bluuebunny/crossref_metadata_2025 huggingface dataset:
Slow magnetic relaxation and luminescence properties in β-diketonate lanthanide(iii) complexes. Preparation of Eu(iii) and Yb(iii) OLED devices
Authors: Tubau Ànnia , Rodríguez Laura , Pander Piotr , Weatherill Lucy , Dias Fernando B. , Font-Bardía Mercè , Vicente Ramon
Published: May 2024

Six β-diketonate compounds [Ln(btfa)3(4,4′-dinonylbipy)] Ln = Sm, Eu, Tb, Dy, Er and Yb are reported. Magnetic and Luminescence study is also filed. The Eu and Yb complexes were successfully used as emitters in multilayer vacuum-deposited OLEDs.
Dual-stimuli responsive chromatic cholesteric fibres with programmable structural-colour
Authors: Zheng Jiajing , Liu Xuan , Yuan Conglong , Zheng Zhigang
Published: May 2024

An active dual-stimulus responsive coloured cholesteric fibre that enables orthogonal modulation of reflection bands and reflectance by optical and gaseous means, respectively.
Modulation of Auger recombination via facet engineering in CsPbBr3 perovskite nanocrystals
Authors: Zhang Jiachen , Feng Shuyue , Zhang Qun
Published: May 2024

We demonstrate the modulation of Auger recombination via facet engineering in CsPbBr3 perovskite nanocrystals, where the static dielectric screening effect is revealed to prevail over the dynamic polaronic screening effect.
Quantum layer spin Hall effect in sliding antiferromagnetic bilayers
Authors: Tian Yuping , Wang Chao-Bo , Zhang Bin-Yuan , Kong Xiangru , Gong Wei-Jiang
Published: May 2024

Sliding antiferromagnetic bilayers have attracted considerable attention due to their multiferroic properties coupled with layers.
Photoinduced dynamic defect tolerance in hybrid organic–inorganic perovskites: phenomena and mechanism
Authors: Liu Guangsheng , Wei Qianwen , Zhang Guijun , Ghasemi Mehri , Li Qi , Lu Junlin , Wang Juan , Jia Baohua , Yang Yu , Wen Xiaoming
Published: May 2024

Defect tolerance, which plays a crucial role in the outstanding photoelectric performance of hybrid organic–inorganic perovskites (HOIPs), is dynamically responsive to illumination. Continuous illumination can induce local structural reorganization leading to dynamic PL enhancement.
Significant differences in photophysical and photovoltaic properties of flexible chain terminated homoleptic tris-Ir(iii) complexes
Authors: You Duoquan , Yang Tianjian , Zhou Aihua , Li Siyuan , Lv Kaiqi , Ma Huili , Zhong Hongliang , Tao Youtian
Published: May 2024

Terminal flexible chains in homoleptic tris-Ir(iii) complexes from ethylhexyl carboxylic ester to hexyl induced dramatic differences in absorption and emission, and in particular had an opposite effect in ternary organic solar cells.
A design strategy for high-performance vertical organic field-effect transistors based on reduced graphene oxide electrodes
Authors: Qiao Kun , Dai Tingfeng , Zou Tao
Published: May 2024

Through analysis and rational design of the device, a high-performance rGO-VOFETs was achieved with a maximum current density of 134.5 mA cm−2.
Family Resilience in Primary Caregivers of Children Who Are Deaf and Hard of Hearing
Authors: Kara Halide Cetin , Cogen Talha , Telci Fatma
Published: May 2024

Purpose:

This study aimed to investigate family resilience—defined as the capacity of a family to harness its collective strengths and resources to recover from and adapt to significant adversities or crises effectively—in primary caregivers of children who are deaf and hard of hearing (cDHH) and its association with quality of life, life satisfaction, perceived social support, and loneliness.

Method:

The study involved 108 primary caregivers of cDHH and 139 primary caregivers of children with normal hearing. Participants underwent psychometric evaluations including the Family Resilience Scale, World Health Organization Quality of Life Assessment–Brief Form, Satisfaction with Life Scale, UCLA Loneliness Scale, and Multidimensional Scale of Perceived Social Support.

Results:

Significant differences were found in almost every scale and its subdimension between the two groups (
p
< .05). Correlation analysis revealed significant correlations between all scale total scores for both groups (
p
< .05, .153 < |
r
| < .737). Quality of life was found to be a significant predictor of family resilience,
F
(1, 139) = 41.824,
R
2
=
.279,
B
= 0.495,
t
= 6.467,
p
< .001.

Conclusions:

Our study highlights the significant impact of having cDHH on caregivers' family resilience, quality of life, life satisfaction, feelings of loneliness, and perceived social support. The results underscore the importance of enhancing caregivers' quality of life as a potential strategy to improve their family resilience. Further research is needed to understand the complex interplay of factors influencing these outcomes.
Group Size: An Active Ingredient of School-Based Language Therapy
Authors: Hutchins Carrie , Schmitt Mary Beth
Published: May 2024

Purpose:

This study explored the relation between therapy group size and language outcomes for children receiving school-based language therapy through an implementation science lens.

Method:

Data for the current study were gathered as part of the Speech-Language Therapy Experiences in Public Schools study. Participants included 273 English-speaking kindergarten through second-grade children with language impairment receiving business-as-usual therapy on the caseloads of 75 speech-language pathologists. Data were collected over an academic year, including weekly therapy logs, speech-language pathology questionnaires, and pre– and post–language measures.

Results:

Descriptive analysis revealed that children primarily experienced small-group therapy sessions (two to four children); however, there was considerable variability in group size. Hierarchical general linear modeling indicated that caseload size did not explain group size variability. However, the number of student cancellations was positively associated with receipt of large-group sessions. Notably, a significant negative association was found between receipt of large-group sessions (i.e., five to 10 children) and language outcomes. Children who received more than the average number of sessions in large groups (i.e., more than 5% of total sessions) experienced 0.18
SD
less language gain over the academic year compared to the mean (0.54
SD
). No other group size configurations (i.e., individual, small group, and extra large) yielded significant associations with language outcomes.

Conclusions:

The findings suggest that young children receiving language-based therapy in large groups make substantially fewer language gains over an academic year. These results have considerable implications for educational policy and clinical practice, which are discussed through an implementation science frame.
Chitosan–Aloe Vera Composition Loaded with Zinc Oxide Nanoparticles for Wound Healing: In Vitro and In Vivo Evaluations
Authors: Adel Alawadi Hasanain , Andarzbakhsh Kamyab , Rastegari Ali , Mohammadi Zohreh , Aghsami Mehdi , Saadatpour Fatemeh
Published: May 2024

Global concerns due to the negative impacts of untreatable wounds, as well as the growing population of these patients, emphasize the critical need for advancements in the wound healing materials and techniques. Nanotechnology offers encouraging avenues for improving wound healing process. In this context, nanoparticles (NPs) and certain natural materials, including chitosan (CS) and aloe vera (AV), have demonstrated the potential to promote healing effects. The objective of this investigation is to assess the effect of novel fabricated nanocomposite gel containing CS, AV, and zinc oxide NPs (ZnO NPs) on the wound healing process. The ZnO NPs were synthesized and characterized by X‐ray diffraction and electron microscopy. Then, CS/AV gel with different ratios was prepared and loaded with ZnO NPs. The obtained formulations were characterized in vitro based on an antimicrobial study, and the best formulations were used for the animal study to assess their wound healing effects in 21 days. The ZnO NPs were produced with an average 33 nm particle size and exhibited rod shape morphology. Prepared gels were homogenous with good spreadability, and CS/AV/ZnO NPs formulations showed higher antimicrobial effects against Staphylococcus aureus, Escherichia coli, and Pseudomonas aeruginosa. The wound healing findings showed significant wound area reduction in the CS/AV/ZnO NPs group compared to negative control at day 21. Histopathological assessment revealed the advantageous impact of this formulation across various stages of the wound healing process, including collagen deposition (CS/AV/ZnO NPs (2 : 1), 76.6 ± 3.3 compared to negative control, 46.2 ± 3.7) and epitheliogenesis (CS/AV/ZnO NPs (2 : 1), 3 ± 0.9 compared to negative control, 0.8 ± 0.8). CS/AV gel‐loaded ZnO NPs showed significant effectiveness in wound healing and would be suggested as a promising formulation in the wound healing process. Further assessments are warranted to ensure the robustness of our findings.
A self‐adaptive communication‐free control scheme of islanded PV‐storage microgrids
Authors: Li Lang , An Xinyu , Zhou Ke , Wang Mei , Cai Yibo
Published: May 2024

For the problem that traditional droop control cannot maintain the maximum output power of photovoltaic (PV) units, this work proposes a self‐adaptive communication‐free control scheme for the islanded PV‐storage AC microgrids. The proposed control enables the maximum power point tracking‐based output active powers of PVs by adaptively adjusting P‐f/Q‐V droop coefficients. It also facilitates adaptive allocations of reactive powers based on the available capacities of PVs and storage modules. The key characteristics of the proposed control strategy are summarized as follows: 1) PV units are controlled as voltage sources, which could participate in the voltage/frequency regulation to a certain extent; 2) maximum power utilization of PVs is obtained; 3) adaptive allocations of reactive powers are realized based on the maximum available capacity of PVs and storage modules. Subsequently, the stability analysis of the proposed self‐adaptive communication‐free control strategy is verified. Finally, the validity of the proposed self‐adaptive communication‐free control method is validated through simulations conducted using MATLAB/Simulink.
The β Pictoris b Hill sphere transit campaign
Authors: Zieba Sebastian , Zwintz Konstanze , Kenworthy Matthew , Hey Daniel , Murphy Simon J. , Kuschnig Rainer , Abe Lyu , Agabi Abdelkrim , Mekarnia Djamel , Guillot Tristan , Schmider François-Xavier , Stee Philippe , De Pra Yuri , Buttu Marco , Crouzet Nicolas , Mellon Samuel , Bailey Jeb , Stuik Remko , Dorval Patrick , Talens Geert Jan , Crawford Steven , Mamajek Eric , Laginja Iva , Ireland Michael , Lomberg Blaine , Kuhn Rudi , Snellen Ignas , Kalas Paul , Wang Jason J. , Stevenson Kevin B. , de Mooij Ernst , Lagrange Anne-Marie , Lacour Sylvestre , Nowak Mathias , Strøm Paul A. , Hui Zhang , Wang Lifan
Published: May 2024

The β Pictoris system is the closest known stellar system with directly detected gas giant planets, an edge-on circumstellar disc, and evidence of falling sublimating bodies and transiting exocomets. The inner planet, β Pictoris c, has also been indirectly detected with radial velocity (RV) measurements. The star is a known δ Scuti pulsator, and the long-term stability of these pulsations opens up the possibility of indirectly detecting the gas giant planets through time delays of the pulsations due to a varying light travel time. We search for phase shifts in the δ Scuti pulsations consistent with the known planets β Pictoris b and c and carry out an analysis of the stellar pulsations of β Pictoris over a multi-year timescale. We used photometric data collected by the BRITE-Constellation, bRing, ASTEP, and TESS to derive a list of the strongest and most significant δ Scuti pulsations. We carried out an analysis with the open-source python package maelstrom to study the stability of the pulsation modes of β Pictoris in order to determine the long-term trends in the observed pulsations. We did not detect the expected signal for β Pictoris b or β Pictoris c. The expected time delay is 6 s for β Pictoris c and 24 s for β Pictoris b. With simulations, we determined that the photometric noise in all the combined data sets cannot reach the sensitivity needed to detect the expected timing drifts. An analysis of the pulsational modes of β Pictoris using maelstrom showed that the modes themselves drift on the timescale of a year, fundamentally limiting our ability to detect exoplanets around β Pictoris via pulsation timing.
The SRG/eROSITA All-Sky Survey
Authors: Bulbul E. , Liu A. , Kluge M. , Zhang X. , Sanders J. S. , Bahar Y. E. , Ghirardini V. , Artis E. , Seppi R. , Garrel C. , Ramos-Ceja M. E. , Comparat J. , Balzer F. , Böckmann K. , Brüggen M. , Clerc N. , Dennerl K. , Dolag K. , Freyberg M. , Grandis S. , Gruen D. , Kleinebreil F. , Krippendorf S. , Lamer G. , Merloni A. , Migkas K. , Nandra K. , Pacaud F. , Predehl P. , Reiprich T. H. , Schrabback T. , Veronica A. , Weller J. , Zelmer S.
Published: May 2024

Clusters of galaxies can be used as powerful probes to study astrophysical processes on large scales, test theories of the growth of structure, and constrain cosmological models. The driving science goal of the SRG/eROSITA All-Sky Survey is to assemble a large sample of X-ray clusters with a well-defined selection function to determine the evolution of the mass function and, hence, the cosmological parameters. We present here a catalog of 12 247 optically confirmed galaxy groups and clusters detected in the 0.2–2.3 keV as extended X-ray sources in a 13 116 deg2 region in the western Galactic half of the sky, which eROSITA surveyed in its first six months of operation. The clusters in the sample span the redshift range 0.003 < z < 1.32. The majority (68%) of these clusters, 8361 sources, represent new discoveries without known counterparts in the literature. The mass range of the sample covers three orders of magnitude from 5 × 1012 Msun to 2 × 1015Msun. We construct a sample for cosmology with a higher purity level (~95%) than the primary sample, comprising 5259 securely detected and confirmed clusters in the 12791 deg2 common footprint of eRASS1 and the DESI Legacy Survey DR10. We characterize the X-ray properties of each cluster, including their flux, luminosity and temperature, the total mass, gas mass, gas mass fraction, and mass proxy YX. These are determined within two apertures, 300 kpc, and the overdensity radius R500, and are calculated by applying a forward modeling approach with a rigorous X-ray background treatment, K-factor, and the Galactic absorption corrections. Population studies utilizing log N-log S, the number of clusters detected above a given flux limit, and the luminosity function show overall agreement with the previous X-ray surveys after accounting for the survey completeness and purity through the selection function. The first eROSITA All-Sky Survey provides an unprecedented sample of galaxy groups and clusters selected in the X-ray band. The eRASS1 cluster catalog demonstrates the excellent performance of eROSITA for extended source detection, consistent with the pre-launch expectations for the final all-sky survey, eRASS:8.
Evaluation of milk yield of Three-breed (1/4 Caucasian grey x 1/4 Jersey x 1/2 Holstein) genotype cows under conditions of manger-pasture keeping
Authors: Giloyan G.H. , Kasumyan N.A. , Poghosyan G.A.
Published: May 2024

The F6 generation cows, which were made from “itself” breeding of three-breed cows (1/4 Caucasian Gray x 1/4 Jersey x 1/2 Holstein) (1/4 CG x 1/4 J x 1/2 H), the 305 days of first lactation exceed the Holstein breed to the standard by 175 kg or 4.2 %, milk fat content by 0.65 %, protein by 1 %, milk fat by 33.5 kg or 22.2 %. During pasture period from each cow was obtained 2540 kg of milk conforming to sanitary and hygienic standards. In the third calving, 170 days of pasture period and 195 days of manger keeping, the amount of milk in 305 days of lactation was 5337 kg, the amount of milk fat + milk protein was 407.7 kg, the reproductive ability was 100%. During manger period 0.77 FU (feed unit) or 0.90 EFU (energetic feed unit) and 80 g of digestible protein were spent to produce 1 kg of milk. The realization of pasture promotes to the increase generation, high vitality, proportionated exterior, strong limbs and a dense composition.
The influence of various feed additives on the development of duodenal goblet cells in broilers
Authors: Seryakova Alexandra , Cherepanova Nadezhda , Semak Anna , Belyaeva Nina , Prosekova Elena
Published: May 2024

A comparative study was carried out on the effect of three drugs on the development of goblet cells in the duodenum of broilers. In the first experiment, day-old broilers Smena-8 were divided into 4 groups. The experimental groups received the phytobiotic Butitan with the main diet: E1-0.25%; E2-0.5% and E3-0.75%. In the second experiment, 3 groups were formed from broilers of the Konkurent cross; additives were added for the first 3 days. The Vetom group received a probiotic based on Bacillus subtilis (0.006%); Enterosgel group – Polymethylsiloxane polyhydrate sorbent (0.008%). Histological studies were carried out in the first experiment at 1, 7 and 42 days, in the second at 1, 4, 49 days. Sections were stained to identify acidic and neutral mucus. The number of goblet cells in the field of view was counted and their density over an area of 1000 μm2 was calculated. By the end of the first experiment, the density of neutral goblet cells in the villi E1 and E2 and crypts E2 and E3 increases by 17% and 7.5%, acidic goblet cells increase in the crypts by 32.6% and 33.1%. The probiotic increased the density of acidic goblet cells in the crypts (64%; P≤0.001) without affecting the villi. Enetrosorbent reduces the density of neutral and increases the density of acidic goblet cells in the mucosa (37.3%). Due to the absence of a pathological picture in the structure of the duodenum, as well as the important role of mucus in the formation of chyme and digestion, we consider the increase in the density of goblet cells and the effect of feed additives as a positive reaction. The study of histological parameters to assess the effect of various feed additives on the body parameters of birds is important, since it shows the functional state of the organs.
Modernization of calf rearing technology elements in cattle breeding
Authors: Khatkova Maryat , Khatkov Kazbek , Golembovsky Vladimir , Khalimbekov Rustam , Ulimbashev Murat
Published: May 2024

The purpose of the research is to establish the timing of technological operations when feeding hay into feeders of different designs and the growth characteristics of calves with different growing technologies during the dairy period. On the 3rd day after birth, a control and experimental group of bull calves of the Simmental breed of 15 heads each were formed. Before reaching the age of 7 months, the calves of the control group were raised according to the technology adopted on the farm using manual milk feeding and hay consumption from a common feeder together with adult livestock. The eponymous peers of the experimental group were raised under nursing cows with full suction, rolled hay was fed to them in a coarse feed feeder designed for all age and gender groups of cattle, which was located in a common paddock with limited access to adult livestock (patent for invention RU 2810529 C1, 12/27/2023). The experimental groups of calves were provided with the same amount of coarse feed. The use of a new feeder ensured greater hay consumption than by individuals who consumed this feed from a feeder common to calves and adult animals with differences of 11.2 abs.%. Feeding hay from a common feeder meant filling it daily throughout the entire dairy period, which required 15 seconds of daily time, whereas according to the developed feeder – five times a day, the duration of each filling is on average 55 seconds, which indicates the obvious advantage of the new design. At the age of 7 months, the calves of the suckling group were superior in body weight (by 19.4 kg, P>0.999) to their peers of the traditional (economic) cultivation technology adopted in dairy cattle breeding, which were fed coarse feed from a common feeder. The differences in profitability obtained between the compared groups of calves amounted to 10.2 abs.% and turned out to be in favor of the experimental group individuals, which confirms the effectiveness of the implemented solutions in the practice of raising calves.
Lizunts for cows of the dry and transit period of the southern forest-steppe zone of the Republic of Bashkortostan with pasture maintenance
Authors: Ishmuratov Kh.G. , Mustafin I.G. , Shiriev V.M. , Khasanova R.F. , Garankov I.N.
Published: May 2024

The research was conducted in 2023 in the department of feed production and animal husbandry (laboratory of feed technology and feed additives) of the Ufa experimental station of the UFIC RAS on the topic: “Development of the formulation, technology of preparation of a feed additive and determination of its effectiveness in the diets of feeding farm animals.” Considering the natural and climatic conditions (soil composition, herbage with maturation phases, temperature regime, moisture content and chemical composition of pasture feed), 3 recipes of lizunts for this group of cows with a live weight of 600 kg with a planned milk yield of 6 thousand kg of milk have been developed. Based on the available components, their chemical composition and the corresponding structure, experimental versions of lizunts with a weight of 1 kg have been developed. A comprehensive assessment of the nutritional value of one of the lizunts variants was carried out according to many indicators. The prototype has been tested for licking with a small number of pregnant dry cows.
Comparative assessment of the daughters of servicing bulls of foreign breeding on dairy productivity
Authors: Gorelik O.V. , Razhina E.V. , Sharavyev P.V. , Rogozinnikova I.V. , Kaneva E.V. , Shamilov R.N.
Published: May 2024

Prolonged Holsteinization led to the absorption of the domestic dairy black-and-white Holstein breed. Currently, the widespread use of bulls of various Holstein breeds continues and the study of their effect on the productive qualities of daughters is relevant and has practical significance. It was found that the daughters of the Brandy bull were obtained by outbred selection, and the daughters of the Bourbon and Dancer bulls have an inbreeding level of 0.47-0.39, which allows them to be classified as a group with a moderate inbreeding degree. The daughters of all bulls showed high milk yields in 305 days of the first lactation. In terms of milk quality, they exceeded the standard requirements. The highest productivity indicators - milk yield for 305 days of lactation were found in cows - daughters of the Brandy bull - 9825.7±927.14 kg, which is 502.7 and 473.3 kg more, or 5.1 and 4.8%, respectively, for groups of daughters of other bulls. The evaluation of milk physical and chemical parameters confirmed the superiority in nutritional and biological value of the product obtained from the daughters of the Dancer bull. It had more dry matter and fat in milk, which led to an increase in nutritional value.
Clinical microbiota isolated from the uterine contents of sows in postpartum endometritis
Authors: Madiyev D.Zh.
Published: May 2024

Currently, diseases of the reproductive organs remain an urgent problem in pig breeding enterprises with intensive reproduction of livestock. Among them, the most common is postpartum endometritis. According to a number of researchers, the incidence of acute forms of endometritis in sows is 37.6-70.6%, while the prevalence of chronic forms is at the level of 21-27%. This type of pathology is the cause of morbidity and death of piglets from gastrointestinal diseases, and is also the cause of impaired reproductive function and infertility in sows, which leads to premature retirement from the herd. This type of pathology causes considerable harm in the development of the pig breeding sector and causes great economic damage. In pig breeding enterprises, the main therapeutic and preventive solution to this problem is the use of antibiotics and other chemotherapeutic preparations. Nevertheless, it is worth noting that their use is most often carried out uncontrollably and unreasonably, due to this, there is an increase in the number of resistant strains of bacteria, which poses a direct threat to animal and human health. The paper presents the results of the conducted studies, which made it possible to identify the types of bacteria involved in the etiology and pathogenesis of postpartum endometritis and the formation of the symptom complex of postpartum endometritis of sows. Based on the data obtained, it will be possible to further optimize the strategy of therapeutic measures to combat pathogenic microflora.
Prediction of Vitamin D and Serotonin levels with increased risk Depressive in Adolescent Students
Authors: Wajid Shifaa Kadim , Sharba Intisar Razzaq
Published: May 2024

Vitamin D deficiency (Vt.D) is common in adolescents and is influenced by some factors, including puberty. It impacted serotonin levels, thus increasing the risk of depression. This study was conducted to assess the association between vitamin D deficiency and depression and its effect on adolescent students. A cross-sectional study of 130 adolescent students aged 12-18 years, between November 2023 to February 2024. This study investigated serum Vt.D, serotonin levels, and hematological indices such as (RBC, Hb, MCV, and MCH, of adolescents, in addition, it was dependent on the Beck Depression Inventory to calculate scales of depression. 130 adolescent students were enrolled aged 12-18, mean ± SD: 14.85±2.19. The results indicated that 77(59.2%) students had depression symptoms, median (IQR) of scores16(13₋21.5), and 53(40.8%) adolescents with non-depressed (scores 5(2.5₋7), who were considered as the control group, a statistically significant between these groups (p=0.035). Depression was significantly more prevalent in females 46(59.7%) than males 31(40.3%), p=0.014. Deficiency Vt.D was found in 63.6% of the total depressive adolescents and was significantly more than nondepressive adolescents 3.8%, p<0.0001, with (B: 3.199, OR: 24.5, 95%CI: 5.96 -100.74). Serum Vt.D level was significantly decreased in depressive adolescent median (IQR) 18.8(13.1 ₋28.9) ng/ml, compared with non-depressed 52.22(42.2₋62.4), (p< 0.0001), and its lowest in a type of severe depression 10.74±3.52. The depressive adolescent group had significantly lower serotonin levels in deficiency Vt.D status than non-depressive groups (143.39±60.91 vs. 314.05±46.11), p = 0.001). Correlations and linear regression analysis to predict the risk factors for depression scores showed a significant negative correlation with levels of Vt.D (r=0.786, B: -0.109, 95%CI: -0.15 to -0.065, p<0.0001), and serotonin (r=0.848, B: 0.003, 95%CI: -0.032 to -0.019, p<0.0001), respectively. Deficiency Vt.D is an important risk factor for adolescents, especially in females, and is associated with an increased risk of depression in adolescent students
Obtaining microbial growth stimulants from medicinal plants
Authors: Molochaeva L.G.
Published: May 2024

This article investigates the use of medicinal plants as a source of microbial growth stimulants. The focus is on the study of different types of bioactive compounds present in medicinal plants such as alkaloids, terpenoids, flavonoids and phenolic acids and their effects on microorganisms. Methods of extraction of these compounds are discussed, including traditional and modern approaches such as supercritical fluid extraction, ultrasonic and microwave extraction. Various methods to improve the properties of these stimulants, including the use of nanotechnology and chemical modifications, to enhance their bioavailability and efficacy are also discussed. The study highlights the potential applications of these compounds in agriculture and pharmaceuticals, especially in probiotic development and soil health improvement.
A determination of rational parameters for drying plant extracts of wild and cultivated plants with antioxidant properties
Authors: Kharapaev M.N. , Tikhonov S.L. , Tikhonova N.V.
Published: May 2024

The article focuses on the drying of callus extracts of Ocimum basilicum and Eleutherococcus senticosus by pseudo-boiling bed method. During the study, rational conditions for the drying process were determined: temperature 90 ℃, aspiration 100 ± 0.8 m3/h and solution feed rate of 8 ± 0.3ml/min. It was possible to increase the antioxidant activity of the extract under the given conditions. The study of fluidized bed drying of the extract of callus cultures of basil (Ocimum basilicum) and Eleutherococcus senticosus (Eleutherococcus senticosus) allows to obtain extracts with higher concentration of biologically active substances. The results of the article can be useful for agro-, bio- and food industries.
Preparations based on bacteria from frozen rocks during the dressing of spring wheat seeds
Authors: Timofeev V.N. , Subbotin A.M.
Published: May 2024

The analysis of the effect of the applied biologies and chemical protectant in seed treatment carried out using paper rolls showed germination against the background of chemical dressing + bacteria – 85-96% at the control of 88%, against the background of pure bacteria 81-88% decrease by 2-10% from the background with chemical dressing. The root length was 11-13 cm, the root mass significantly exceeded the control on the variants of mixtures of chemical dressing and biopreparation. The length of the coleoptile significantly decreased by 1.6-2.6 cm according to the chemical dressing options, the sprout length varied between 9.6-12.0 cm, and a decrease in the sprout length was observed in most variants with a chemical protectant. Against the background of pure chemical protection (seed dressing), the protection efficiency was 100% during the tillering phase and 86% by the end of the growing season of the crop against root rot, mixed versions of the protectant with bacteria reduced faster the protection level. As a result, experimental data were obtained for testing mixtures of bacterial strains of R. Bacillus in the system of pre-sowing dressing of spring wheat seeds, with a positive effect on yield, strains of biological products were isolated (szr + 875 x 9-08; szr + 875 x Mm8; szr + 9-08 x Mm8).
The results of the use of mineral fertilizers and sideral crops in crop production. Biological activity of chernozem soils
Authors: Kloster N.I. , Azarov V.B. , Lotkova V.V.
Published: May 2024

This article presents the results of field research conducted on the territory of the Central Chernozem region of Russia. The factors of the experiment are mineral fertilizers containing macronutrients (NPK) and the cultivation of a sideral crop (white mustard). The indicators of the biological activity of the soil (typical chernozem) by the method of “decomposition of linen cloth” are considered. It has been established that the highest values of the studied indicator are achieved when sowing a sideral crop without the use of mineral fertilizers. In a soil layer of 0-20 cm, the best result was observed on a corn crop, where the biological activity in this variant is 41.3%. In a soil layer of 20-40 cm, with a similar combination of factors, the highest result was observed on a winter wheat crop (35.4%). The regularity of a decrease in the biological activity of the soil with an increase in the depth of sampling of the analyzed samples is noted.
The introduction of modern woodworking equipment into the logging process as a tool to improve environmental management
Authors: Zyryanov M.A. , Yakusheva M.O.
Published: May 2024

The paper substantiates the relevance of the rational use of wood resources by logging enterprises. The reasons preventing the use of logging waste as additional raw materials for wood processing enterprises have been identified. An assessment of the feasibility of production from logging waste in the form of branches, limbs and twigs of technological chips on mobile chopping machines is given. The necessity of raw material barking for the production of technological chips in the conditions of logging operations has been revealed. As a result, the purpose of the research was to increase the efficiency of using wood biomass by developing a design and introducing a mobile barking machine into the logging process. To achieve this goal, the main requirements for the technical capabilities of the barking machine were identified based on the geometric features of the processed raw materials and the places of its processing. To produce a laboratory prototype and implement a series of experiments, a set of design documentation was developed and a 3D model of the machine was built. A series of experimental studies has been carried out, consisting in the debarking of branches, limbs and branches of various wood species using a machine of the proposed design and a drum-type debarking machine. An analysis of the results of experimental studies has shown the effectiveness of the proposed machine design for drilling raw materials of small diameter and with a curved longitudinal axis. In the course of the research, methods of statistical analysis, analytical, modeling and active experiment were used. The results obtained can be used by logging and wood processing enterprises, as well as in the design of new types of barking equipment.
Improvement of current crowding effect in VCSEL arrays with non-uniform oxidation aperture design
Authors: Liu Yuanyuan , Jin Dongyue , Lei Xin , Zhou Yuxin , Zhang Wanrong , Xie Hongytm , Na Weicong , Dai Jlngfing , Wang Zhiyong
Published: May 2024

A compact electro-opto-thermal model of 2-D vertical cavity surface emitting laser (VCSEL) arrays considering the current crowding effect in each array cell is established to study the impact of oxidation aperture on the device performance. Simulated results shows that increasing oxidation aperture of array cell is helpful to improve the uniformity of current density distribution. With careful design of non-uniform oxidation aperture layout, both the uniformity of the temperature distribution and the current distribution is improved by 36.52% and 42.08%, respectively. Furthermore, 3×3 VCSEL arrays with uniform oxidation aperture (array-1) and non-uniform oxidation aperture (array-2) are fabricated and the L-I-V curves of two types of VCSEL arrays at different biases are also measured. The peak output optical power of array-2 is enhanced to 1.83mW with an improvement of 8.91% when compared with that of array-1. Moreover, the total optical output power of array-2 is always superior to that of array-1 over a wide bias current range.
Effects of painting therapy on psychological rehabilitation in children with autism spectrum disorder
Authors: Ma Shanshan , Cao Tiewa
Published: May 2024

Painting therapy plays an important role in the psychological rehabilitation of autistic children. Through an extensive review of the literature and relevant investigations, this research provides a comprehensive elucidation of the principles and characteristics underlying painting therapy. The findings suggest that painting therapy exhibits the potential to enhance self-expression, emotional communication, and communicative abilities while also contributing to advancements in social adaptation and emotional regulation among individuals with ASD. Utilizing this information is crucial for enhancing the caliber and efficacy of psychological intervention approaches tailored for children with autism, given the numerous challenges inherent in diagnosing and treating psychological issues in individuals with autism spectrum disorders. Nevertheless, this study acknowledges substantial limitations that necessitate further exploration and scrutiny in future research endeavors.
Research on project-based teaching model in the context of deep integration of industry and education
Authors: Wang Qun , Liu Mei
Published: May 2024

In the context of globalization and the knowledge economy, the quality of higher education is crucial for a country's competitiveness. This research focuses on the implementation pathway of project-based learning in the context of deep integration between industry and academia, aiming to explore its effectiveness. By conducting literature reviews, case studies, and empirical research, a model of project-based learning with deep industry-academia involvement is constructed and its feasibility is validated. The results indicate that this model significantly enhances students' practical skills, innovation capabilities, and teamwork skills, bridging the gap between education and practice. Furthermore, the deep collaboration between academia and industry optimizes the allocation and sharing of educational resources, cultivating engineering talents with international perspectives and innovative spirits. This research provides important insights for universities to implement project-based learning in the context of industry-academia integration, and holds theoretical and practical significance for advancing engineering education reform and improving the quality of talent cultivation.
The integration path and promotion of new business majors and ideological and political education in the era of great changes
Authors: Gu Cuihong , Wang Mengxia , Yue Yisheng
Published: May 2024

The world is experiencing unprecedented changes, and from historical experience, the era of great changes often means opportunities and challenges. To seize opportunities and better meet challenges, talent is indispensable. Ideological and political education is a very important component of achieving the goal of "cultivating morality and talents" in universities, and it is also a very important way to improve the quality of talent cultivation. Therefore, the article studies the necessity and integration path of ideological and political education in new business majors in the era of great changes, and proposes promotion strategies for the integration of new business majors and ideological and political education, in order to help them better achieve integration in the era of great changes.
The classroom teaching reform of “Computer Network” course of “three paragraphs and three levels, the combination of evaluation and questioning, and multiple assessment”
Authors: Fan Dongmei , Lu Zhang , Li Liu
Published: May 2024

The computer network course is a compulsory course for computer majors, which is offered in the second semester of the second year of college. Students' understanding of the network is in the simple application level, and they lack the thinking and ability to analyze and solve network problems from a professional perspective. This paper focuses on the research and practice of the traditional classroom of computer network, takes "theme" as the center to reconstruct the teaching content, adopts the "three paragraphs and three levels" online and offline mixed teaching mode, and solves the problems that the knowledge points in the traditional teaching are low correlation and students cannot apply what they have learned. It has some practical reference value for teachers to broaden teaching ideas and choose teaching methods in classroom teaching in the future.
Construction and practice of a blended teaching model based on MOOC+SPOC+Flipped classroom
Authors: Wang Mengxia
Published: May 2024

With the rapid development of Internet technology, MOOC has played a certain role in promoting the realization of education equity in China. In order to further improve the quality of teaching, educators are constantly exploring better teaching models. This article aims to optimize the blended learning model by constructing a blended learning model of MOOC+SPOC+flipped classroom in the course of database principles and applications. To enhance the influence of classroom teaching, stimulate and enhance students' interest in learning, and provide reference for the improvement and development of the current blended learning model. At the same time, the specific strategies and practical experience used in the design and practice of MOOC+SPOC+flipped classroom provide valuable references for other teaching practices.
Teaching innovation and practice of communication principles in the context of the 5G era
Authors: Yi Shuying
Published: May 2024

As a cutting-edge technology in the field of communication, 5G technology poses new challenges and opportunities to the teaching of communication principles courses. "Communication Principles", as the core course of these majors, must be constantly updated to adapt to the development of new communication technologies. This article takes the "Principles of Communication" course as an example, combines the characteristics of 5G technology and education, discusses the characteristics of the course and the current teaching situation, and proposes a series of teaching reform measures. These measures include structural adjustments to theoretical course content, using Matlab virtual simulation technology to strengthen experimental teaching, combining postgraduate entrance examination professional knowledge explanations, introducing after-school 5G practical training and professional certificate assessment, etc. Practice has proven that these teaching reforms can effectively improve the integration of theory and practice, enhance students' ability to analyze and solve problems, and better meet the training needs of applied talents.
Measurement and analysis of the total factor productivity of the three major industries in Tianjin
Authors: Xu Yemei , Zheng Feng , Song Lin , He Qiang
Published: May 2024

Based on relevant data on the primary, secondary, and tertiary industries in Tianjin from 2009‒2019, combined with the decomposition of the DEA-Malmquist index, the total factor productivity (TFP) of the three major industries in Tianjin in 2009‒2019 and its decomposition were calculated using DEAP2.1 software. Also, the TFP was comprehensively analyzed. The results showed that the TFP of Tianjin’s three major industries showed a downward trend in 2009‒2019, and the most important reason for this phenomenon was the decline in technological progress. When Tianjin develops its three major industries, it should focus on strengthening technological innovation and establishing strict and standardized management systems, rules, and regulations to promote a significant increase in TFP and the steady and high-quality development of its economy.
Research on the path of cultivating “three creativity” talents in e-commerce major under the background of new business studies
Authors: Liu Li
Published: May 2024

With the rapid development of internet technology, e-commerce has become an important component of modern business. In the context of the new business discipline, the cultivation of “three innovative” talents in e-commerce has become a key task required in today’s era. This article proposes three paths for cultivating “three innovative” talents. One is to cultivate students’ “three innovation” abilities through school enterprise cooperation projects. The second is to cultivate students’ “three creativity” abilities through subject competitions. The third is to cultivate students’ “three creativity” abilities through practical teaching reform. The above paths can effectively improve the quality of cultivating “three innovation” talents in the field of e-commerce.
Variations in Chlorella lipid content in commercial and in-lab produced biomass
Authors: Barouh Nathalie , Wind Juliette , Chuat Victoria , Gagnaire Valérie , Valence Florence , Bourlieu-Lacanal Claire , Subileau Maeva
Published: May 2024

Microalgae appear as a sustainable source of biomass with relevant nutritional qualities. Still, regulatory restrictions currently limit the use of eukaryotic microalgae for human consumption to a short list of species dominated by Chlorella spp. Chlorella biomass contains valuable proteins but also interesting lipids, including polyunsaturated fatty acids (PUFA) ω3 and ω6. The amount of PUFA and the ω6/ω3 ratio vary significantly depending on the species and cultivation trophic mode. While the lipid profils of in-lab produced Chlorella has been widely studied, the variability of lipid content in commercial biomasses is barely described. Here, lipid classes and fatty acid profiles of six commercial biomasses of Chlorella spp. as well as those of lab-produced C. sorokiniana grown in photo-autotrophy and in four mixotrophy conditions were characterized. Results showed significant lipid composition variations between the biomasses, such as the triacylglycerols/glycolipids and ω6/ω3 contents. The ω6/ω3 ratios were lower in photo-autotrophic mode (2.5) while they ranged between 1.3 and 8.9 in commercial biomasses. The free fatty acids level was also variable (1.4% to 17.9% of total lipids). As a consequence, Chlorella lipid content and quality differed significantly, impacting the potential nutritional benefits of the consumption of commercial biomass. Processing and post-processing conditions should therefore be carefully controlled to optimize lipid profiles.
Spectral properties of Sombor matrix of threshold graphs
Authors: Rather Bilal Ahmad , Imran Muhammad , Raza Zahid , Farooq Fozia Bashir
Published: May 2024

We investigate the Sombor spectral properties of threshold graphs, a formula for the Sombor index is presented, the Sombor eigenvalues are given, graphs with simple Sombor eigenvalues are characterized, bounds on the smallest/largest Sombor eigenvalues are presented, the multiplicities of the Sombor eigenvalues are discussed, formulae for trace and determinant of the associated quotient matrix are given, the Sombor spread bound and the bounds on the Sombor energy along with the characterization of extremal graphs. At the end, the conclusion states that all our results are valid for adjacency matrix and other adjacency type matrices.
Entlassen, aber wohin? Zur aktuellen Situation der „Langlieger“ in
deutschen psychiatrischen Kliniken
Authors: Jenderny Sarah , Claus Sylvia , Falkai Peter , Heinz Andreas , Meyer-Lindenberg Andreas , Pogarell Oliver , Wilms Bettina , Steinhart Ingmar
Published: May 2024

Ziel der Studie Die Studie analysiert Anzahl, Charakteristika und Gründe
für einen mehr als halbjährigen Aufenthalt von Patient*innen in deutschen
psychiatrischen Kliniken.

Methodik Die Studie wurde in Form einer bundesweiten Online-Umfrage
umgesetzt, die sich an Chefärzt*innen von Kliniken mit Versorgungsauftrag in der
Region richtete.

Ergebnisse In der Stichprobe wurden 174 Patient*innen in 80
psychiatrischen Kliniken identifiziert, die nicht entlassen werden können, weil
kein geeignetes Anschlussangebot in der Region zur Verfügung steht. Die
Patient*innen sind mehrheitlich männlich, weisen häufig eine F2-Diagnose auf und
zeigen aggressives Verhalten während des Klinikaufenthaltes.

Schlussfolgerung Für die Vermeidung von Fehlversorgung und langen
Liegezeiten einer Teilgruppe psychisch kranker Menschen sollten individuelle
Komplexleistungen in gemeinsamer Pflichtversorgung von Behandlung und
Eingliederungshilfe in der Gemeindepsychiatrie umgesetzt werden.
Treatment Approaches to Myasthenia Gravis and Obstructive Sleep Apnea: Case Report
Authors: Iafigliola Sergio Giamas , Guimarães Thais Moura , D'Almeida Vânia , Poyares Dalva , Dal-Fabbro Cibele , Tufik Sergio , Moreira Gustavo A.
Published: May 2024

Myasthenia gravis (MG) is a chronic autoimmune disease characterized by progressive weakness and skeletal muscle fatigue due to the destruction of acetylcholine receptors, causing an abnormality in the synaptic junction between innervation and muscle fibers. The treatment of patients with MG and obstructive sleep apnea (OSA) is positive pressure in the airway; however, the lack of adherence to the protocol can lead to increased morbidity. A known alternative treatment for OSA is the mandibular advancement device (MAD). The objective of the present report is to describe an emblematic case of a 50-year-old male patient with MG with sleep complaints and documented OSA, and his response to different treatment approaches.