Reyes Camilo , Solares C. Arturo , Garzon-Muvdi Tomas , Pradilla Gustavo 
Published: February 2025

OBJECTIVE
Giant pituitary adenomas (GPAs) are challenging skull base tumors due to their size and proximity to critical neurovascular structures. Achieving gross-total resection (GTR) can be difficult, and residual tumor burden is commonly reported. This study evaluated the ability of convolutional neural networks (CNNs) to predict the extent of resection (EOR) from preoperative MRI with the goals of enhancing surgical planning, improving preoperative patient counseling, and enhancing multidisciplinary postoperative coordination of care.

METHODS
A retrospective study of 100 consecutive patients with GPAs was conducted. Patients underwent surgery via the endoscopic endonasal transsphenoidal approach. CNN models were trained on DICOM images from preoperative MR images to predict EOR, using a split of 80 patients for training and 20 for validation. The models included different architectural modules to refine image selection and predict EOR based on tumor-contained images in various anatomical planes. The model design, training, and validation were conducted in a local environment in Python using the TensorFlow machine learning system.

RESULTS
The median preoperative tumor volume was 19.4 cm3. The median EOR was 94.5%, with GTR achieved in 49% of cases. The CNN model showed high predictive accuracy, especially when analyzing images from the coronal plane, with a root mean square error of 2.9916 and a mean absolute error of 2.6225. The coefficient of determination (R2) was 0.9823, indicating excellent model performance.

CONCLUSIONS
CNN-based models may effectively predict the EOR for GPAs from preoperative MRI scans, offering a promising tool for presurgical assessment and patient counseling. Confirmatory studies with large patient samples are needed to definitively validate these findings.
Predecompression and postdecompression cognitive and affective changes in Chiari malformation type I
Authors: Henry Luke C. , McDowell Michael M. , Stephenson Tina L. , Crittenden J. Bret , Byrd Amy L. , Fernández-de Thomas Ricardo J. , Chang Yue-Fang , Nowicki Kamil W. , Mantena Rohit , Strick Peter L. , Friedlander Robert M. 
Published: February 2025

OBJECTIVE
The role of the cerebellum in cognitive function and psychiatric symptoms is poorly understood and particularly understudied in patients with cerebellar pathologies such as Chiari malformation type I (CM-I). Additionally, it is unclear if interventions targeted toward the cerebellum might impact these life-altering symptoms. The authors sought to characterize pre- and postoperative cognitive and psychiatric function in CM-I patients as evidence for targeted cerebellar treatment for some cognitive and psychiatric conditions.

METHODS
This prospective study included surgical patients with CM-I who reported cognitive or psychiatric dysfunction. Patients completed a preoperative assessment and a parallel assessment 6 months following surgery. Neuropsychological evaluations included a 90-minute standardized assessment of cognitive function across multiple domains and a self-reported assessment of psychiatric symptoms. This clinical sample consisted of 54 patients (mean age 34.17 years, median 14.15 years). Any patient demonstrating preoperative performance below 3.5 SDs within any cognitive domain was excluded (n = 1). All patients underwent preoperative neuropsychological assessment comprising standard clinical tests of processing speed, attention, memory, executive function, and psychiatric symptoms.

RESULTS
Preoperatively, CM-I patients performed significantly worse than a representative normative sample on measures of executive function and visuospatial memory and reported more psychiatric symptoms across all domains. On postoperative assessment, 89% of patients showed clinically significant improvements (> 1 SD) in cognitive and/or psychiatric domains.

CONCLUSIONS
The authors demonstrate significant, often unrecognized, impairments in cognitive function and psychiatric symptoms in a cohort of CM-I patients. Following targeted surgical posterior fossa decompression, these symptoms improved, suggesting that at least in a subgroup of symptomatic CM-I patients, these symptoms may be treatable. This study highlights the potential role of the cerebellum in cognitive and psychiatric dysfunction.
Near and frank dehiscence of the superior semicircular canal: a comparative analysis of clinical outcome
Authors: Yang Hong-Ho , Mballo Cheikh , Yang Isaac , Gopen Quinton S. 
Published: February 2025

OBJECTIVE
Superior canal dehiscence is a pathological aperture of the otic capsule overlying the superior semicircular canal. Currently, two disease subtypes are recognized by experts: frank dehiscence (FD) and near dehiscence (ND). This investigation compares the clinical manifestation and surgical outcomes between patients with FDs and those with NDs, in hopes of delineating their distinctions in pathophysiology and optimal management strategies.

METHODS
The authors conducted a cohort study of consecutive middle cranial fossa repairs performed at their institution between 2011 and 2022. FDs were defined as clear dehiscence of the otic capsule, and NDs were defined as focal dehiscence or very thin bony labyrinth (< 0.1 mm) on CT imaging. Multivariable regression models were constructed to assess the relationship of dehiscence subtype with audiometric and symptomatologic baseline presentation and postrepair outcomes. Models were adjusted for demographics, history factors, and follow-up duration.

RESULTS
Among 421 repairs included, 100 (24%) were for NDs and 321 (76%) were for FDs. At 250 Hz, FDs and NDs had a comparable baseline air-bone gap (ABG) (adjusted mean 23.8 dB vs 11.1 dB; adjusted β [aβ] 12.8, 95% CI −0.4 to 25.9) and exhibited a similar degree of narrowing postrepair (−11.7 vs −5.5; aβ −6.2, 95% CI −16.8 to 4.5). At 500 Hz, FDs had a wider baseline ABG (15.4 vs 6.4; aβ 9.1, 95% CI 4.3–13.8) but exhibited numerically greater narrowing postrepair (−6.1 vs 1.1; aβ −7.2, 95% CI −11.4 to −3.0). Despite similar baseline symptomatology, patients with FDs reported lower resolution rates of hearing loss (adjusted OR [aOR] 0.43, 95% CI 0.20–0.94) and higher postoperative onset rates of dizziness (aOR 5.12, 95% CI 1.06–24.76) and vertigo (aOR 8.56, 95% CI 1.11–66.16). Resolution rates for autophony and hyperacusis were similarly high (> 60%) among both cohorts.

CONCLUSIONS
Compared to patients with NDs, those with FDs presented with a wider low-frequency ABG but similar symptom profile at baseline. Postsurgery, patients with FDs demonstrated numerically greater ABG narrowing but reported higher rates of dizziness, vertigo, and persistent hearing loss. Nevertheless, surgery yielded objective and subjective benefits among both patients with FDs and those with NDs.
Effectiveness of ICIC Listening Teaching Model under the Theory of Intertextuality
Authors: Zeng Lizi 
Published: February 2025

English listening comprehension has been a difficulty in the process of language learning for foreign language learners, particularly for those who have few opportunities to expose themselves to the English environment. How to cultivate students’ competence in listening is an urgent task to meet the challenge of global and interdisciplinary education. The study conducted an experimental research based on intertextuality theory for the classroom students who were enrolled in college English course. The results showed that the proper English course curriculum design is very important to teachers and students. The proficiency degree varied from one step to the sequential one, but the two are always embedded with each other. Immersion efforts embraced all kind of activities which could stimulate students’ enthusiasm for English listening. An obvious finding from the research was the students’ potential cognition, which penetrated the whole course of language learning and transformation to act as an ICIC strategy model. The findings almost manifested the hypotheses and answered the questions and verified the effectiveness of ICIC model in enhancing students’ listening proficiency.
Investigating the Effect of a Flipped Grammar Classroom Model On Moroccan EFL Secondary School Students: Students’ Grammar Performance, Perceptions and Student-Related Challenges 2024
Authors: Eladraoui Mourad , SAKALE Sana  
Published: February 2025

This study investigates the effect of a flipped classroom model on EFL secondary school students’ performance in grammar. The study also sought to measure students’ perceptions of this flipped classroom and student-related challenges faced in this new learning environment. For the purpose of the study, a pretest-posttest quasi-experimental design was carried out. The experiment lasted for three weeks in which two intact classes (grade 12) from Al Mansour Dahbi upper secondary school in Sidi Kacem were selected for the study. The first class was assigned to the experimental group (n=34) while the second class was assigned to the control group (n=34). The experimental group students were taught through the flipped classroom model and the control group students were taught using the traditional classroom model. A pre-post grammar test was administered to measure students’ performance in the four grammar topics which were selected from the student textbook “Gateway 2 To English”. After the experiment, a 5-point Likert scale questionnaire was used to investigate the experimental group students’ perceptions of the flipped classroom videos and, the in-class activities, and student-related challenges. The findings of the pre-post grammar test indicated that experimental group students significantly outperformed the control group students. Regarding experimental group students’ perceptions and the challenges they faced in the flipped classroom, it was found that most students developed a strong positive attitude towards the flipped approach.
Language Features of Women in Zoe Sugg’s Vlog a Very Homey Weekend
Authors: Pramita Tasya Ni Ketut Ayu , Maharani Sang Ayu Isnu , Pratiwi Putu Ayu Asty Senja 
Published: February 2025

Women’s language in the field of sociolinguistics indicated the women’s behaviour characteristics. The women’s language is women are expected to speak in universal characteristics suggested by Lakoff (1975). The aims of this research are to analyse and describe the features of women’s language in a vlog by Zoe Sugg. The method of this research is qualitative research with a descriptive method with the data in the form of spoken utterances of YouTube vlogs, published on April 22, 2022, which consists of several vlog’s activities for instance: daily routine, fashion, and special events. The findings of this research revealed that from ten features of women’s language all features are in the vlog and also, all of the functions can be found in the vlog. The result of this study research can be applied for reference to teaching material, particularly in sociolinguistics.
Keywords: Women’s Language Features, Women’s Language Functions, Vlog
KOMPETENSI KOMUNIKASI PEMASARAN MAMA-MAMA PAPUA PENJUAL NOKEN DALAM MENINGKATKAN TECHNOPRENEURSHIP DI KOTA JAYAPURA
Authors: Laili Izzatul 
Published: February 2025

Tujuan penelitian menganalisis kompetensi komunikasi pemasaran Mama-mama Papua penjual noken dalam meningkatkan technopreneurship di kota Jayapura. Metode penelitian fenomenologi, unit analisis Mama-mama Papua penjual noken dengan kriterianya penjual noken, status sosial ekonomi dan bukan anggota komunitas UMKM. Pengumpulan data melalui wawancara mendalam, observasi dan studi dokumen. Hasil penelitian menunjukkan pemahaman mama-mama Papua tentang technopreneursip masih sangat rendah sehingga pemanfaatan teknologi digital dalam berwirausaha juga rendah. Mereka belum mampu menjual noken secara online atau melalui platform-platform media sosial seperti facebook, instagram, dan whatsapp. Selain itu aktivitas menjual noken secara konvensional dilakukan di depan mall, trotoar, pasar tradisional maupun di pinggir jalan karena dianggap lebih mudah dan tidak menyulitkan. Kompetensi komunikasi pemasaran mama-mama Papua penjual noken masih rendah, pasif tanpa ada upaya untuk menawarkan nokennya kepada calon pembeli. Komunikasi terjadi dengan calon pembeli kurang persuasif dan terbatas karena tidak ada tawar menawar harga dengan pembeli. Dengan demikian hambatan mama-mama Papua dalam mengembangkan kompetensi komunikasi pemasaran di bidang technopreneurship adalah terbatas pada kepemilikan perangkat digital seperti Hand Phone, rendahnya tingkat Pendidikan, kurangnya motivasi dan dan tidak adaptif terhadap teknologi digital.

Kata kunci : Kompetensi Komunikasi Pemasaran, Technopreneurship, Noken,
Jayapura